Rhodeo, Vol. 20, No. 2
- Date: 1966-03-10
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14537 , http://hdl.handle.net/10962/d1019409
- Description: Rhodeo is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Rhodeo was established in 1947, and renamed in 1994 as Activate. During apartheid Rhodeo became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 1966-03-10
- Date: 1966-03-10
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14537 , http://hdl.handle.net/10962/d1019409
- Description: Rhodeo is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Rhodeo was established in 1947, and renamed in 1994 as Activate. During apartheid Rhodeo became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 1966-03-10
Rhodeo, Vol. 20, No. 1
- Date: 1966-01-20
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14536 , http://hdl.handle.net/10962/d1019408 , Rhodeo original print version held at Cory Library for Humanities Research, Rhodes University
- Description: Rhodeo is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Rhodeo was established in 1947, and renamed in 1994 as Activate. During apartheid Rhodeo became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 1966-01-20
- Date: 1966-01-20
- Subjects: Grahamstown -- Newspapers , Journalism, Students -- South Africa , Rhodes University -- Activate , Rhodes University -- Students , Student newspapers and periodicals -- South Africa
- Language: English
- Type: Text
- Identifier: vital:14536 , http://hdl.handle.net/10962/d1019408 , Rhodeo original print version held at Cory Library for Humanities Research, Rhodes University
- Description: Rhodeo is the Independent Student Newspaper of Rhodes University. Located in Grahamstown, Rhodeo was established in 1947, and renamed in 1994 as Activate. During apartheid Rhodeo became an active part of the struggle for freedom of expression as part of the now defunct South African Student Press Union. Currently Activate is committed to informing Rhodes University students, staff and community members about relevant issues, mainly on campus. These issues range from hard news to more creative journalism. While Activate acts as a news source, one of its main objectives it to be accessible as a training ground for student journalists. The newspaper is run entirely by the students and is published twice a term. Activate is a free newspaper which receives an annual grant from the Rhodes University Student Representative Council, however, majority of its revenue is generated through advertising.
- Full Text:
- Date Issued: 1966-01-20
A comparison of the female characters in Plautus and in Terence
- Authors: Slatter, E M
- Date: 1966
- Subjects: Plautus, Titus Maccius Terence Plautus, Titus Maccius -- Characters -- Women Terence -- Characters -- Women Latin drama Women in literature
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3602 , http://hdl.handle.net/10962/d1002186
- Full Text:
- Date Issued: 1966
- Authors: Slatter, E M
- Date: 1966
- Subjects: Plautus, Titus Maccius Terence Plautus, Titus Maccius -- Characters -- Women Terence -- Characters -- Women Latin drama Women in literature
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3602 , http://hdl.handle.net/10962/d1002186
- Full Text:
- Date Issued: 1966
A contribution to the respiratory physiology of three South African freshwater pulmonate snails, Bulinus (Physopsis) Africanus (Krauss), Bulinus (Bulinus) Tropicus (Krauss), and Lymnaea Natalensis Krauss
- Authors: Alberts, I E
- Date: 1966
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:20965 , http://hdl.handle.net/10962/5696
- Description: From Introduction: The use of chemical molluscicides in the control of schistosome transmitting snails has been largely based on empirical studies of toxicity, rather than on a clear understanding of basic physiology and biochemistry of snail hosts. It is therefore possible that purely physiological studies may in themselves provide information which could be of value in the development of more effective mollucicides. In this investigation an attempt has been made to understand some aspects of the respiratory physiology of three species of fresh-water pulmonate snails, all of which are of medical and veterinary importance in the Republic of South Africa. Bulinus (Physopsis) africanus (Krauss) is the intermediate host of Schistosoma haematobium, the causative organism of human schistosomiasis (Bilharziasis). Bulinus (Bulinus) tropicus (Krauss) is the intermediate host of the conical flukes Calicophoron calicophorum and Paramphistomum microbothrium and of the liver fluke Fasciola hepatica, while Lymnaea natalensis Krauss is the intermediate host of the liver fluke Fasciola gigantica.
- Full Text:
- Date Issued: 1966
- Authors: Alberts, I E
- Date: 1966
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:20965 , http://hdl.handle.net/10962/5696
- Description: From Introduction: The use of chemical molluscicides in the control of schistosome transmitting snails has been largely based on empirical studies of toxicity, rather than on a clear understanding of basic physiology and biochemistry of snail hosts. It is therefore possible that purely physiological studies may in themselves provide information which could be of value in the development of more effective mollucicides. In this investigation an attempt has been made to understand some aspects of the respiratory physiology of three species of fresh-water pulmonate snails, all of which are of medical and veterinary importance in the Republic of South Africa. Bulinus (Physopsis) africanus (Krauss) is the intermediate host of Schistosoma haematobium, the causative organism of human schistosomiasis (Bilharziasis). Bulinus (Bulinus) tropicus (Krauss) is the intermediate host of the conical flukes Calicophoron calicophorum and Paramphistomum microbothrium and of the liver fluke Fasciola hepatica, while Lymnaea natalensis Krauss is the intermediate host of the liver fluke Fasciola gigantica.
- Full Text:
- Date Issued: 1966
A study of irradiation effects in solids
- Authors: Brown, Michael Ewart
- Date: 1966
- Subjects: Decomposition (Chemistry) , Crystals -- Thermal properties , Oxalates -- Thermal properties , Solids -- Effect of radiation on
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4509 , http://hdl.handle.net/10962/d1013387
- Description: One of the primary objects of this research was to determine, if possible, the nature of the radiation damage prior to thermal decomposition. The X-ray study has not wholly achieved this although more information has been derived from it than from similar work on AgMnO₄ However, the diffuse reflections obtained do indicate, quite strongly, the creation of point defects during irradiation. This is of value since such assumptions have been made in the explanation of the kinetics of decomposition of a number of irradiated solids (BaN₆,CaN₆). In addition the X-ray work has suggested future research which should produce useful information; namely, a precise study of the diffuse reflections. Another object of the research was to attempt to determine what characteristics, if any, of the kinetics of the decomposition of an unirradiated solid would predetermine a marked irradiation effect. It is obvious that the type of nuclear growth which occurs e.g. branching chain, or power law, does not characterise a substance with regard to a possible irradiation effect . The photosensitivity, or otherwise, also does not determine whether there will be an irradiation effect. However, the one property that the substances which have been studied, have in common, is a polyatomic anion, but here again ammonium dichromate does not show an acceleration of the decomposition after irradiation. Consequently it is considered that it is not possible to say, a priori, whether a solid will undergo an accelerated decomposition after irradiation. Each new solid, unless it belongs to a particular class e.g. the alkaline earth azides , must be considered afresh. Nevertheless it does appear that the irradiation effect can take two forms: - (i) the production of an unstable compound e.g. nickel oxalate, the decomposition of which affects the normal pyrolysis; and (ii) the production of point defects which determine the nature of the subsequent thermal decomposition e.g . CaN₆ . It is possible that the effect requires an interaction of the created point defects with the existing line defects.
- Full Text:
- Date Issued: 1966
- Authors: Brown, Michael Ewart
- Date: 1966
- Subjects: Decomposition (Chemistry) , Crystals -- Thermal properties , Oxalates -- Thermal properties , Solids -- Effect of radiation on
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4509 , http://hdl.handle.net/10962/d1013387
- Description: One of the primary objects of this research was to determine, if possible, the nature of the radiation damage prior to thermal decomposition. The X-ray study has not wholly achieved this although more information has been derived from it than from similar work on AgMnO₄ However, the diffuse reflections obtained do indicate, quite strongly, the creation of point defects during irradiation. This is of value since such assumptions have been made in the explanation of the kinetics of decomposition of a number of irradiated solids (BaN₆,CaN₆). In addition the X-ray work has suggested future research which should produce useful information; namely, a precise study of the diffuse reflections. Another object of the research was to attempt to determine what characteristics, if any, of the kinetics of the decomposition of an unirradiated solid would predetermine a marked irradiation effect. It is obvious that the type of nuclear growth which occurs e.g. branching chain, or power law, does not characterise a substance with regard to a possible irradiation effect . The photosensitivity, or otherwise, also does not determine whether there will be an irradiation effect. However, the one property that the substances which have been studied, have in common, is a polyatomic anion, but here again ammonium dichromate does not show an acceleration of the decomposition after irradiation. Consequently it is considered that it is not possible to say, a priori, whether a solid will undergo an accelerated decomposition after irradiation. Each new solid, unless it belongs to a particular class e.g. the alkaline earth azides , must be considered afresh. Nevertheless it does appear that the irradiation effect can take two forms: - (i) the production of an unstable compound e.g. nickel oxalate, the decomposition of which affects the normal pyrolysis; and (ii) the production of point defects which determine the nature of the subsequent thermal decomposition e.g . CaN₆ . It is possible that the effect requires an interaction of the created point defects with the existing line defects.
- Full Text:
- Date Issued: 1966
An examination of the extractives of Leonotis species
- Authors: Kaplan, Errol R
- Date: 1966
- Subjects: Leonotis -- Analysis Botanical chemistry Chemistry, Analytic Chemistry, Organic
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4481 , http://hdl.handle.net/10962/d1012628
- Description: Marrubiin and the other two diterpenoids, compounds X and Y, which had previously been isolated from Leonotus leonurus have been reinvestigated. Although the structure for marrubiin is well known its stereochemistry has been the subject of protracted discussion and is by no means secure except at C₅ and C₁₀ . N.M.R. spectral evidence showed that the lactone ring was cis-fused and β-orientated. Dehydration experiments carried out by previous workers were repeated, in order to resolve the residual uncertainty regarding the stereochemistry at C₉, an attempt was made to prepare iodoacetyl marrubic acid for X-ray crystallographic studies. Compound Y, C₂₀H₂₈0₃, a triply-unsaturated compound was shown by spectral studies to contain a furan ring and an α,β- unsaturated keto-group. It possesses a hydroxyl group incapable of acetylation, but readily removed by alkali and dehydrating agents to yield a tetraunsaturated compound, anhydro~Y; the hydroxyl is thus tertiary, Isolation of 1:2:5-trimethylnaphthalene on dehydrogenation indicated a relationship with the labdane diterpene group and supported the C₂₀ formula, The position of the α,β-unsaturated keto-group was resolved by interpretation of the ultraviolet spectra of degradation products and also by isolation of 1:2:3:5- trimethylnaphthalene on dehydrogenation of a suitable grignard product, The presence of a β-substituted furan was further indicated by colour reactions and confirmed by mass and n.m.r. spectra. The skeleton of compound Y is correlated with marrubiin via "iso-ambreinolide " and its stereochemistry is discussed. Further stereochemical assignments are postulated from the study of the n.m.r. spectra. Compound X, C₂₀H₂₈0₅, was shown by spectral and chemical evidence to be a diterpenoid dilactone containing an ether bridge between C₉ and C₁₃ Isolation of 1:2:5 trimethylnaphthal ene on dehydrogenation showed it to be closely related to marrubiin, This was supported by n.m.r. spectral results. A structure for compound X is proposed and the stereochemistry discussed. The aerial portions of Leonotis leonitis were also extracted and shown to contain a new compound, compound R. Preliminary investigation showed that it was a dilactone containing a furan ring, The n.m.r. spectrum of the compound is discussed.
- Full Text:
- Date Issued: 1966
- Authors: Kaplan, Errol R
- Date: 1966
- Subjects: Leonotis -- Analysis Botanical chemistry Chemistry, Analytic Chemistry, Organic
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4481 , http://hdl.handle.net/10962/d1012628
- Description: Marrubiin and the other two diterpenoids, compounds X and Y, which had previously been isolated from Leonotus leonurus have been reinvestigated. Although the structure for marrubiin is well known its stereochemistry has been the subject of protracted discussion and is by no means secure except at C₅ and C₁₀ . N.M.R. spectral evidence showed that the lactone ring was cis-fused and β-orientated. Dehydration experiments carried out by previous workers were repeated, in order to resolve the residual uncertainty regarding the stereochemistry at C₉, an attempt was made to prepare iodoacetyl marrubic acid for X-ray crystallographic studies. Compound Y, C₂₀H₂₈0₃, a triply-unsaturated compound was shown by spectral studies to contain a furan ring and an α,β- unsaturated keto-group. It possesses a hydroxyl group incapable of acetylation, but readily removed by alkali and dehydrating agents to yield a tetraunsaturated compound, anhydro~Y; the hydroxyl is thus tertiary, Isolation of 1:2:5-trimethylnaphthalene on dehydrogenation indicated a relationship with the labdane diterpene group and supported the C₂₀ formula, The position of the α,β-unsaturated keto-group was resolved by interpretation of the ultraviolet spectra of degradation products and also by isolation of 1:2:3:5- trimethylnaphthalene on dehydrogenation of a suitable grignard product, The presence of a β-substituted furan was further indicated by colour reactions and confirmed by mass and n.m.r. spectra. The skeleton of compound Y is correlated with marrubiin via "iso-ambreinolide " and its stereochemistry is discussed. Further stereochemical assignments are postulated from the study of the n.m.r. spectra. Compound X, C₂₀H₂₈0₅, was shown by spectral and chemical evidence to be a diterpenoid dilactone containing an ether bridge between C₉ and C₁₃ Isolation of 1:2:5 trimethylnaphthal ene on dehydrogenation showed it to be closely related to marrubiin, This was supported by n.m.r. spectral results. A structure for compound X is proposed and the stereochemistry discussed. The aerial portions of Leonotis leonitis were also extracted and shown to contain a new compound, compound R. Preliminary investigation showed that it was a dilactone containing a furan ring, The n.m.r. spectrum of the compound is discussed.
- Full Text:
- Date Issued: 1966
An investigation into the importance of rhythmic and melodic variation for Brahm's development sections, with special reference to his four symphonies
- Authors: Schoeman, Delene Letitia
- Date: 1966
- Subjects: Brahms, Johannes, 1833-1897 -- Symphonies , Variations -- History and criticism
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:2690 , http://hdl.handle.net/10962/d1013170
- Description: "Variation is one of the oldest and most elemental types of music, beloved and practised by all musicians since the early lute and keyboard composers." The principle of the variation is that of "variety within unity, secured by the reproduction of limited musical material in changing aspects and is fundamental to composition." Typical instances are the use of fugal themes in changing combinations and with changing counter-material; continuous sequential expansion of a single motif in the baroque sonata or suite; the symphonic development in classical sonata form; ornamentation, compression, extension or elaboration of recapitulated sections. Intro., p. 1.
- Full Text:
- Date Issued: 1966
- Authors: Schoeman, Delene Letitia
- Date: 1966
- Subjects: Brahms, Johannes, 1833-1897 -- Symphonies , Variations -- History and criticism
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:2690 , http://hdl.handle.net/10962/d1013170
- Description: "Variation is one of the oldest and most elemental types of music, beloved and practised by all musicians since the early lute and keyboard composers." The principle of the variation is that of "variety within unity, secured by the reproduction of limited musical material in changing aspects and is fundamental to composition." Typical instances are the use of fugal themes in changing combinations and with changing counter-material; continuous sequential expansion of a single motif in the baroque sonata or suite; the symphonic development in classical sonata form; ornamentation, compression, extension or elaboration of recapitulated sections. Intro., p. 1.
- Full Text:
- Date Issued: 1966
An investigation of the judgement of a sample of South African adolescent schoolchildren in certain areas of moral behaviour
- Authors: Hayward, Fritz Reitz
- Date: 1966
- Subjects: Teenagers -- South Africa -- Attitudes , Youth -- South Africa -- Conduct of life , Multiculturalism -- Moral and ethical aspects , Moral education -- South Africa , Moral development -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1998 , http://hdl.handle.net/10962/d1015009
- Description: A. The Aims The modern adolescent is frequently accused of being morally lax; his judgement of moral issues is held in question; and parents, church and school are accused of having lost their influence on present-day youth. The writer wes lnterested in finding out whether these accusations could in fact be substantiated amongst a sample of adolescent school-children in a selected urban area. The aims of the research, therefore, were as follows :- (i) to investigate the judgement of these adolescents in certain given areas of moral behaviour, (ii) to determine whether there were any appreciable differences between the Afrikaans-speaking and English-speaking adolescents of the sample in their judgements of these moral issues, (iii) to determine whether there were any appreciable differences between adolescent boys and girls of the sample in their judgement of these moral issues, (iv) to explore the influences which caused the tested adolescents to re-act as they did.
- Full Text:
- Date Issued: 1966
- Authors: Hayward, Fritz Reitz
- Date: 1966
- Subjects: Teenagers -- South Africa -- Attitudes , Youth -- South Africa -- Conduct of life , Multiculturalism -- Moral and ethical aspects , Moral education -- South Africa , Moral development -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1998 , http://hdl.handle.net/10962/d1015009
- Description: A. The Aims The modern adolescent is frequently accused of being morally lax; his judgement of moral issues is held in question; and parents, church and school are accused of having lost their influence on present-day youth. The writer wes lnterested in finding out whether these accusations could in fact be substantiated amongst a sample of adolescent school-children in a selected urban area. The aims of the research, therefore, were as follows :- (i) to investigate the judgement of these adolescents in certain given areas of moral behaviour, (ii) to determine whether there were any appreciable differences between the Afrikaans-speaking and English-speaking adolescents of the sample in their judgements of these moral issues, (iii) to determine whether there were any appreciable differences between adolescent boys and girls of the sample in their judgement of these moral issues, (iv) to explore the influences which caused the tested adolescents to re-act as they did.
- Full Text:
- Date Issued: 1966
Aspects of reality as reflected by the human form in painting
- Authors: Fourie, F T
- Date: 1966
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:21174 , http://hdl.handle.net/10962/6739
- Full Text:
- Date Issued: 1966
- Authors: Fourie, F T
- Date: 1966
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:21174 , http://hdl.handle.net/10962/6739
- Full Text:
- Date Issued: 1966
Describing behaviour: a philosophical analysis
- Authors: Bunting, I A
- Date: 1966
- Subjects: Human behaviour -- Philosophy , Analysis (Philosophy)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2744 , http://hdl.handle.net/10962/d1009991 , Human behaviour -- Philosophy , Analysis (Philosophy)
- Description: Questions revolving around the possibility and justifiability of reductive analyses of the concept 'not', lie at the heart of many of the problems in the philosophical interpretation of not-descriptions. In this thesis, I wish to show, by discussing various problems in the logic of not-descriptions, that, and why, reductive analyses must be unsatisfactory.
- Full Text:
- Date Issued: 1966
- Authors: Bunting, I A
- Date: 1966
- Subjects: Human behaviour -- Philosophy , Analysis (Philosophy)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2744 , http://hdl.handle.net/10962/d1009991 , Human behaviour -- Philosophy , Analysis (Philosophy)
- Description: Questions revolving around the possibility and justifiability of reductive analyses of the concept 'not', lie at the heart of many of the problems in the philosophical interpretation of not-descriptions. In this thesis, I wish to show, by discussing various problems in the logic of not-descriptions, that, and why, reductive analyses must be unsatisfactory.
- Full Text:
- Date Issued: 1966
Electron precipitation and ionospheric disturbance
- Authors: Torr, Marsha R
- Date: 1966
- Subjects: Electrons , Electron precipitation , Ionosphere , Ionospheric electron density
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5509 , http://hdl.handle.net/10962/d1007691
- Description: From Introduction: The minimum in the scalar magnitude of the geographic total field, which lies off the coast of Brazil, allows the mirror points of trapped particles to dip low into the atmosphere over the South Atlantic Ocean, resulting in two regions of maximum intensity of preciptated particles in that region, one from the inner belt and one from the outer. High charged particle fluxes have been observed at low altitudes over these regions by satellites Sputnik 5 and 6 (Ginsburg et al, 1961) and Discoverer 31 (Seward and Kornblum, 1963) amongst others. The more southerly of these two regions acts as a sink for electrons from the outer radiation belt and will be referred to in what follows as the Southern Radiation Anomaly. Gladhill and van Rooyen (1963) predicted that the energy deposited in the upper atmosphere by these charged particles would be sufficient to give rise to enhanced geophysical effects such as auroral emission, X-rays and ionization and heating of the upper atmosphere in this region. Although some of these effects have been correlated with precipitated electrons, no definite relation had until now been established between ionospheric effects and precipitated particles. The aim of this thesis was to investigate such a relationship and the results were extremely successful. It will be shown conclusively in what follows, that the precipitation of electrons can account for the ionospheric disturbances defined by a disturbance criterion at all stations around L=4. Part I describes the exploration of the radiation belts and the magnetosphere with rockets and satellites. The resulting theoretical models based on the observations are discussed. A brief review is given of the work that has been done to date to derive equations for the loss and replenishment of particles in the belts. Because of the complexity of these and the number of doubtful factors involved, a simple model of injection of electrons into the outer belt is devised, giving average values of trapped and precipitated electron fluxes at any point around L=4. In Part II, this model is employed together with the disturbance criterion of Gledhill and Torr (1965) to examine the relationship between ionospheric disturbances and electron fluxes. Also the energy range of the precipitated particles is examined.
- Full Text:
- Date Issued: 1966
- Authors: Torr, Marsha R
- Date: 1966
- Subjects: Electrons , Electron precipitation , Ionosphere , Ionospheric electron density
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5509 , http://hdl.handle.net/10962/d1007691
- Description: From Introduction: The minimum in the scalar magnitude of the geographic total field, which lies off the coast of Brazil, allows the mirror points of trapped particles to dip low into the atmosphere over the South Atlantic Ocean, resulting in two regions of maximum intensity of preciptated particles in that region, one from the inner belt and one from the outer. High charged particle fluxes have been observed at low altitudes over these regions by satellites Sputnik 5 and 6 (Ginsburg et al, 1961) and Discoverer 31 (Seward and Kornblum, 1963) amongst others. The more southerly of these two regions acts as a sink for electrons from the outer radiation belt and will be referred to in what follows as the Southern Radiation Anomaly. Gladhill and van Rooyen (1963) predicted that the energy deposited in the upper atmosphere by these charged particles would be sufficient to give rise to enhanced geophysical effects such as auroral emission, X-rays and ionization and heating of the upper atmosphere in this region. Although some of these effects have been correlated with precipitated electrons, no definite relation had until now been established between ionospheric effects and precipitated particles. The aim of this thesis was to investigate such a relationship and the results were extremely successful. It will be shown conclusively in what follows, that the precipitation of electrons can account for the ionospheric disturbances defined by a disturbance criterion at all stations around L=4. Part I describes the exploration of the radiation belts and the magnetosphere with rockets and satellites. The resulting theoretical models based on the observations are discussed. A brief review is given of the work that has been done to date to derive equations for the loss and replenishment of particles in the belts. Because of the complexity of these and the number of doubtful factors involved, a simple model of injection of electrons into the outer belt is devised, giving average values of trapped and precipitated electron fluxes at any point around L=4. In Part II, this model is employed together with the disturbance criterion of Gledhill and Torr (1965) to examine the relationship between ionospheric disturbances and electron fluxes. Also the energy range of the precipitated particles is examined.
- Full Text:
- Date Issued: 1966
Genadendal and its satellites : a history of the Moravian Mission stations at the Cape, 1737-1869
- Authors: Krüger, Bernhard
- Date: 1966
- Subjects: Moravians -- Missions -- South Africa -- Genadendal , Missions -- South Africa -- History , Genadendal (South Africa) -- History , Cape of Good Hope (South Africa) -- History -- To 1795 , Cape of Good Hope (South Africa) -- History -- 1795-1872
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1284 , http://hdl.handle.net/10962/d1013470
- Description: J,F.w. Kühn, a member of the Moravian Mission Board, wrote in 1871 to the Superintendent at Genadendal that the closed settlements in South Africa were a precious and unique feature of mission work for which the brethren should be grateful. While he had been at the Gape, he had suffered under the difficulties of their management, but from the distance, and in comparison with mission work elsewhere, he had learnt to appreciate them as a great blessing. The questions arise: How dld they originate, develop and survive for so long? What were their characteristics, advantages and limitations? What factors contributed to their development? How did they fit into their milieu and influence it? The following thesis is an effort to give a detailed history of their development and an appraisal. I have endeavoured to give a vivid picture of personalities and events within the limits of historical correctness, because I consider it the noblest aim of historical research to confront us with the past in such a way that personal understanding becomes possible. In as much as we meet those who have made history. or have been part of it, in person, we can arrive at a deeper appreciation of their achievements, problems and failures.
- Full Text:
- Date Issued: 1966
- Authors: Krüger, Bernhard
- Date: 1966
- Subjects: Moravians -- Missions -- South Africa -- Genadendal , Missions -- South Africa -- History , Genadendal (South Africa) -- History , Cape of Good Hope (South Africa) -- History -- To 1795 , Cape of Good Hope (South Africa) -- History -- 1795-1872
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1284 , http://hdl.handle.net/10962/d1013470
- Description: J,F.w. Kühn, a member of the Moravian Mission Board, wrote in 1871 to the Superintendent at Genadendal that the closed settlements in South Africa were a precious and unique feature of mission work for which the brethren should be grateful. While he had been at the Gape, he had suffered under the difficulties of their management, but from the distance, and in comparison with mission work elsewhere, he had learnt to appreciate them as a great blessing. The questions arise: How dld they originate, develop and survive for so long? What were their characteristics, advantages and limitations? What factors contributed to their development? How did they fit into their milieu and influence it? The following thesis is an effort to give a detailed history of their development and an appraisal. I have endeavoured to give a vivid picture of personalities and events within the limits of historical correctness, because I consider it the noblest aim of historical research to confront us with the past in such a way that personal understanding becomes possible. In as much as we meet those who have made history. or have been part of it, in person, we can arrive at a deeper appreciation of their achievements, problems and failures.
- Full Text:
- Date Issued: 1966
Ionospheric effects in the Southern radiation anomaly
- Authors: Torr, Douglas G
- Date: 1966
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5540 , http://hdl.handle.net/10962/d1013305
- Description: From introduction: As ionosphericist on the 4th South African National Antarctic Expedition, I spent twelve months at Sanae (70°18'S, 2°2l'W, L= 4) in 1963. In the course of routine vertical incidence soundings, it was noticed with some surprise that the frequency of occurrence of ionospheric blackouts was unexpectedly high. Initially this aroused considerable concern about the reliability of the equipment. In fact it has been · observed that some stations lying in and near the Southern Radiation Anomaly report such occasions as records lost due to non-ionospheric reasons. Coincidently, however, Gledhill and van Rooyen (1963), also of Rhodes University, predicted ionospheric irregularities and other geophysical phenomena in a region around Sanae where Ginsburg et al. (1962) observed high intensities of charged particles with Sputniks 5 and 6.
- Full Text:
- Date Issued: 1966
- Authors: Torr, Douglas G
- Date: 1966
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5540 , http://hdl.handle.net/10962/d1013305
- Description: From introduction: As ionosphericist on the 4th South African National Antarctic Expedition, I spent twelve months at Sanae (70°18'S, 2°2l'W, L= 4) in 1963. In the course of routine vertical incidence soundings, it was noticed with some surprise that the frequency of occurrence of ionospheric blackouts was unexpectedly high. Initially this aroused considerable concern about the reliability of the equipment. In fact it has been · observed that some stations lying in and near the Southern Radiation Anomaly report such occasions as records lost due to non-ionospheric reasons. Coincidently, however, Gledhill and van Rooyen (1963), also of Rhodes University, predicted ionospheric irregularities and other geophysical phenomena in a region around Sanae where Ginsburg et al. (1962) observed high intensities of charged particles with Sputniks 5 and 6.
- Full Text:
- Date Issued: 1966
Proportional distribution of predominant rumen bacteria between the solid and the liquid portions of ruminal ingesta
- Authors: Brinkman, Paul A
- Date: 1966
- Subjects: Rumen -- Microbiology , Bacteria -- Rumen
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4100 , http://hdl.handle.net/10962/d1009715 , Rumen -- Microbiology , Bacteria -- Rumen
- Description: That certain bacteria in the rumen of sheep and cattle are attached to solid particles in the ruminal ingesta has been known for many years. In 1942 Baker published direct microscopical evidence that bacteria were attached to cellulose food particles and to starch granules in the rumen. The sites of attachment of these bacteria corresponded to sites of disintegration of the particles when viewed by polarised light. This indicated that at least bacteria attacking solid substrates such as cellulose and starch were attached to particles of ruminal ingesta. Van der Wath (1942) found rumen bacteria attached to particles of chemically pure cellulose and of crushed maize which he suspended in separate compartments of a pure silk bag inside the rumen of sheep. The bacteria associated with the particles of cellulose were mainly Gram negative rods , while clusters of iodophilic cocci were observed in most instances around the maize kernels . The latter organisms were isolated in pure culture and found to be heat-tolerant, short-chain, Gram positive cocci fermenting glucose, maltose, and other soluble sugars as well as starch. It was thus not surprising that many years later Schwartz et al (1964) obtained evidence which suggested that bacteria metabolising soluble substrates such as glucose also showed marked attachment to solid particles of ingesta.
- Full Text:
- Date Issued: 1966
- Authors: Brinkman, Paul A
- Date: 1966
- Subjects: Rumen -- Microbiology , Bacteria -- Rumen
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4100 , http://hdl.handle.net/10962/d1009715 , Rumen -- Microbiology , Bacteria -- Rumen
- Description: That certain bacteria in the rumen of sheep and cattle are attached to solid particles in the ruminal ingesta has been known for many years. In 1942 Baker published direct microscopical evidence that bacteria were attached to cellulose food particles and to starch granules in the rumen. The sites of attachment of these bacteria corresponded to sites of disintegration of the particles when viewed by polarised light. This indicated that at least bacteria attacking solid substrates such as cellulose and starch were attached to particles of ruminal ingesta. Van der Wath (1942) found rumen bacteria attached to particles of chemically pure cellulose and of crushed maize which he suspended in separate compartments of a pure silk bag inside the rumen of sheep. The bacteria associated with the particles of cellulose were mainly Gram negative rods , while clusters of iodophilic cocci were observed in most instances around the maize kernels . The latter organisms were isolated in pure culture and found to be heat-tolerant, short-chain, Gram positive cocci fermenting glucose, maltose, and other soluble sugars as well as starch. It was thus not surprising that many years later Schwartz et al (1964) obtained evidence which suggested that bacteria metabolising soluble substrates such as glucose also showed marked attachment to solid particles of ingesta.
- Full Text:
- Date Issued: 1966
Rhodes University Graduation Ceremony 1966
- Authors: Rhodes University
- Date: 1966
- Subjects: Busschau, William John
- Language: English
- Type: text
- Identifier: vital:8100 , http://hdl.handle.net/10962/d1004433
- Description: Rhodes University Graduation Ceremony on Saturday 2 April 1966 at 10:30 a.m. in the University Great Hall. , The order for the special graduation and the installation of William John Busschau as Chancellor of Rhodes University within the Great Hall on Friday 1 April 1966 at 5.30 p.m.
- Full Text:
- Date Issued: 1966
- Authors: Rhodes University
- Date: 1966
- Subjects: Busschau, William John
- Language: English
- Type: text
- Identifier: vital:8100 , http://hdl.handle.net/10962/d1004433
- Description: Rhodes University Graduation Ceremony on Saturday 2 April 1966 at 10:30 a.m. in the University Great Hall. , The order for the special graduation and the installation of William John Busschau as Chancellor of Rhodes University within the Great Hall on Friday 1 April 1966 at 5.30 p.m.
- Full Text:
- Date Issued: 1966
Shylock's origins and evolution : the image of the Jew in English literature from the middle ages to the mid-seventeenth century
- Authors: Durbach, Errol
- Date: 1966
- Subjects: Shakespeare, William, 1564-1616 -- Characters -- Shylock , Judaism and literature , English literature -- Early modern, 1500-1700 , English literature -- Middle English, 1100-1500
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2322 , http://hdl.handle.net/10962/d1014821
- Description: [From Preface]. Any study centred in the exploratlon and analysis of the medieval and Elizabethen images of the Jew might, with some justification. seem redundant and impertinent to a modern reader; for the third quarter of this century has witnessed the almost total obviatlon of a great many such time-honoured images and symbols. The immemorial figure of the Wandering Jew, to cite a sIngle instance, has for the past two decades, attained his country and place of destination - history no longer condemning him to tarry until the Second Coming of the Messiah. Even the deicide Jew has been granted complete absolution, by an offlcial decree from the Vatican, for his complicity in the killing of Christ. It would seem, moreover, that the atrocities perpetrated against the Jews during the course of the Second World War have resulted in an alteration of the Jewish image radically transforming It from one of contempt into one of compassion a living symbol of "man's inhumanlty to man"; and the modern European dramatist has revived the Jewlsh figure on the stage as an instance of almost personal atonement or, alternatively, as a means of scourging the state of middle-class mind which abetted the persecution of the Nazi regime, attacking state policies of inactio and deploring the failure of influentlal powers to resist the blatant inhumanlty perpetrated within Its boundaries. Max Frisch's Andorre and Rolf Hochhuth's The Representative embody, each in its own way the 2Oth century's sense of shame and horror at those events with which the century has yet to come to terms. They are both extreme reactions agalnst the image of the Jew whlch the Nazi propogandized in the 1930s. And the image which the Nazis propogandized was curiously consistent wlth the medieval and Elizabethan images of the Jew.
- Full Text:
- Date Issued: 1966
- Authors: Durbach, Errol
- Date: 1966
- Subjects: Shakespeare, William, 1564-1616 -- Characters -- Shylock , Judaism and literature , English literature -- Early modern, 1500-1700 , English literature -- Middle English, 1100-1500
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2322 , http://hdl.handle.net/10962/d1014821
- Description: [From Preface]. Any study centred in the exploratlon and analysis of the medieval and Elizabethen images of the Jew might, with some justification. seem redundant and impertinent to a modern reader; for the third quarter of this century has witnessed the almost total obviatlon of a great many such time-honoured images and symbols. The immemorial figure of the Wandering Jew, to cite a sIngle instance, has for the past two decades, attained his country and place of destination - history no longer condemning him to tarry until the Second Coming of the Messiah. Even the deicide Jew has been granted complete absolution, by an offlcial decree from the Vatican, for his complicity in the killing of Christ. It would seem, moreover, that the atrocities perpetrated against the Jews during the course of the Second World War have resulted in an alteration of the Jewish image radically transforming It from one of contempt into one of compassion a living symbol of "man's inhumanlty to man"; and the modern European dramatist has revived the Jewlsh figure on the stage as an instance of almost personal atonement or, alternatively, as a means of scourging the state of middle-class mind which abetted the persecution of the Nazi regime, attacking state policies of inactio and deploring the failure of influentlal powers to resist the blatant inhumanlty perpetrated within Its boundaries. Max Frisch's Andorre and Rolf Hochhuth's The Representative embody, each in its own way the 2Oth century's sense of shame and horror at those events with which the century has yet to come to terms. They are both extreme reactions agalnst the image of the Jew whlch the Nazi propogandized in the 1930s. And the image which the Nazis propogandized was curiously consistent wlth the medieval and Elizabethan images of the Jew.
- Full Text:
- Date Issued: 1966
Studies in Gusii kinship
- Authors: Mayer, Iona
- Date: 1966
- Subjects: Gusii (African people) -- Kinship
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2119 , http://hdl.handle.net/10962/d1012846
- Description: This thesis has two aims. In Part I the aim is to present some unpublished field material on Gusii kinship, particularly on domestic relations between the generations and the sexes. In Part II the aim is to clarify a theoretical model of 'relation by kinship', and of ' kinship categories" and 'classificntion', based on an examination of the ways in which Gusii use kinship terms. Intro., p. 1.
- Full Text:
- Date Issued: 1966
- Authors: Mayer, Iona
- Date: 1966
- Subjects: Gusii (African people) -- Kinship
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2119 , http://hdl.handle.net/10962/d1012846
- Description: This thesis has two aims. In Part I the aim is to present some unpublished field material on Gusii kinship, particularly on domestic relations between the generations and the sexes. In Part II the aim is to clarify a theoretical model of 'relation by kinship', and of ' kinship categories" and 'classificntion', based on an examination of the ways in which Gusii use kinship terms. Intro., p. 1.
- Full Text:
- Date Issued: 1966
The constituents of the resin of Euryops floribundus. N.E.Br.
- Authors: Woolard, Graham Robert
- Date: 1966
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4510 , http://hdl.handle.net/10962/d1013449
- Description: The aerial portions of the plant Euryops floribundus were extracted and shown to contain Euryopsonol and another sesquiterpenoid for which the name Euryopsol is proposed. An extraction of Euryops tenuissimus contained Euryopsol only. Euryopsonol, of empirical formula C₁₅ H₂₀ O₃, was previously shown to contain a hydroxyl group and a keto-group and to be doubly unsaturated. The hydroxyl group has been shown to be secondary, while the keto-group is ⋉, β, γ, δ-unsaturated, Spectroscopic and Mass spectrosmetric measurements showed euryopsonol to possess a furan ring and to be member of the eremophilane -9 of sesquiterpenoids . These proposals were confirmed by the conversion of euryopsonol to furanoeremophilone -9, thus establishing the stereochemistry at C₄, C₅ and C₁₀. This free hydroxyl group has been placed at C₃, but its stereochemistry is still unknown. Euryopsol, of empirical formula C₁₅ H₂₂ O₄, possesses an unstable furan ring and readily undergoes autoxidation, probably to a more stable ¥-lactone. It contains two vicinal hydroxyl groups, one of which was placed by Mass spectrometry at C₉. If euryopsol possesses the eremophilane skeleton the other hydroxyl group must be at C₁₀.
- Full Text:
- Date Issued: 1966
- Authors: Woolard, Graham Robert
- Date: 1966
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4510 , http://hdl.handle.net/10962/d1013449
- Description: The aerial portions of the plant Euryops floribundus were extracted and shown to contain Euryopsonol and another sesquiterpenoid for which the name Euryopsol is proposed. An extraction of Euryops tenuissimus contained Euryopsol only. Euryopsonol, of empirical formula C₁₅ H₂₀ O₃, was previously shown to contain a hydroxyl group and a keto-group and to be doubly unsaturated. The hydroxyl group has been shown to be secondary, while the keto-group is ⋉, β, γ, δ-unsaturated, Spectroscopic and Mass spectrosmetric measurements showed euryopsonol to possess a furan ring and to be member of the eremophilane -9 of sesquiterpenoids . These proposals were confirmed by the conversion of euryopsonol to furanoeremophilone -9, thus establishing the stereochemistry at C₄, C₅ and C₁₀. This free hydroxyl group has been placed at C₃, but its stereochemistry is still unknown. Euryopsol, of empirical formula C₁₅ H₂₂ O₄, possesses an unstable furan ring and readily undergoes autoxidation, probably to a more stable ¥-lactone. It contains two vicinal hydroxyl groups, one of which was placed by Mass spectrometry at C₉. If euryopsol possesses the eremophilane skeleton the other hydroxyl group must be at C₁₀.
- Full Text:
- Date Issued: 1966
The geology of the Vaal Reefs Gold Mine, Western Transvaal
- Authors: Jacob, Roger E
- Date: 1966
- Subjects: Vaal reefs gold mine , Gold ores -- Geology -- South Africa -- Transvaal. , Geology -- South Africa -- Transvaal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5078 , http://hdl.handle.net/10962/d1015171
- Description: Rocks forming part of the Main-Bird Series and the Kimberley-Elsburg Series of the Upper Division of the Witwatersrand System are found in the mine. The sequence studied starts with the Middle or MB 6 Zone of the Livingstone Stage followed by the Upper or MB 5 Zone. The Vaal Roof, forming the base of the Vaal Stage, rests disconformably on the older rocks. The Stage is subdivided into the Vaal Reef Zone, the Lower Vaal Zone, the Argillaceous Zone and the Upper Vaal Zone. The lower and upper contacts of the Argillaceous Zone are gradational. The Kimberley Stage follows unconformably and comprises the basal Gold Estates Conglomerate Zone, the Denny's Zone and the Gold Estates Zone. The overlying Elsburg Stage may be subdivided into the Bastard Zone and the Upper Elsburg Zone on lithological grounds. Most of the rocks are indurated quartz wackes with only a few orthoquartzite horizons such as the Denny's Zone and the immediate hangingwall of the Vaal Reef. Microscopically the rocks consist of detrital quartz and chert grains in a fine-grained sericitic to partly siliceous matrix which may constitute more than 50 per cent of the rock. Heavy minerals, such as zircon, chromite, rutile, leucoxone, pyrite, tourmaline, epidete, apetite and magnetite, occur in most of the zones. The Vaal Reef, the economic horizon, is of small-pebble, oligomictic conglomerate, often containing thucholite seams and granules, and varying in thickness from a mere parting to more than five feet. There appears to be a correlation between greater pebble size and higher ore grade but no correlation of sorting coefficients and gold value. The mineralogy of the Vaal Reef was studied by means of polished sections and heavy mineral concentrates. The minerals identified include gold, pyrite of several ages, pyrrhotite, chalcopyrite, uraninite, galena, brannerite, gersdorffite or cobaltite, skutterudite, linnacite, danaite, niccolite, pentlandite, magnotite, zircon, chromite, rutile, leucoxine, monazite, sphalerite, tourmaline, and fluorite. From a study of the silver content of gold in the Vaal Roof it is concluded that the variations in apparent fineness are a reflection of the composition of the gold in the original source rocks. There is a definite uranium-gold relationship in the Vaal Roof. With increase in grade the amount of U₃O₈ increases but the U₃O₈:AU ratio decreases. Use of these reations may indciate the payability in cases of incomplete core recovery.The intrusive rocks were studies in detail. Six types of intrusive rocks were found. From oldest to youngest those are quartz diabase (of three varieties), amygdaloidal diabase, ilmenite mela-microdiorite, mottled microdiorite, olivine lamprophyre and ankeritic beforsite, ranging in age from Lower Ventersdorp to post-Karroo. Most of the intrusives are highly altered due to the effects of regional metamorphism and deuteric alteration. Later formations, such as the Langgeleven and Allanridge Formations of the Ventersdorp System and the Black Roof and Dolomite Series of the Transvaal System, occur on the property. The various formations have been subjected to faulting and folding.
- Full Text:
- Date Issued: 1966
- Authors: Jacob, Roger E
- Date: 1966
- Subjects: Vaal reefs gold mine , Gold ores -- Geology -- South Africa -- Transvaal. , Geology -- South Africa -- Transvaal
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5078 , http://hdl.handle.net/10962/d1015171
- Description: Rocks forming part of the Main-Bird Series and the Kimberley-Elsburg Series of the Upper Division of the Witwatersrand System are found in the mine. The sequence studied starts with the Middle or MB 6 Zone of the Livingstone Stage followed by the Upper or MB 5 Zone. The Vaal Roof, forming the base of the Vaal Stage, rests disconformably on the older rocks. The Stage is subdivided into the Vaal Reef Zone, the Lower Vaal Zone, the Argillaceous Zone and the Upper Vaal Zone. The lower and upper contacts of the Argillaceous Zone are gradational. The Kimberley Stage follows unconformably and comprises the basal Gold Estates Conglomerate Zone, the Denny's Zone and the Gold Estates Zone. The overlying Elsburg Stage may be subdivided into the Bastard Zone and the Upper Elsburg Zone on lithological grounds. Most of the rocks are indurated quartz wackes with only a few orthoquartzite horizons such as the Denny's Zone and the immediate hangingwall of the Vaal Reef. Microscopically the rocks consist of detrital quartz and chert grains in a fine-grained sericitic to partly siliceous matrix which may constitute more than 50 per cent of the rock. Heavy minerals, such as zircon, chromite, rutile, leucoxone, pyrite, tourmaline, epidete, apetite and magnetite, occur in most of the zones. The Vaal Reef, the economic horizon, is of small-pebble, oligomictic conglomerate, often containing thucholite seams and granules, and varying in thickness from a mere parting to more than five feet. There appears to be a correlation between greater pebble size and higher ore grade but no correlation of sorting coefficients and gold value. The mineralogy of the Vaal Reef was studied by means of polished sections and heavy mineral concentrates. The minerals identified include gold, pyrite of several ages, pyrrhotite, chalcopyrite, uraninite, galena, brannerite, gersdorffite or cobaltite, skutterudite, linnacite, danaite, niccolite, pentlandite, magnotite, zircon, chromite, rutile, leucoxine, monazite, sphalerite, tourmaline, and fluorite. From a study of the silver content of gold in the Vaal Roof it is concluded that the variations in apparent fineness are a reflection of the composition of the gold in the original source rocks. There is a definite uranium-gold relationship in the Vaal Roof. With increase in grade the amount of U₃O₈ increases but the U₃O₈:AU ratio decreases. Use of these reations may indciate the payability in cases of incomplete core recovery.The intrusive rocks were studies in detail. Six types of intrusive rocks were found. From oldest to youngest those are quartz diabase (of three varieties), amygdaloidal diabase, ilmenite mela-microdiorite, mottled microdiorite, olivine lamprophyre and ankeritic beforsite, ranging in age from Lower Ventersdorp to post-Karroo. Most of the intrusives are highly altered due to the effects of regional metamorphism and deuteric alteration. Later formations, such as the Langgeleven and Allanridge Formations of the Ventersdorp System and the Black Roof and Dolomite Series of the Transvaal System, occur on the property. The various formations have been subjected to faulting and folding.
- Full Text:
- Date Issued: 1966
The imagery of night: the significance of night in artistic images and philosophies
- Authors: Matthews, Thomas
- Date: 1966
- Subjects: Night in art
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2455 , http://hdl.handle.net/10962/d1007616 , Night in art
- Description: Introduction: At first glance, darkness is merely the absence of light, and is therefore negative; hence the traditional equation of night with death, evil and the creatures of the underworld. But a closer study will reveal that darkness is also a positive force; examples can be cited from various cultures where darkness was thought to have given birth to light. The subterranean is the realm of fertility; the worshippers of Dionysius realised this, as did the followers of the world-wide cult of the Great Earth Mother. The realm of darkness is also the habitat of the mystic. In this essay, we will attempt to define the nature of nocturnal imagery, and to trace the various ways in which mankind has sought to reconcile himself with the powers of darkness.
- Full Text:
- Date Issued: 1966
- Authors: Matthews, Thomas
- Date: 1966
- Subjects: Night in art
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2455 , http://hdl.handle.net/10962/d1007616 , Night in art
- Description: Introduction: At first glance, darkness is merely the absence of light, and is therefore negative; hence the traditional equation of night with death, evil and the creatures of the underworld. But a closer study will reveal that darkness is also a positive force; examples can be cited from various cultures where darkness was thought to have given birth to light. The subterranean is the realm of fertility; the worshippers of Dionysius realised this, as did the followers of the world-wide cult of the Great Earth Mother. The realm of darkness is also the habitat of the mystic. In this essay, we will attempt to define the nature of nocturnal imagery, and to trace the various ways in which mankind has sought to reconcile himself with the powers of darkness.
- Full Text:
- Date Issued: 1966