A preliminary investigation of the determination of ionic mobilities by conductometric titration
- Authors: Festenstein, Gerald Norman
- Date: 1947
- Subjects: Ionic mobility , Conductometric analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4472 , http://hdl.handle.net/10962/d1011810 , Ionic mobility , Conductometric analysis
- Description: The determination of ionic mobilities by conductometric titration was first suggested by Barker, Rowler and Shuttleworth in discussing the theory of conductometric titration of acids, bases and neutral salts. Intro. p. 1.
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- Authors: Festenstein, Gerald Norman
- Date: 1947
- Subjects: Ionic mobility , Conductometric analysis
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4472 , http://hdl.handle.net/10962/d1011810 , Ionic mobility , Conductometric analysis
- Description: The determination of ionic mobilities by conductometric titration was first suggested by Barker, Rowler and Shuttleworth in discussing the theory of conductometric titration of acids, bases and neutral salts. Intro. p. 1.
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A report on the comparative performance of coloured and European factory workers on four tests of ability
- Authors: Gough, Margaret Frances
- Date: 1947
- Subjects: Cross-cultural psychology , Employees -- South Africa , Colored people (South Africa) -- Psychology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3246 , http://hdl.handle.net/10962/d1014980
- Description: This thesis is a report on the results or four psychological tests, applied to two groups or workers in Port Elizabeth factories; the one group consisting of European, the other of Coloured workers. The abilities selected for testing were believed to be necessary, to some extent, in certain Industrial operations.
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- Authors: Gough, Margaret Frances
- Date: 1947
- Subjects: Cross-cultural psychology , Employees -- South Africa , Colored people (South Africa) -- Psychology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3246 , http://hdl.handle.net/10962/d1014980
- Description: This thesis is a report on the results or four psychological tests, applied to two groups or workers in Port Elizabeth factories; the one group consisting of European, the other of Coloured workers. The abilities selected for testing were believed to be necessary, to some extent, in certain Industrial operations.
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A study of the comparative anatomy of the lateral compound eyes of arthropods
- Authors: Glaholm, J
- Date: 1947
- Subjects: Arthropoda -- Anatomy
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5908 , http://hdl.handle.net/10962/d1014966
- Description: In this thesis the interest has centered mainly on the comparative anatomy of the lateral eyes of Arthropods especially the compound eyes, with some particular reference to those of Chilopoda. The comparative anatomy of the eyes of Chilopoda seemed to be of interest, since they possess in most cases simple lateral eyes, which are not characteristic of the adults of any other group of Arthropoda, except Arachnids, to which the Chilopoda are only remotely related In a few cases - in the Scutigeridae - "compound" eyes are present, which are very unusual in their internal anatomy. The following possibilities with regard to the relationships of the Chilopod eyes present themselves. The simple eyes may be the products of degeneration of a compound eye. Alternatively they may be ocelli of a very primitive pre-compound eye type, persisting where in some cases a compound eye has failed to develop. As a third possibility they may have been separately evolved in forms, in which the compound eye was lost or failed to develop. In the last case they would appear to be unrelated to those of any other Arthropods, except possibly those of Diplopods, to which they are very similar in structure. The "compound" eyes may be or the same type as the compound eyes in the remaining Arthropods, with the differences due to degeneration, or to specialisation. Alternatively they may be of a separate type and formed secondarily, either as a single new structure. or a coalescence of ocelli. The enquiry into the interrelationship of these eyes and their relation to the eyes of other Arthropoda raises several points for investigation. For the compound eyes it is necessary to decide whether they were primarily present in the ancestors of some or all of the classes or Arthropods, and whether they have a common or more or less diverse origin with some evolutionary convergence. For the lateral simple eyes it is necessary to decide whether there are any indications in phylogeny, ontogeny or anatomy of the primitive or secondary formation of a compound eye by the aggregation of numerous ocelli or the elaboration of one or these. Such information might be expected to throw light on the origin of the Scutigerid eye. Alternatively any indications of the formation of simple from compound eyes might show whether the Chilopod simple eyes could have evolved in this way from a Scutigerid or some other compound eye. Median eyes are present in some Trilobites, Eurypterida, Crustacea, Hexapods and Arachnida. Although they exhibit considerable variations in structure, they are all clearly simple eyes. As they are absent in Chilopoda and in the remaining Arthropods are entirely separate in origin from the lateral eyes, with a separate seat of innervation, their comparative anatomy is of little interest in this case. The main portion of the thesis deals with the comparative anatomy, origins and relationships of the different types of compound lateral eyes. The second part comprises a short appendix dealing with similar aspects of the lateral ocelli. Detailed descriptions and figures have been given for the eyes of eight species. Some mention is also made of points observed in the internal or external anatomy of species which were studied in less detail. The theoretical conclusions are based on material from the available literature and from these descriptions.
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- Authors: Glaholm, J
- Date: 1947
- Subjects: Arthropoda -- Anatomy
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5908 , http://hdl.handle.net/10962/d1014966
- Description: In this thesis the interest has centered mainly on the comparative anatomy of the lateral eyes of Arthropods especially the compound eyes, with some particular reference to those of Chilopoda. The comparative anatomy of the eyes of Chilopoda seemed to be of interest, since they possess in most cases simple lateral eyes, which are not characteristic of the adults of any other group of Arthropoda, except Arachnids, to which the Chilopoda are only remotely related In a few cases - in the Scutigeridae - "compound" eyes are present, which are very unusual in their internal anatomy. The following possibilities with regard to the relationships of the Chilopod eyes present themselves. The simple eyes may be the products of degeneration of a compound eye. Alternatively they may be ocelli of a very primitive pre-compound eye type, persisting where in some cases a compound eye has failed to develop. As a third possibility they may have been separately evolved in forms, in which the compound eye was lost or failed to develop. In the last case they would appear to be unrelated to those of any other Arthropods, except possibly those of Diplopods, to which they are very similar in structure. The "compound" eyes may be or the same type as the compound eyes in the remaining Arthropods, with the differences due to degeneration, or to specialisation. Alternatively they may be of a separate type and formed secondarily, either as a single new structure. or a coalescence of ocelli. The enquiry into the interrelationship of these eyes and their relation to the eyes of other Arthropoda raises several points for investigation. For the compound eyes it is necessary to decide whether they were primarily present in the ancestors of some or all of the classes or Arthropods, and whether they have a common or more or less diverse origin with some evolutionary convergence. For the lateral simple eyes it is necessary to decide whether there are any indications in phylogeny, ontogeny or anatomy of the primitive or secondary formation of a compound eye by the aggregation of numerous ocelli or the elaboration of one or these. Such information might be expected to throw light on the origin of the Scutigerid eye. Alternatively any indications of the formation of simple from compound eyes might show whether the Chilopod simple eyes could have evolved in this way from a Scutigerid or some other compound eye. Median eyes are present in some Trilobites, Eurypterida, Crustacea, Hexapods and Arachnida. Although they exhibit considerable variations in structure, they are all clearly simple eyes. As they are absent in Chilopoda and in the remaining Arthropods are entirely separate in origin from the lateral eyes, with a separate seat of innervation, their comparative anatomy is of little interest in this case. The main portion of the thesis deals with the comparative anatomy, origins and relationships of the different types of compound lateral eyes. The second part comprises a short appendix dealing with similar aspects of the lateral ocelli. Detailed descriptions and figures have been given for the eyes of eight species. Some mention is also made of points observed in the internal or external anatomy of species which were studied in less detail. The theoretical conclusions are based on material from the available literature and from these descriptions.
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Methods and policies of the distribution of footwear in South Africa
- Authors: Lipschitz, Gustav
- Date: 1947
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:21160 , http://hdl.handle.net/10962/6639
- Description: This thesis is mainly based on information obtained by discussion with footwear manufacturers, wholesale merchants, retailers and many other business men who were thoroughly acquainted with merchandising methods and policies. Many thanks to all those who assisted. Government Blue Books, other published and unpublished Reports and Economic and Trade journals were consulted wherever possible.
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- Authors: Lipschitz, Gustav
- Date: 1947
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:21160 , http://hdl.handle.net/10962/6639
- Description: This thesis is mainly based on information obtained by discussion with footwear manufacturers, wholesale merchants, retailers and many other business men who were thoroughly acquainted with merchandising methods and policies. Many thanks to all those who assisted. Government Blue Books, other published and unpublished Reports and Economic and Trade journals were consulted wherever possible.
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Some elements of the arthropod fauna of the soil in South Africa
- Authors: Farquhar, M J
- Date: 1947
- Subjects: Uncatalogued
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/193691 , vital:45386
- Description: In a paper entitled "Bacteria of the Soil", Dr. Russell of Rothamsted is quoted as saying, ”The top six lashes might almost be called a separate world? 80 great is the number and variety of its inhabitants”• It is with a few forms belonging to this enormous biological complex that the author intends to deal, viz*, representatives of the Orders Pauropoda, Symphyla, Protura, Coleoptera and Hemiptera. Time does not permit the inclusion of a study of the multitude of Arthropod, species that occur in the soil, but a more complete work on these soil groups is intended in the future. McCullogh and Hayes (1922,p.288) state that the soil is an integral factor In the study of biological problems. Hence an understanding of the organic life of the soil, which is of great importance in relation to the other aspects of pedology, is a necessary adjunct to the study of the soil ae a whole. , Thesis (MSc) -- Faculty of Science, Botany, 1947
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- Authors: Farquhar, M J
- Date: 1947
- Subjects: Uncatalogued
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/193691 , vital:45386
- Description: In a paper entitled "Bacteria of the Soil", Dr. Russell of Rothamsted is quoted as saying, ”The top six lashes might almost be called a separate world? 80 great is the number and variety of its inhabitants”• It is with a few forms belonging to this enormous biological complex that the author intends to deal, viz*, representatives of the Orders Pauropoda, Symphyla, Protura, Coleoptera and Hemiptera. Time does not permit the inclusion of a study of the multitude of Arthropod, species that occur in the soil, but a more complete work on these soil groups is intended in the future. McCullogh and Hayes (1922,p.288) state that the soil is an integral factor In the study of biological problems. Hence an understanding of the organic life of the soil, which is of great importance in relation to the other aspects of pedology, is a necessary adjunct to the study of the soil ae a whole. , Thesis (MSc) -- Faculty of Science, Botany, 1947
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The high pressure catalytic hydrogenation of the tannin of black wattle (Acacia mollissima Willd)
- Authors: Silk, M H
- Date: 1947
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:21132 , http://hdl.handle.net/10962/6528
- Description: From Introduction: The wattle industry in South Africa has, from its commencement in the middle of the last century, gradually assumed a position of increasing importance in the economic structure of the country. Apart from the provision of a valuable tanning extract for home use and for export, the tree itself has proved of considerable importance to the Union’s mining industries. In addition there would appear to be possibilities for the utilisation in the near future, of the raw ground bark and the wattle extract for the manufacture of a number of by-products, including certain types of plastics.
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- Authors: Silk, M H
- Date: 1947
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:21132 , http://hdl.handle.net/10962/6528
- Description: From Introduction: The wattle industry in South Africa has, from its commencement in the middle of the last century, gradually assumed a position of increasing importance in the economic structure of the country. Apart from the provision of a valuable tanning extract for home use and for export, the tree itself has proved of considerable importance to the Union’s mining industries. In addition there would appear to be possibilities for the utilisation in the near future, of the raw ground bark and the wattle extract for the manufacture of a number of by-products, including certain types of plastics.
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The missionary work of the first Anglican Bishop of Natal, the Rt. Reverend John William Colenso, between the years 1852-1873
- Authors: Burnett, B B
- Date: 1947
- Subjects: Colenso, John William, 1814-1883
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2621 , http://hdl.handle.net/10962/d1014679
- Description: At the outset it had been my intention to make only the slightest of references to the Church Controversy in which Bishop Colenso was involved and to have touched only lightly on his theological position. Apart from anything else I hesitated to enter the arena in which so many had already collided violently and where my own prejudices might be enlisted on one side or the other. It became evident however that Colenso the Controversialist, the Theologian could not be dissociated from Colenso the missionary, without giving an inadequate, and even misleading history of his missionary activities. The Controversy had a serious and deleterious effect on his missionary work, and no estimate of the value of a missionary's labours would be valid without some consideration of his teaching, more especially when his orthodoxy is suspect. I have therefore dealt as briefly as I could with these questions in Chapter V because of their relevance, and because to produce a work on an ecclesiastic without some reference to his tenets would be like writing a biography of Louis Botha without any allusion to his political 'faith', or of Wellington, without any mention of Waterloo. it would represent a distortion of history to write about a Missionary Bishop as though he were an amateur politician, or of a missionary as though he were interested only in finance and administration.
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- Authors: Burnett, B B
- Date: 1947
- Subjects: Colenso, John William, 1814-1883
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2621 , http://hdl.handle.net/10962/d1014679
- Description: At the outset it had been my intention to make only the slightest of references to the Church Controversy in which Bishop Colenso was involved and to have touched only lightly on his theological position. Apart from anything else I hesitated to enter the arena in which so many had already collided violently and where my own prejudices might be enlisted on one side or the other. It became evident however that Colenso the Controversialist, the Theologian could not be dissociated from Colenso the missionary, without giving an inadequate, and even misleading history of his missionary activities. The Controversy had a serious and deleterious effect on his missionary work, and no estimate of the value of a missionary's labours would be valid without some consideration of his teaching, more especially when his orthodoxy is suspect. I have therefore dealt as briefly as I could with these questions in Chapter V because of their relevance, and because to produce a work on an ecclesiastic without some reference to his tenets would be like writing a biography of Louis Botha without any allusion to his political 'faith', or of Wellington, without any mention of Waterloo. it would represent a distortion of history to write about a Missionary Bishop as though he were an amateur politician, or of a missionary as though he were interested only in finance and administration.
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