List of Titles

Some aspects of the effect of temperature on the respiratory and cardiac activities of the Cichlid Teleost Tilapia mossambica

- Josman, V

Authors: Josman, V
Date: 1971
Subjects: Fishes -- Effect of temperature on , Cichlids
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5859 , http://hdl.handle.net/10962/d1012613
Description: The importance of the cichlid teleost Tilapia mossambica as a protein source, coupled with its remarkable adaptability, has resulted in its introduction into many water systems throughout the tropical, sub-tropical and even temperate regions of the world. However, its successful exploitation of these waters is dependent very largely upon the value of minimum temperatures and their duration. For e.g. Long et al (1961) has drawn attention to the tremendous mortalities of T. mossambica that occur in shallow water bodies during the precipitous temperature decreases that accompany the winter monsoons in Vietnam and other eastern countries, even at temperatures as high as 14 or 16º C. Coehe (1967) does not recommend stocking with T. mossambica where temperatures are not above 14º C all the time. Ailanson et al (1962) conclude, after an experimental study, that low temperatures (13º C or lower) in South African highveld dams in winter are certainly an important factor in the extensive mortalities of T. mossambica that have been reported from these dams. Jubb (1961) also reports that this species is often killed during a severe winter in Rhodesia. Intro., p.1.
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Date Issued: 1971

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Some aspects of the mission policy and practice of the Church of the Province of South Africa in Ovamboland, 1924-1960

- Mallory, Charles Shannon

Authors: Mallory, Charles Shannon
Date: 1971
Subjects: Church of the Province of Southern Africa -- Namibia -- Owambo
Language: English
Type: Thesis , Masters , MA
Identifier: vital:1232 , http://hdl.handle.net/10962/d1007312 , Church of the Province of Southern Africa -- Namibia -- Owambo
Description: This thesis is a study that was originally inspired by the question, "What does it mean to be a Christian in rural Africa today?" While the Church needs to ask this question everywhere in the world, from experience the writer believes it is especially germane to the non-Western cultures of Africa and Asia. That experience is drawn from eight years' work among the Kwanyama tribe of Ovambos in the Ovamboland Anglican Mission. Hence, this study is confined to one rural African tribe as it came under 46 years' influence of one Christian denomination.
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Date Issued: 1971

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The beginnings of urban segregation in South Africa : the Natives (Urban Areas) Act of 1923 and its background

- Davenport, T R H

Authors: Davenport, T R H
Date: 1971
Subjects: Apartheid South Africa. Natives (Urban Areas) Act, 1923 Apartheid -- South Africa
Language: English
Type: Book , Text
Identifier: http://hdl.handle.net/10962/2802 , vital:20327
Description: A bad influenza epidemic hit South Africa in 1918, and in the words of the Department of Native Affairs it afforded to the general public a startling revelation of the distressing conditions under which the Natives live in our urban centres and to what a great extent these conditions were a standing menace to the health of the whole population, European and native alike. It was an incentive to press ahead with the urban areas legislation, and in this task the Department now had the assistance of two new bodies, the statutory Native Affairs Commission set up under the Native Affairs Act of 1920, and the Transvaal Local Government Commission under Colonel C. F. Stallard. The Department announced a revised Bill in its Report for 1922. It contained most of the clauses of the 1918 Bill had a pronounced welfare focus, and aimed to give local authorities necessary powers to provide adequate housing and services, if necessary by borrowing money and recouping themselves through trading ventures in the locations. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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Date Issued: 1971

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The Birds' River dolerite complex

- Booth, P W K

Authors: Booth, P W K
Date: 1971
Subjects: Diabase , Diabase -- South Africa -- Cape of Good Hope -- Dordrecht. , Igneous rocks -- South Africa
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5043 , http://hdl.handle.net/10962/d1007664 , Diabase , Diabase -- South Africa -- Cape of Good Hope -- Dordrecht. , Igneous rocks -- South Africa
Description: A plug-like intrusion of Karroo dolerite, near Dordrecht in the Eastern Cape of the Republic, is described. Field mapping with the, aid of aerial photographs has revealed that the contact of the intrusion, for the most part, dips very steeply outwards. In the south- eastern and eastern areas, however, sheet- or sill-like forms appear to be given off from the main intrusion. In plan view the intrusion is roughly oval shaped, its longer axis being aligned in a north-westerly direction. Its surface area measures approximately 60 square kilometres (24 square miles). A large number of xenoliths composed exclusively of Stormberg sediments, pyroclastic rocks and minor lavas, are to be found cropping out within the dolerite intrusion. These xenoliths, many of which occur in positions far above or below their normal stratigraphic elevation, are extremely variable in size - the largest having an area of approximately 15 square kilometres (6 square miles). The xenoliths represent fragments of the original "roof" of sediments and pyroclastics which have collapsed into and been engulfed by the dolerite magma. This type of dolerite intrusion is known as a "belljar" intrusion. A superficial classification of the dolerites, based chiefly on textural and certain mineralogical features, is presented. In the area surrounding the main intrusion are a number of dolerite dikes and sheets. The youngest phase of igneous activity is represented by the Dragon's Back dike, which cuts across the complex in a north-westerly direction. Several veining phenomena, as well as an interesting variety of metamorphic and metasomatic rocks, are associated with the main dolerite intrusion. Six diatremes are situated in the vicinity of the intrusion. Pyroclastic rocks are represented by a variety of types, and are to be found outside the area of the intrusion, and as xenoliths within it. A tentative interpretation of the mechanism of formation of the intrusion, which appears to be related to volcanic activity and cauldron subsidence, is presented.
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Date Issued: 1971

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The contribution of F. D. Maurice to the nineteenth century discussion of the atonement in Britain

- Richardson, Robert Neville

Authors: Richardson, Robert Neville
Date: 1971
Subjects: Maurice, Frederick Denison, 1805-1872 Atonement -- History of doctrines -- 19th century Atonement -- Great Britain -- 19th century
Language: English
Type: Thesis , Bachelor , BDiv
Identifier: vital:1235 , http://hdl.handle.net/10962/d1007485
Description: From Introduction: Frederick Denison Maurice is generally remembered in connection with the rise of Christian Socialism. That his activities in this Movement were the most important aspect of his career is doubtful. ... Maurice's fundamental theological principles were: first, the idea of unity - unity in the Godhead, "Unity in Trinity", and unity among men in the human family; secondly, the Fatherhood of God - a Fatherhood which had at its heart the principle of sacrificial love. The events of Maurice's life proved to be fertile ground for the growth of these convictions. It was these convictions which shaped his whole understanding of the Atonement. Davies (3) points out that, in his teaching on the Atonement, Maurice turned away from the Western and Augustinian insistence that the basis of man's relationship to God was the Fall, and held, with the theolo Gians of the Eastern Church, that Christ's redemption of man is best understood as a restoration of man's relationship to God in Creation.
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Date Issued: 1971

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The contribution of F.D. Maurice to the Christian Socialist Movement of 1848-1954

- Steel, Ronald Luke

Authors: Steel, Ronald Luke
Date: 1971
Subjects: Maurice, Frederick Denison, 1805-1872 , Christian Socialist Movement
Language: English
Type: Thesis , Bachelor , BDiv
Identifier: vital:1275 , http://hdl.handle.net/10962/d1013270
Description: Maurice was a man who solicited both keen support and bitter opposition, both during his life time and after. It is only within the last twenty or thirty years that his true worth has begun to be recognised and appreciated. The aim of the thesis is to show that his contribution to the Christian Socialist Movement was an invaluable one. Chapter two describes the working-class conditions and their causes during the first half of the nineteenth century, as well as the role the Church played in social improvement. Chapter three deals with Chartism and the European Revolutions of 1848, and the effect of the Revolutions on Chartism. Chapter four gives an account of the man F.D. Maurice, as well as some of his thoughts and aims. Chapter five is a detailed account of Maurice's contribution to Christian Socialism, showing that he was not the 'practical' leader, and emphasising the importance of his theological beliefs in governing what to do. Intro. p. 1.
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Date Issued: 1971

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The effects of organic perturbants on the structure of soluble collagen

- Hart, Geoffrey Joseph

Authors: Hart, Geoffrey Joseph
Date: 1971
Subjects: Chemistry, Organic , Collagen
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:3846 , http://hdl.handle.net/10962/d1012157 , Chemistry, Organic , Collagen
Description: Organic solvents were used in the present study as a means of investigating the non-covalent interactions involved in the maintenance and pertubation of the three-dimensional structure of the collagen macromolecule in solution. The two main types of non-covalent interaction under consideration are hydrogen bond formation and hydrophobic effects. Elucidation of the relative importance of these factors in the maintenance of the solution structure of proteins is an area of intensive investigation and fundamental significance to biochemistry as a whole. During the past decade, considerable progress has been made towards a clearer understanding of the forces involved, and a number of different theoretical and experimental approaches have emerged. Until about 1960, hydrogen bonding was widely believed to be the dominant non-covalent interaction responsible for the maintenance of secondary and tertiary structure in many proteins. Subsequently, an increasingly important role for apolar (hydrophobic) effects was suggested by a number of authors, and at present there is no satisfactorily definitive interpretation of the available experimental evidence. The current work is based on a comparison of the effects of organic solvents on widely different substrates, namely collagen, cellulose, and the chromatographic reference material, catechin. The chromatographic mobility of catechin on cellulose may be regarded as a phenomenon which is mediated entirely by polar interaction mechanisms. The effects of various organic perturbants and of changing solvent/water ratios are readily interpreted on this basis. In the collagenous systems, however, certain results appear to require the introduction of concepts other than those relating exclusively to polar bonding affinities. The experimental evidence shows that there are cases where the enhancement of the polar interaction potential of solvent/water mixtures, in relation to catechin-cellulose systems, is accompanied by an apparent reduction of polar interaction potential of the same solvent/water mixtures with respect to soluble collagen. The anomaly outlined above will be discussed in terms of two fundamentally different theoretical assumptions. In the first of these, the mechanism of perturbant action in collagenous systems is regarded as essentially similar to that governing catechin-cellulose affinity patterns. Thus, interaction processes are all treated as polar phenomena, in which direct hydrophobic destabilization of the collagen triple helix plays no part. In an attempt to explain the effects of perturbants in both collagen and cellulose-containing systems in terms of the above assumption, two hypotheses are examined involving (1) direct polar interaction between perturbant molecules and functional groups of the protein; (2.) the possibility of an enhanced polar interaction potential of water molecules, due to lowering of the environmental dielectric constant when organic solvents are added to the systems. Within the other broad conceptual division, collagen and cellulose substrates are considered to respond in fundamentally different ways to the action of organic perturbants. As before, cellulose-catechin-solvent interactions are treated as entirely polar phenomena, and perturbant effects interpreted in terms of mechanisms such as direct solvation of the substrate, and the enhanced hydrogen bonding activity of water molecules. In contrast, perturbant lyotropic action with respect to soluble collagen i s viewed as the manifestation of a major contribution by hydrophobic interaction processes to macromolecular stability. Thus, solvents that competitively reduce the assumed entropic contribution to the stability of the collagen triple helix, are seen as potential destabilizers of the native state of the protein and inhibitors of the regeneration of co-operative structures during renaturation. Both of the above approaches are critically assessed in the light of the present work and the dominant trends apparent in the recent literature.
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Date Issued: 1971

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The mode of action of the acyl-diethylamide molluscicides

- Solomon, Keith Ross

Authors: Solomon, Keith Ross
Date: 1971
Subjects: Pesticides , Molluscicides
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5821 , http://hdl.handle.net/10962/d1007406
Description: From Introduction: That bilharziasis an important public health, social and economic problem in the tropical and subtropical countries of the world is well appreciated. (WHO, 1965) Bilharsiasis is the disease caused by parasitic worms of the genus Schistosoma having certain fresh water snails as the intermediate host. In South Africa the more important snails are Bulinus africanus and B. globosus, the secondary hosts of Schistosom haematobium. (WHO, 1965) One method of controling the disease is to reduce the numbers of the intermediate host snails to such a low level that transmission cannot occur (WHO, 1965 and Macdonald, 1965) This has led to a strong interest in those substances that kill snails. The first recorded use of a molluscicide, copper sulphate, was during the first world War in Egypt. (De Villiers, 1965) More recently, the more or less random testing of large numbers of compounds led to the discovery of a large number of molluscicides. These were the heavy metal compounds such as the salts of mercury and arsenic, the substituted phenols such as pentachlorophenol (PCP) and the 2-substituted 4:6-dinitrophenols. (De Villiers, 1965) These compounds are good molluscicides but suffer from a number of disadvantages. The use of copper compounds in hard waters is impractical as the copper precipitates out as the less effective carbonate. The heavy metal salts are expensive and biocidal thus making the treated water unsuitable for human or agricultural use. The phenolic compounds are unpleasant and dangerous to handle and the hydrolysis of PCP is catalysed by sunlight in clear waters. High concentrations of these compounds are required, thus increasing transport and handling costs, particularly in inaccessible areas.
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Date Issued: 1971

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The novels of André Malraux : a restatement of man's tragic dilemma in contemporary terms

- Greshoff, C J

Authors: Greshoff, C J
Date: 1971
Subjects: Malraux, André, 1901-1976 -- Criticism and interpretation
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:2299 , http://hdl.handle.net/10962/d1012092
Description: Writing about Eighteenth Century England, and more particularly about the age of Johnson, Trevelyan gives us an admirable definition of a classical age: It is a "classical age, that is an age of unchallenged assumptions, when the philosophers of the streets such as Dr. Johnson, have ample leisure to moralise on the human scene, in the happy belief that the state of society and the modes of thought to which they are accustomed are not mere passing aspects of an ever shifting kaleidoscope, but permanent habitations, the final outcome of reason and experience. Such an age does not aspire to progress, though it may in fact be progressing; it regards itself not as setting out but as having arrived." To apply this definition of a classical age to the protean Nineteenth Century might, at first glance, seem impossible or at least dangerous. Yet it is only when we see this century - and more particularly the period 1871-1914 - as a truly classical age, as the classical age of the Bourgeoisie, that we can understand the direction and meaning of the revolt during the Twenties and Thirties of which Malraux' work is so representative. Introduction, page 1.
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Date Issued: 1971

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The origins, growth and development of the Bantu Presbyterian Church of South Africa

- Van der Spuy, Daniel

Authors: Van der Spuy, Daniel
Date: 1971
Subjects: Bantu Presbyterian Church of South Africa -- History
Language: English
Type: Thesis , Bachelor , BDiv
Identifier: vital:1230 , http://hdl.handle.net/10962/d1007287
Description: From Preface: "The function of the historian is neither to love the past nor to emancipate himself from the past, but to master and understand it as the key to understanding the present." (E.H. Carr, What is history?, 1964 p.26.) The existence of an independent Bantu Presbyterian Church (B.P.C.) has raised many questions and problems which could only be probed by tracing its history. It is fascinating that even with the passing of so many years the issues at stake are still in the forefront. Perhaps in understanding the past one may better understand the present, but only one with acute vision will know the "right solution". The "Presbyterian mission" has been one of many in South Africa and has been present for over 150 years, yet I found little, as far as published work is concerned, which deals comprehensively with the various bodies comprising this mission. Nor is it clear, even in Presbyterian circles, what its history and policy has been, or meant, in the life of this country. Unfortunately, material is not always readily available, (which I found to my dismay), and both time and expense is involved in collecting such. I have consequently had to rely on scanty information as well as the dry-as-dust, uninformative blue books of the B.P.C.and P.C.S.A., which may indicate trends but very little by way of individual thought. With some spadework done by a few, it is an ardent hope that more will be done to uncover the past to knit the Presbyterian tradition together, that it may take its place amongst other histories, not in any partisan manner, but only to contribute to a healthy ecumenical climate where the worth of each tradition is acknowledged and used to increase the spirit of closer co-operation. The question of Presbyterian Union has long been present. My hope is that this thesis may clarify and encourage.
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Date Issued: 1971

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The parasite complex of the citrus psylla, trioza erytreae (Del Guercio) (Homoptera)

- McDaniel, J. R.

Authors: McDaniel, J. R.
Date: 1971
Subjects: Psylla -- Regulation , Citrus , Biological control systems , Parasites
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5865 , http://hdl.handle.net/10962/d1012866
Description: 1. Fifteen parasite species comprising the T. erytreae complex in Salisbury are listed. 2. Detailed, illustrated accounts are given of the biology of two primary parasites, Tetrastichus Pradiatus Waterston and Psyllaephagus pulvinatus (Waterston ), and their main hyperparasite, Aphidencyrtus cassatus Annecke. 3. The biology of the remaining twelve less important hyperparasites is briefly described and illustrated. 4. Keys are given to the adults, pupae and pupal remains of the parasites. 5 . The population fluctuations of T. erytreae and its parasites, as determined from field studies in the Salisbury area, are reported . 6. The interrelationships between T. erytreae and its parasites are summarised and discussed. Summary, p. 89.
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Date Issued: 1971

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The Wesleyan Methodist Church in the Transvaal, 1823-1902

- Veysie, Donald Clifford

Authors: Veysie, Donald Clifford
Date: 1971
Subjects: Methodist Church of Southern Africa Methodist Church of Southern Africa -- History Transvaal (South Africa) -- History -- To 1880 Transvaal (South Africa) -- History -- 1880-1910
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:1234 , http://hdl.handle.net/10962/d1007463
Description: From Preface: A preliminary survey of the history of the Wesleyan Methodist Church in the Transvaal revealed that the period of the early missions, before the formation of the Transvaal and Swaziland District, required research into the documents of other Districts for the purpose of writing a detailed history. It was therefore decided to confine research to the Documents of the Transvaal and Swaziland District and to write introductory chapters on the period of the early missions. The detailed research for this dissertation begins, therefore, with the creation of the Transvaal and Swaziland District in 1880. The natural point at which to finish appeared, at first, to be the beginning of the Second Transvaal War of Independence, but further research indicated that it would be more useful to conclude with the end of the war in 1902.
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Date Issued: 1971

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W.H. Auden: a study of his poetry and its critics, 1930-1960

- Millard, Geoffrey Charles

Authors: Millard, Geoffrey Charles
Date: 1971
Subjects: Auden, W. H., (Wystan Hugh), 1907-1973 -- Criticism and interpretation English poetry -- 20th century -- History and criticism
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:2284 , http://hdl.handle.net/10962/d1007629
Description: How does a poet fare nowadays at the hands of his critics? This study examines the critical reception Auden received from 1930 to 1960; through a close consideration of a selection of the poems written in this period it will be demonstrated that a considerble discrepency exists between Auden's poetic achievement and. the criticism it received. The main reason for this discrepancy is the lack of attention to individual poems in favour of sweeping surveys of a volume of poetry or the poet's total output. The core of the thesis lies here and the thesis as a whole derives from concern for a poet's reputation during his poetic career.
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Date Issued: 1971

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