Ngoma ya kare II
- Authors: Zhanke Masingi , Hugh Tracey
- Date: 1954
- Subjects: Folk music--Africa , Folk music--Zimbabwe , Folk songs, Ndau , Ndau (African people) , Field recordings , Africa, Sub-Saharan , Africa Zimbabwe Makulane f-rh
- Language: Ndau
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/181816 , vital:43771 , International Library of African Music, Rhodes University, Grahamstown, South Africa , TR176-14
- Description: The Mbira is not played from the dance itself, these two tunes being taken from the melodies used by the dancers. The tumbling dance of these Ndau people is very popular at the mines of Johannesburg. The tuning of the Mbira was:- 368, 328, 288, 252, 216, 202, 184 v.s. Dance tune for Mandowa tumbling dance with Mbira dza WaNdau
- Full Text: false
- Date Issued: 1954
- Authors: Zhanke Masingi , Hugh Tracey
- Date: 1954
- Subjects: Folk music--Africa , Folk music--Zimbabwe , Folk songs, Ndau , Ndau (African people) , Field recordings , Africa, Sub-Saharan , Africa Zimbabwe Makulane f-rh
- Language: Ndau
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/181816 , vital:43771 , International Library of African Music, Rhodes University, Grahamstown, South Africa , TR176-14
- Description: The Mbira is not played from the dance itself, these two tunes being taken from the melodies used by the dancers. The tumbling dance of these Ndau people is very popular at the mines of Johannesburg. The tuning of the Mbira was:- 368, 328, 288, 252, 216, 202, 184 v.s. Dance tune for Mandowa tumbling dance with Mbira dza WaNdau
- Full Text: false
- Date Issued: 1954
Oostelike Provinsie Toerspan, 1954
- Date: 1954
- Subjects: Rugby football -- South Africa -- Eastern Cape -- Photographs , Albany Rugby Football Club -- Photographs
- Type: still image
- Identifier: http://hdl.handle.net/10962/49373 , vital:25889 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/M 6751
- Description: Oostelike Provinsie Toerspan 1954, Photograph by the Volksblad, Bloemfontein, Team photograph with rugby/football players, in uniform, Group photograph, Black and white photograph, Indoor photograph, Players have arms crossed, some have their hands in their laps, while others have their hands behind their backs, Third row (3rde ry) all wearing suits, while three other men in second row (2de ry) also wearing suits, Rugby ball lying in front row, Agter (links na regs): K. Holton, W, Griffiths, D. Bouwer, D. Staples, R. Griesel, C. Kroon, C. van Straaten, L. Barnardt, 3rde ry (links na regs): J. Heyns, S. P. Ferreira, S. Fourie, L. B. Green, H. Melville, F. Ferreira, W. Davlin, 2de ry (links na regs): L. Raymond, C. Marx, A. du Plooy (Kaptein), L. Fourie (Bestuurder), T. Mills (Onder-Kaptein), H. Swart, D. Schonken, Voor (links na regs): S. Pearson, H, Burger, R. Wise, S. Visagie, Afwesig: F. Kingwell.
- Full Text: false
- Date Issued: 1954
- Date: 1954
- Subjects: Rugby football -- South Africa -- Eastern Cape -- Photographs , Albany Rugby Football Club -- Photographs
- Type: still image
- Identifier: http://hdl.handle.net/10962/49373 , vital:25889 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/M 6751
- Description: Oostelike Provinsie Toerspan 1954, Photograph by the Volksblad, Bloemfontein, Team photograph with rugby/football players, in uniform, Group photograph, Black and white photograph, Indoor photograph, Players have arms crossed, some have their hands in their laps, while others have their hands behind their backs, Third row (3rde ry) all wearing suits, while three other men in second row (2de ry) also wearing suits, Rugby ball lying in front row, Agter (links na regs): K. Holton, W, Griffiths, D. Bouwer, D. Staples, R. Griesel, C. Kroon, C. van Straaten, L. Barnardt, 3rde ry (links na regs): J. Heyns, S. P. Ferreira, S. Fourie, L. B. Green, H. Melville, F. Ferreira, W. Davlin, 2de ry (links na regs): L. Raymond, C. Marx, A. du Plooy (Kaptein), L. Fourie (Bestuurder), T. Mills (Onder-Kaptein), H. Swart, D. Schonken, Voor (links na regs): S. Pearson, H, Burger, R. Wise, S. Visagie, Afwesig: F. Kingwell.
- Full Text: false
- Date Issued: 1954
Palingkloof 3226AA
- Trigonometrical Survey (South Africa)
- Authors: Trigonometrical Survey (South Africa)
- Date: 1954
- Subjects: 1 : 50000 30.5595° S, 22.9375° E , Palingskloof (South Africa) Maps , Cradock (South Africa) Maps , South Africa History 1910-1961 Maps
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/114465 , vital:33987 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , MP1025
- Description: Palingkloof 3226AA. South Africa 1:50000 sheet. Air photography 1943. Field survey 1945. Drawn by the Trigonometric Survey in 1953. T.S.O. 200/1048. (Lugfotografie 1943. Veldopmeting 1945. Saamgestel en geteken in 1953 deur die Driehokesmatings Kantoor.) First edition
- Full Text: false
- Date Issued: 1954
- Authors: Trigonometrical Survey (South Africa)
- Date: 1954
- Subjects: 1 : 50000 30.5595° S, 22.9375° E , Palingskloof (South Africa) Maps , Cradock (South Africa) Maps , South Africa History 1910-1961 Maps
- Language: English
- Type: maps , digital maps , cartographic
- Identifier: http://hdl.handle.net/10962/114465 , vital:33987 , Cory Library for Humanities Research, Rhodes University Library, Grahamstown, South Africa , MP1025
- Description: Palingkloof 3226AA. South Africa 1:50000 sheet. Air photography 1943. Field survey 1945. Drawn by the Trigonometric Survey in 1953. T.S.O. 200/1048. (Lugfotografie 1943. Veldopmeting 1945. Saamgestel en geteken in 1953 deur die Driehokesmatings Kantoor.) First edition
- Full Text: false
- Date Issued: 1954
People in the dining hall at the 1954 Grahamstown Teachers' Training College reunion
- Date: 1954
- Subjects: Class reunions -- South Africa -- Grahamstown -- Photographs Grahamstown Teachers' Training College (South Africa) -- Photographs
- Type: Image
- Identifier: http://hdl.handle.net/10962/24385 , vital:23230 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/A 2897_050
- Description: Photograph of people in the dining hall at the 1954 Grahamstown Teachers' Training College reunion , Leila Kerr (Linington) (Donor)
- Full Text: false
- Date Issued: 1954
- Date: 1954
- Subjects: Class reunions -- South Africa -- Grahamstown -- Photographs Grahamstown Teachers' Training College (South Africa) -- Photographs
- Type: Image
- Identifier: http://hdl.handle.net/10962/24385 , vital:23230 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/A 2897_050
- Description: Photograph of people in the dining hall at the 1954 Grahamstown Teachers' Training College reunion , Leila Kerr (Linington) (Donor)
- Full Text: false
- Date Issued: 1954
Portrait of a man (2) : Esidadeni, All Saints, 1954
- Ingle, Pauline Cornwell, 1915-1999
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1954
- Subjects: Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12022 , http://hdl.handle.net/10353/d1000799 , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1954
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1954
- Subjects: Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12022 , http://hdl.handle.net/10353/d1000799 , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1954
Preparing melon for the cooking pot, 1954
- Ingle, Pauline Cornwell, 1915-1999
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1954
- Subjects: Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12034 , http://hdl.handle.net/10353/d1000811 , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1954
- Authors: Ingle, Pauline Cornwell, 1915-1999
- Date: 1954
- Subjects: Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Language: English
- Type: Still image
- Identifier: vital:12034 , http://hdl.handle.net/10353/d1000811 , Xhosa (African people) -- Social life and customs , Photography -- South Africa
- Full Text: false
- Date Issued: 1954
Rhodes University Graduation Ceremony 1954
- Authors: Rhodes University
- Date: 1954
- Language: English
- Type: text
- Identifier: vital:8088 , http://hdl.handle.net/10962/d1004398
- Description: Rhodes University Graduation Ceremony in the Grahamstown City Hall on Friday , 2nd April, 1954, at 8 p.m. [and] Graduation Ceremony held in April 1954: University College of Fort Hare. Graduation Ceremony. April 23rd, 1954. , Ceremony to commemorate the fiftieth anniversary of the Foundation of Rhodes University College and congregation for the conferment of honorary degrees, City Hall, Grahamstown, Friday, 24th September, 1954, at 11:15 a.m.
- Full Text:
- Date Issued: 1954
- Authors: Rhodes University
- Date: 1954
- Language: English
- Type: text
- Identifier: vital:8088 , http://hdl.handle.net/10962/d1004398
- Description: Rhodes University Graduation Ceremony in the Grahamstown City Hall on Friday , 2nd April, 1954, at 8 p.m. [and] Graduation Ceremony held in April 1954: University College of Fort Hare. Graduation Ceremony. April 23rd, 1954. , Ceremony to commemorate the fiftieth anniversary of the Foundation of Rhodes University College and congregation for the conferment of honorary degrees, City Hall, Grahamstown, Friday, 24th September, 1954, at 11:15 a.m.
- Full Text:
- Date Issued: 1954
Sala Salamanga lwe ritsongo = Goodbye little Salamanga
- Performer not specified, Composer not specified, Recordist not specified
- Authors: Performer not specified , Composer not specified , Recordist not specified
- Date: 1954
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Mozambique Marracuene mz
- Language: Language not specified
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/451926 , vital:75087 , International Library of African Music, Rhodes University, Makhanda, South Africa , Transcription Services, Rhodes University, Makhanda, South Africa , A10-03
- Description: Indigenous folk song with singing, clapping and drumming, accompanied by intermittent yodelling
- Full Text: false
- Date Issued: 1954
- Authors: Performer not specified , Composer not specified , Recordist not specified
- Date: 1954
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Mozambique Marracuene mz
- Language: Language not specified
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/451926 , vital:75087 , International Library of African Music, Rhodes University, Makhanda, South Africa , Transcription Services, Rhodes University, Makhanda, South Africa , A10-03
- Description: Indigenous folk song with singing, clapping and drumming, accompanied by intermittent yodelling
- Full Text: false
- Date Issued: 1954
Sala Salamanga lwe ritsongo = Goodbye little Salamanga
- Performer not specified, Composer not specified, Recordist not specified
- Authors: Performer not specified , Composer not specified , Recordist not specified
- Date: 1954
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Mozambique Marracuene mz
- Language: Language not specified
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/451917 , vital:75086 , International Library of African Music, Rhodes University, Makhanda, South Africa , Transcription Services, Rhodes University, Makhanda, South Africa , A10-02
- Description: Indigenous folk song with singing, clapping and drumming, accompanied by intermittent yodellingSala Salamanga lwe ritsongo
- Full Text: false
- Date Issued: 1954
- Authors: Performer not specified , Composer not specified , Recordist not specified
- Date: 1954
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Mozambique Marracuene mz
- Language: Language not specified
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/451917 , vital:75086 , International Library of African Music, Rhodes University, Makhanda, South Africa , Transcription Services, Rhodes University, Makhanda, South Africa , A10-02
- Description: Indigenous folk song with singing, clapping and drumming, accompanied by intermittent yodellingSala Salamanga lwe ritsongo
- Full Text: false
- Date Issued: 1954
Samuel Workman's 80th birthday
- Date: 1954
- Subjects: Workman family -- Photographs , Workman, Samuel, 1874-1957 -- Photographs
- Type: still image
- Identifier: http://hdl.handle.net/10962/49248 , vital:25876 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/M 7066
- Description: Samuel Workman on his 80th birthday.
- Full Text: false
- Date Issued: 1954
- Date: 1954
- Subjects: Workman family -- Photographs , Workman, Samuel, 1874-1957 -- Photographs
- Type: still image
- Identifier: http://hdl.handle.net/10962/49248 , vital:25876 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , PIC/M 7066
- Description: Samuel Workman on his 80th birthday.
- Full Text: false
- Date Issued: 1954
Shidlhiwani Shidlhiwani hulela = Fish, fish strung on the line
- Performer not specified, Composer not specified, Recordist not specified
- Authors: Performer not specified , Composer not specified , Recordist not specified
- Date: 1954
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Mozambique Marracuene mz
- Language: Language not specified
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/451935 , vital:75088 , International Library of African Music, Rhodes University, Makhanda, South Africa , Transcription Services, Rhodes University, Makhanda, South Africa , A10-04
- Description: Indigenous folk song with clapping, yodelling, singing and drumming, accompanied by intermittent horn
- Full Text: false
- Date Issued: 1954
- Authors: Performer not specified , Composer not specified , Recordist not specified
- Date: 1954
- Subjects: Folk music , Field recordings , Africa, Sub-Saharan , Africa Mozambique Marracuene mz
- Language: Language not specified
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/451935 , vital:75088 , International Library of African Music, Rhodes University, Makhanda, South Africa , Transcription Services, Rhodes University, Makhanda, South Africa , A10-04
- Description: Indigenous folk song with clapping, yodelling, singing and drumming, accompanied by intermittent horn
- Full Text: false
- Date Issued: 1954
Sister Truda and teaching staff, 1954
- Date: 1954
- Subjects: Grahamstown Training College -- Employees -- Photographs Grahamstown Training College -- History -- Photographs , Truda, Sister, C.R.
- Type: Image
- Identifier: http://hdl.handle.net/10962/10257 , vital:21576 , PIC/M 5116
- Description: This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017.
- Full Text: false
- Date Issued: 1954
- Date: 1954
- Subjects: Grahamstown Training College -- Employees -- Photographs Grahamstown Training College -- History -- Photographs , Truda, Sister, C.R.
- Type: Image
- Identifier: http://hdl.handle.net/10962/10257 , vital:21576 , PIC/M 5116
- Description: This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017.
- Full Text: false
- Date Issued: 1954
Some aspects of plant nutrition : inaugural lecture delivered at Rhodes University
- Authors: Twyman, Edgar S
- Date: 1954
- Language: English
- Type: Text
- Identifier: vital:675 , http://hdl.handle.net/10962/d1020744
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1954
- Authors: Twyman, Edgar S
- Date: 1954
- Language: English
- Type: Text
- Identifier: vital:675 , http://hdl.handle.net/10962/d1020744
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1954
Some aspects of the insect ecology of citrus orchards
- Authors: Smithers, Courtenay Neville
- Date: 1954
- Subjects: Citrus -- Diseases and pests , Insect pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5883 , http://hdl.handle.net/10962/d1013231
- Description: After a brief introduction, the species of Citrus on which the investigations were carried out are mentioned. This is followed by an account of the methods of collection used, and a discussion of their relative merits. The main method used was that in which the trees were fumigated with hydrocyanic acid gas, and the insects falling from the trees were taken up on sheets. The location of the areas where collections were made are then given. An annotated list of the species taken by the fumigation method follows, and the numerical data obtained at the same time regarding the species present is given in an abbreviated form and discussed. A more detailed discussion of the relative abundance of the species is then undertaken. The discussion of the ecology of the insects commences with the insects listed according to their activities, so far as known, and an account of five trees of striking faunal differences is given. A broader discussion of citrus ecology is then given, based on the data previously presented; this ends with a short reminder of the inherent 'oneness' of the insect with its environment.
- Full Text:
- Date Issued: 1954
- Authors: Smithers, Courtenay Neville
- Date: 1954
- Subjects: Citrus -- Diseases and pests , Insect pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5883 , http://hdl.handle.net/10962/d1013231
- Description: After a brief introduction, the species of Citrus on which the investigations were carried out are mentioned. This is followed by an account of the methods of collection used, and a discussion of their relative merits. The main method used was that in which the trees were fumigated with hydrocyanic acid gas, and the insects falling from the trees were taken up on sheets. The location of the areas where collections were made are then given. An annotated list of the species taken by the fumigation method follows, and the numerical data obtained at the same time regarding the species present is given in an abbreviated form and discussed. A more detailed discussion of the relative abundance of the species is then undertaken. The discussion of the ecology of the insects commences with the insects listed according to their activities, so far as known, and an account of five trees of striking faunal differences is given. A broader discussion of citrus ecology is then given, based on the data previously presented; this ends with a short reminder of the inherent 'oneness' of the insect with its environment.
- Full Text:
- Date Issued: 1954
Some measurements of the conductivities of dilute potassium chloride solutions
- Authors: Faure, Abraham
- Date: 1954
- Subjects: Potassium chloride
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4471 , http://hdl.handle.net/10962/d1011787
- Description: A constant temperature room has been constructed in which the thermoregulator is controlled by a temperature-sensitive resistance. A thermostat has been constructed in which the 0 temperature is controlled to within 0.001°C. A precision conductance bridge has been built in a very convenient form. Improvements include the replacement of the telephone as null detector by a cathode ray oscilloscope, and the use of a resistance-capacity phase-shift oscillator, which gives a good wave-form. An automatic recycling conductance water still has been built which regularly gives water with a conductivity less than 0.09 micromhos per cm. The conductivities of dilute KCl solutions have been measured, taking special care to prevent errors due to the adsorption of KCl on the surface of glass. Two cells were used for these measurements : a modified Jones cell, and a special conductimetric titration cell. The modified Jones cell has given results in good agreement with the generally-accepted values. The results of the conductimetric titration cell do not agree well with the generally-accepted values; the greatest difference (for the most dilute solution) is 0.4%. The reason for this is not known.
- Full Text:
- Date Issued: 1954
- Authors: Faure, Abraham
- Date: 1954
- Subjects: Potassium chloride
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4471 , http://hdl.handle.net/10962/d1011787
- Description: A constant temperature room has been constructed in which the thermoregulator is controlled by a temperature-sensitive resistance. A thermostat has been constructed in which the 0 temperature is controlled to within 0.001°C. A precision conductance bridge has been built in a very convenient form. Improvements include the replacement of the telephone as null detector by a cathode ray oscilloscope, and the use of a resistance-capacity phase-shift oscillator, which gives a good wave-form. An automatic recycling conductance water still has been built which regularly gives water with a conductivity less than 0.09 micromhos per cm. The conductivities of dilute KCl solutions have been measured, taking special care to prevent errors due to the adsorption of KCl on the surface of glass. Two cells were used for these measurements : a modified Jones cell, and a special conductimetric titration cell. The modified Jones cell has given results in good agreement with the generally-accepted values. The results of the conductimetric titration cell do not agree well with the generally-accepted values; the greatest difference (for the most dilute solution) is 0.4%. The reason for this is not known.
- Full Text:
- Date Issued: 1954
Studies in the comparative anatomy and systematic importance of the hexapod tentorium
- Authors: Hudson, Gerda Bland
- Date: 1954
- Subjects: Insects -- Anatomy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5858 , http://hdl.handle.net/10962/d1012457
- Description: During a study of the morphology of the orthopteroid Hexapoda between the years 1939-1941, it appeareded to the writer that further investigation into the structure of the insect tentorium was necessary. The early entomologists laid the foundation or our knowledge or the tentorium but during the latter half of the last century little was added in this particulart field. Comstock and Kochi (1902), as far as the writer is aware are the only workers who have published a paper devoted entirely to the skeleton of the bead of insects, and they did much to clarify both nomenclature and existing knowledge of this structure at that time. Berlese (1909) described a typical tentorlum as observed in orthopteroid Hexapoda and then considered the variations of the tentorium which occur in other groups of insects. Some confusion then appears to have arisen amongst workers, over the origin of the dorsal arms which were erroneously considered by some to be cuticular invaginations and not secondary outgrowths of the anterior tentorial arms. Certain morphologists amongst them, Hoke (1924) Denis (1928), Snodgrass (1928, 1935), Hansen (1930), Walker (1933) Imms (1934), and Symmons (1952), have done much towards improving our knowledge of the tentorium, but all too frequently workers offer brief and inadequate descriptions of this structure in otherwise comprehensive investigations of the insect head. Themain objects in this study are threefold, vlz. (1) The claification of nomenclature (2) The examination and the interpretation ot the tentorium in certain groups of insects. (3) The deliberation as to whether the tentorium is of phylogenetic significance, and thus of use in assessing various schemes of insect classification which have been presented. Introduction, p. 1-2.
- Full Text:
- Date Issued: 1954
- Authors: Hudson, Gerda Bland
- Date: 1954
- Subjects: Insects -- Anatomy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5858 , http://hdl.handle.net/10962/d1012457
- Description: During a study of the morphology of the orthopteroid Hexapoda between the years 1939-1941, it appeareded to the writer that further investigation into the structure of the insect tentorium was necessary. The early entomologists laid the foundation or our knowledge or the tentorium but during the latter half of the last century little was added in this particulart field. Comstock and Kochi (1902), as far as the writer is aware are the only workers who have published a paper devoted entirely to the skeleton of the bead of insects, and they did much to clarify both nomenclature and existing knowledge of this structure at that time. Berlese (1909) described a typical tentorlum as observed in orthopteroid Hexapoda and then considered the variations of the tentorium which occur in other groups of insects. Some confusion then appears to have arisen amongst workers, over the origin of the dorsal arms which were erroneously considered by some to be cuticular invaginations and not secondary outgrowths of the anterior tentorial arms. Certain morphologists amongst them, Hoke (1924) Denis (1928), Snodgrass (1928, 1935), Hansen (1930), Walker (1933) Imms (1934), and Symmons (1952), have done much towards improving our knowledge of the tentorium, but all too frequently workers offer brief and inadequate descriptions of this structure in otherwise comprehensive investigations of the insect head. Themain objects in this study are threefold, vlz. (1) The claification of nomenclature (2) The examination and the interpretation ot the tentorium in certain groups of insects. (3) The deliberation as to whether the tentorium is of phylogenetic significance, and thus of use in assessing various schemes of insect classification which have been presented. Introduction, p. 1-2.
- Full Text:
- Date Issued: 1954
Studies on the behaviour of Anomala opacicollis (Pér)
- Authors: Miles, Peter Wallace
- Date: 1954
- Subjects: Anomala -- Behavior -- Zimbabwe , Anomala -- Control -- Zimbabwe , Anomala -- Larvae -- Zimbabwe , Scarabaeidae -- Zimbabwe , Beetles -- Control -- Zimbabwe , Tobacco -- Diseases and pests -- Zimbabwe , Tobacco industry -- Zimbabwe , Insecticides -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5901 , http://hdl.handle.net/10962/d1013514
- Description: [Summary]: The larvae of Anomala opacicollis (Pér), of Melolonthid and of other Rutelid species, attack tobacco in Southern Rhodesia, and are more commonly called "whitegrubs". Whitegrubs are widespread in the sandveld areas where tobacco is grown and, at the Trelawney Station of the Tobacco Research Board of Southern Rhodesia, where this work was done, A. opacicollis was the predominant species. An account o£ the one year life cycle is given. The adults eat the leaves of various indigenous trees and an account of an experiment on the food preferences of A. opacicollis adults is given, and the main food sources in the Trelawney area are listed. An experiment is described which shows that the beetles prefer to lay their eggs in the veld or in manured broken land rather than in normal ploughed lands. The larvae are erratically distributed in lands and experiments on larval movement suggest that this is mainly due to concentration of the larvae at discrete concentrations of organic matter in the soil. The temperature and moisture condition of the top 3" of soil are found to be those which attact the larvae. It is suggested that tho larvae prefer and move to soil which contains the lowest amount of moisture which keeps the soil air spaces saturated. lt appears that the preferred temperature decreases with increasing soil moisture content and it is suggested that this is due to the respiratory requirements of the larvae. Soil pH, compaction and fertiliser content and the presence of plants do not appear to influence larval movements. A theory is developed concerning the mechanism of movements in the soil and it is suggested that, in the absence of a continuous gradient, the speed but not the direction of movement is influenced by conditions to which the larvae are sensitive. Evidence in support of thie theory is given. Studies on the survival of larvae at different soil moisture contents and temperatures show that conditions in the top 3" of soil are not likely to be lethal in spite of the high temperatures and low moisture contents found there. The relation of whitegrub behaviour to agricultural problems is discussed. Other workers published evidence indicating that early ploughed lands were attractive to whitegrubs; this is shown not to be the case and the previous evidence is re-interpreted. Such lands tend to contain concentrations of whitegrubs round the borders. The reason for this is discussed and it is suggested that lands should be ploughed early to confine whitegrub infestations in this manner. Soils low in fertility through repeated cultivation are commonly believed to contain more whitegrubs than virgin soil. However, behaviour studies suggest that it is the activity and not the size of the population which is affected by soil fertility. The time at which tobacco is planted is known to determine the extent of subsequent whitegrub damage. The reason for this is to be found in the life cycle of whitegrubs and the results of an experiment on time of planting in relation to whitegrub damage are given. Some insecticides are shown to be more repellant than others to A. opacicollis larvae and the influence of this fact on the assessment of soil insecticide effectiveness in the field is discussed. Reference is made to a method developed by the writer for the determination of insecticide effectiveness under the conditions of erratic whitegrub distribution which normally occur.
- Full Text:
- Date Issued: 1954
- Authors: Miles, Peter Wallace
- Date: 1954
- Subjects: Anomala -- Behavior -- Zimbabwe , Anomala -- Control -- Zimbabwe , Anomala -- Larvae -- Zimbabwe , Scarabaeidae -- Zimbabwe , Beetles -- Control -- Zimbabwe , Tobacco -- Diseases and pests -- Zimbabwe , Tobacco industry -- Zimbabwe , Insecticides -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5901 , http://hdl.handle.net/10962/d1013514
- Description: [Summary]: The larvae of Anomala opacicollis (Pér), of Melolonthid and of other Rutelid species, attack tobacco in Southern Rhodesia, and are more commonly called "whitegrubs". Whitegrubs are widespread in the sandveld areas where tobacco is grown and, at the Trelawney Station of the Tobacco Research Board of Southern Rhodesia, where this work was done, A. opacicollis was the predominant species. An account o£ the one year life cycle is given. The adults eat the leaves of various indigenous trees and an account of an experiment on the food preferences of A. opacicollis adults is given, and the main food sources in the Trelawney area are listed. An experiment is described which shows that the beetles prefer to lay their eggs in the veld or in manured broken land rather than in normal ploughed lands. The larvae are erratically distributed in lands and experiments on larval movement suggest that this is mainly due to concentration of the larvae at discrete concentrations of organic matter in the soil. The temperature and moisture condition of the top 3" of soil are found to be those which attact the larvae. It is suggested that tho larvae prefer and move to soil which contains the lowest amount of moisture which keeps the soil air spaces saturated. lt appears that the preferred temperature decreases with increasing soil moisture content and it is suggested that this is due to the respiratory requirements of the larvae. Soil pH, compaction and fertiliser content and the presence of plants do not appear to influence larval movements. A theory is developed concerning the mechanism of movements in the soil and it is suggested that, in the absence of a continuous gradient, the speed but not the direction of movement is influenced by conditions to which the larvae are sensitive. Evidence in support of thie theory is given. Studies on the survival of larvae at different soil moisture contents and temperatures show that conditions in the top 3" of soil are not likely to be lethal in spite of the high temperatures and low moisture contents found there. The relation of whitegrub behaviour to agricultural problems is discussed. Other workers published evidence indicating that early ploughed lands were attractive to whitegrubs; this is shown not to be the case and the previous evidence is re-interpreted. Such lands tend to contain concentrations of whitegrubs round the borders. The reason for this is discussed and it is suggested that lands should be ploughed early to confine whitegrub infestations in this manner. Soils low in fertility through repeated cultivation are commonly believed to contain more whitegrubs than virgin soil. However, behaviour studies suggest that it is the activity and not the size of the population which is affected by soil fertility. The time at which tobacco is planted is known to determine the extent of subsequent whitegrub damage. The reason for this is to be found in the life cycle of whitegrubs and the results of an experiment on time of planting in relation to whitegrub damage are given. Some insecticides are shown to be more repellant than others to A. opacicollis larvae and the influence of this fact on the assessment of soil insecticide effectiveness in the field is discussed. Reference is made to a method developed by the writer for the determination of insecticide effectiveness under the conditions of erratic whitegrub distribution which normally occur.
- Full Text:
- Date Issued: 1954
The chemistry of naturally occurring long chain unsaturated compounds
- Authors: Silk, M H
- Date: 1954
- Subjects: Compounds, Unsaturated
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4518 , http://hdl.handle.net/10962/d1014332
- Description: [From Introduction, p. 3] Raw marine oils are subject to considerable variation in composition with season and are moreover very unbalanced oils for direct use in the paint industry. Further refining is undertaken chiefly by Messrs Marine Oil Refiners of Africa Ltd., whose factory is situated at Simonstown. In their plant marine oils and others are treated by the Solexol process involving counter current extraction of the oil with liquid propane in a tower over which a temperature gradient is maintained. The process achieves the removal of a large proportion of the relatively saturated glycerides, the natural antitioxidants, and the relatively highly unsaturated components, all of which are detrimental to the eventual formation of good paint films. The segregated marine oil from the Solexol process is then bodied or polymerised at high temperatures to yield a "drying oil" which is used as a substitute for bodied linseed oil in paints. The chemical reactions taking place during the polymerisation and drying of these oils are of an exemely complex nature, and for their understanding it is necessary to have an accurate knowledge of the chemical nature of the component fatty acids in the natural glycerides ... The term "marine oils" in this work should be understood to mean marine fish body oils, marine mammal oils being excluded from consideration.
- Full Text:
- Date Issued: 1954
- Authors: Silk, M H
- Date: 1954
- Subjects: Compounds, Unsaturated
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4518 , http://hdl.handle.net/10962/d1014332
- Description: [From Introduction, p. 3] Raw marine oils are subject to considerable variation in composition with season and are moreover very unbalanced oils for direct use in the paint industry. Further refining is undertaken chiefly by Messrs Marine Oil Refiners of Africa Ltd., whose factory is situated at Simonstown. In their plant marine oils and others are treated by the Solexol process involving counter current extraction of the oil with liquid propane in a tower over which a temperature gradient is maintained. The process achieves the removal of a large proportion of the relatively saturated glycerides, the natural antitioxidants, and the relatively highly unsaturated components, all of which are detrimental to the eventual formation of good paint films. The segregated marine oil from the Solexol process is then bodied or polymerised at high temperatures to yield a "drying oil" which is used as a substitute for bodied linseed oil in paints. The chemical reactions taking place during the polymerisation and drying of these oils are of an exemely complex nature, and for their understanding it is necessary to have an accurate knowledge of the chemical nature of the component fatty acids in the natural glycerides ... The term "marine oils" in this work should be understood to mean marine fish body oils, marine mammal oils being excluded from consideration.
- Full Text:
- Date Issued: 1954
The determination of the solubility of mercurous chloride at 25°C
- Authors: Dry, Mark Eberhard
- Date: 1954
- Subjects: Mercuric chloride
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4463 , http://hdl.handle.net/10962/d1011576 , Mercuric chloride
- Description: After the publication of the paper by Gledhill and Malan in which precision conductance techniques were used for the first time in the determination of the solubility of silver chloride, Dr. N.H. Perton of Christchurch College, New Zealand, wrote to Gledhill and suggested that the same methods might be rewarding if applied to the determination of the solubility of mercurous chloride. A review of the Chemical literature showed that the values for the solubility of mercurous chloride were not at all consistent. Into., p. 1
- Full Text:
- Date Issued: 1954
- Authors: Dry, Mark Eberhard
- Date: 1954
- Subjects: Mercuric chloride
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4463 , http://hdl.handle.net/10962/d1011576 , Mercuric chloride
- Description: After the publication of the paper by Gledhill and Malan in which precision conductance techniques were used for the first time in the determination of the solubility of silver chloride, Dr. N.H. Perton of Christchurch College, New Zealand, wrote to Gledhill and suggested that the same methods might be rewarding if applied to the determination of the solubility of mercurous chloride. A review of the Chemical literature showed that the values for the solubility of mercurous chloride were not at all consistent. Into., p. 1
- Full Text:
- Date Issued: 1954
The polarographic determination of trace elements in blister and refined copper
- Authors: Eve, Adrian John
- Date: 1954
- Subjects: Copper , Polarographs , Polarography
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4467 , http://hdl.handle.net/10962/d1011769 , Copper , Polarographs , Polarography
- Description: In the complete analysis of copper the following impurities are generally determined: silver, gold, lead, arsenic, antimony, selenium, tellurium, iron, zinc, cobalt, nickel, oxygen, sulphur, and, less commonly, tin and phosphorus. The actual copper content varies around 99.0% in blister copper; in the refined metal the content is somewhat higher, usually over 99.9%. The concentrations of the individual impurities vary from tenths to thousandths of one per cent.
- Full Text:
- Date Issued: 1954
- Authors: Eve, Adrian John
- Date: 1954
- Subjects: Copper , Polarographs , Polarography
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4467 , http://hdl.handle.net/10962/d1011769 , Copper , Polarographs , Polarography
- Description: In the complete analysis of copper the following impurities are generally determined: silver, gold, lead, arsenic, antimony, selenium, tellurium, iron, zinc, cobalt, nickel, oxygen, sulphur, and, less commonly, tin and phosphorus. The actual copper content varies around 99.0% in blister copper; in the refined metal the content is somewhat higher, usually over 99.9%. The concentrations of the individual impurities vary from tenths to thousandths of one per cent.
- Full Text:
- Date Issued: 1954