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Browsing 1926 11th and 12th Reports of the Director of Veterinary Education and Research - Part 1, September 1926 by Type "Article"
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Monnig, H.O.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
(1) Cysticercoids, of which the hooks resemble those of Amoebotaenia sphenoides, were found in earthworms collected in a fowl-run infested with this tapeworm.
(2) Earthworms [Ocnerodrilus (Hyogenia) africanus, Beddard, ...
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De Kock, G.; Quinlan, J.B.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
1. Gonderia ovis was noticed in the blood of splenectomized “carriers” of Anaplasma.
2. They were not observed in the blood of non-splenectomized sheep.
3. All transmission experiments to susceptible sheep, and in some ...
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Viljoen, P.R.; Scheuber, J.R.; Du Toit, P.J.
(Pretoria : Government Printer and Stationery Office, 1926)
(1) Blackquarter has been known to exist in South Africa ever since the first veterinarians came to this country. At the present time it is widespread, occurring as an enzootic in many parts of the country, and being ...
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Neser, C.P.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
1. In the dikkop form of horse-sickness:
(a) sedimentation of red corpuscles is much accelerated in the later stages of the disease, owing to clumping of the cells. This clumping is due to a property acquired by the ...
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Bedford, G.A.H.; Du Toit, P.J.
(Pretoria : Government Printer and Stationery Office, 1926)
Before commencing to write this paper, it was realized only too fully that any check list or host list of the external parasites occurring on South African mammals, birds, and reptiles written at the present time would be ...
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Bedford, G.A.H.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
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Henrici, M.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
1. The chlorophyll-content of Bechuanaland grasses is not constant throughout the year, but varies from a very high initial value on young leaves, decreases according to the duration and intensity of drought periods, and ...
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Baer, J.G.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
Whereas the South American and Australian helminth-fauna is comparatively well known, that of South Africa has been sadly neglected until recent years. The probable reason of this is that scientific explorers do not generally ...
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Cowdry, E.V.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
A Gram-negative, intracellular, coccus-like micro-organism was found in cases of heartwater in the three species which are susceptible to the disease, namely, goats, sheep, and cattle. The presence of this micro-organism ...
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Cowdry, E.V.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
The evidence observed in favour of a causative relationship between Rickettsia ruminantium and the production of heartwater falls under the following headings:
(1) The discovery of Rickettsia ruminantium in the tissues ...
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Curson, H.H.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
Under the circumstances, it is felt that, provisionally at any rate the parasite may be considered as a species of Leishmania, and it is proposed that it be named Leishmania caprae. n.s. The smear is now in the possession ...
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Cowdry, E.V.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
1. Pleomorphic, bacterium-like, Gram-negative, intracellular micro-organisms, which stained much less intensely with ordinary dyes than most bacteria, were found in fifteen ticks comprising examples of both the Argasidae ...
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Monnig, H.O.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
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Le Roux, P.L.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
1. The domestic fowl (Gallus domesticus) in Natal suffers heavily from verminous infestations.
2. Six species of nematodes and nine species of cestodes have been collected from the digestive tract of the fowl.
3. Three ...
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Henning, M.W.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
On reviewing the results of these experiments, there can be little doubt that the plant Cotyledon wallichii Harv. (kandelaar bos or bandjes bos) is at least one of the causes of the disease known as krimpsiekte in the ...
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Monnig, H.O.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
Experiments in connection with the following points are in progress, and have been partly completed: (a) Bionomics of the free-living larval stages. (b) The development of the worms in sheep at different seasons. (c) The ...
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Quinlan, J.B.; Steck, W.; Robinson, E.M.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
The primary lesions are infected wounds in various parts of the body, most frequently in the extremities, from which, owing to the invasion with virulent necrosis bacilli, necrosis and gangrene and collateral phlegmons ...
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Van Zyl, J.P.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
Although the recorded work is not comprehensive enough to allow for very definite conclusions, it is indicated that the decomposition of this common scab dip is not so rapid nor of such a nature that the farmer with a small ...
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Henrici, M.; Du Toit, P.J.
(Pretoria : Government Printer and Stationery Office, 1926)
A description of the meteorological, tellurical, and edaphic features of a typical farm in the semi-arid region of Bechuanaland is given, and the osmotic behaviour of the local flora recorded. The differences between suction ...
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Henrici, M.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture
(Pretoria : Government Printer and Stationery Office, 1926)
From the locus of writing this article and the companion paper on “Wilting,” it is impossible to consult the extensive literature on transpiration available in European libraries, and for many points of reference Burgerstein's ...