Browsing 1926 11th and 12th Reports of the Director of Veterinary Education and Research - Part 1, September 1926 by Title

Browsing 1926 11th and 12th Reports of the Director of Veterinary Education and Research - Part 1, September 1926 by Title

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  • A group of micro-organisms transmitted hereditarily in ticks and apparently unassociated with disease 
    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 ...
  • Helminthology notes 
    Monnig, H.O.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture (Pretoria : Government Printer and Stationery Office, 1926)
  • Helminths collected from the domestic fowl (Gallus domesticus) and the domestic pigeon (Columba livia) in Natal 
    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 ...
  • Krimpsiekte 
    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 ...
  • The life histories of Trichostrongylus instabilis and T. rugatus of sheep in South Africa 
    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 ...
  • Necrobacillosis in equines : clinical, pathological, and aetiological studies on an outbreak 
    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 ...
  • Notes on the decomposition of diluted polysulphide dips 
    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 ...
  • Physiological plant studies in South Africa Part I : wilting and osmotic phenomena of grasses and other plants under arid conditions 
    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 ...
  • Physiological plant studies in South Africa Part II : transpiration of grasses and other plants under arid conditions 
    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 ...
  • Preliminary report upon the occurrence of hydrocyanic acid in the grasses of Bechuanaland 
    Henrici, M.; Du Toit, P.J. (Pretoria : Government Printer and Stationery Office, 1926)
    The occurrence of cyanogenetic compounds in grasses which do not show such in the normal fresh state is common during wilting or withering of natural veld in Bechuanaland. The phenomenon is particularly noticeable at the ...
  • Remarkable case of volvulus in a calf due to aplasia of the mesentery 
    Steck, W.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture (Pretoria : Government Printer and Stationery Office, 1926)
    (1) A three-month-old bull-calf dies suddenly as a result of a complicated volvulus. (2) This volvulus is due to a reduction of the mesentery (probably congenital) in a part of the small intestine, which allows a part to ...
  • Report on the transmission of nagana in the Ntabanana and Mhlatuze settlements, Zululand 
    Bedford, G.A.H.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture (Pretoria : Government Printer and Stationery Office, 1926)
  • Serological investigations into some diseases of domesticated animals in South Africa caused by trypanosomes 
    Robinson, E.M.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture (Pretoria : Government Printer and Stationery Office, 1926)
    1. The complement fixation test may be used for the diagnosis of dourine occurring naturally in South Africa, provided T. equiperdum antigen is employed. 2. Animals infected with T. brucei react to the complement fixation ...
  • Splenectomy in domesticated animals and its sequelae, with special reference to anaplasmosis in sheep 
    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. A certain percentage of South African sheep kept locally become “carriers” of anaplasma. The course of the disease is evidently of such a mild nature that it has never been identified naturally. 2. When sheep introduced ...
  • Urginea macrocenta (Baker) : its toxic effects on ruminants 
    Mitchell, D.T.; Theiler, Arnold, Sir, 1867-1936; Union of South Africa. Department of Agriculture (Pretoria : Government Printer and Stationery Office, 1926)
    In South Africa three species of liliaceous plants occur to which the common name of Slangkop (snake head) has been given, all of which have been blamed for many years as a cause of mortality in stock. They are: Urginea ...