Browsing 1907 Report of the Government Veterinary Bacteriologist of the Transvaal 1907 - 1908 by Type "Technical Report"

Browsing 1907 Report of the Government Veterinary Bacteriologist of the Transvaal 1907 - 1908 by Type "Technical Report"

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  • Comparative physical-chemical research, with special reference to horsesickness 
    Frei, Walter; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Experiments were undertaken to find differences by means of various physical methods combined between normal horses, horses suffering from horse-sickness, horses immune and hyperimmune against horse-sickness and serum ...
  • Electric conductivity 
    Frei, Walter; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Experiments were carried out to study quantitatively the influence of various organic colloids in different concentrations on the conductivity of the same electrolyte, that is to say, the influence of albumine, globuline, ...
  • Fever reactions in horses simulating horsesickness 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Conclusions: The injection of two-mule Tzaneen virus protected against four-mule Tzaneen virus, but not completely against the exposure virus. The two-mule Tzaneen virus, the four-mule Tzaneen virus, and the exposure virus ...
  • Further experiments with biliary fever in equines 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Horses and mules were inoculated against piroplasmosis and it was found that Argentine and Transvaal horses and mules can safely be inoculated against piroplasmosis by using donkey foal blood of the fourth generation and upwards.
  • Horsesickness 
    Frei, Walter; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Physical-chemical characteristics of horses such as body temperature, volume of erythrocytes, viscosity of blood, viscosity of serum, specific gravity of serum, conductivity of serum etc. were examined.
  • The immunity of cattle inoculated with Piroplasma mutans 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    CONCLUSIONS: 1. The exposure of animals immune against redwater in the low veld proved that this immunity protected against the redwater of that veld. 2. Animals immune against heartwater were protected against that ...
  • The influence of cold on ticks and Piroplasma parvum 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Resume: 1. A temperature of 0 C. retards the hatching of Rhipicephalus appendiculatus nymphae into adults. 2. A temperature of 0 C. does not interfere with the development of the parasite within the engorged nymphae. 3. ...
  • The inoculation of mules with polyvalent virus 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Conclusions: 1. Animals immunised with a polyvalent virus and tested with the same virus show reactions when subsequently retested with the identical virus. 2. When the immunity was tested with constituents of this ...
  • Letter of transmittal 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
  • The loss of virulency of horsesickness virus in practice 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Resume: The experiments prove that a virus may become inert in practice; this avirulency is due to some foreign matter, inasmuch as inert virus added to virulent sterile virus promptly produces avirulency. It is probable ...
  • On the variability of a particular strain of horsesickness virus 
    Theiler, Arnold, Sir, 1867-1936; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Conclusions: 1. The virus Tzaneen has in no instance been virulent for all mules injected; this virulency differs, so to say, from animal to animal; one particular animal seems to influence the virus in such a way that ...
  • Piroplasmosis 
    Frei, Walter; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    RESUME. 1. Piroplasmosis of the horse is a disease with periods also pronounced by physical-chemical alterations of blood and serum. 2. The haemolysis, produced by the intra-globular parasites, has to be considered to ...
  • Surface tension of serum 
    Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Resume: The surface tension IS a factor of enormous biological importance, especially for the phenomena of haemo- and bacteriolysis, phagocytosis and enzyme reactions. The surface tension of serum of horses suffering ...
  • Viscosity 
    Frei, Walter; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Viscosity of blood, defibrinated blood, serum and plasma are compared.
  • Volume of blood corpuscles 
    Frei, Walter; Transvaal Department of Agriculture (Pretoria: Government Printer and Stationery Office, 1909)
    Values for the volumes of blood corpuscles of horses, donkeys and sheep are examined.