• Zoological Survey of the Union of South Africa. Tick Survey. Part I. Distribution of Amblyomma hebraeum, the Heartwater Tick 

  Theiler, Gertrud; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. The distribution of A. hebraeum has been given in terms of political divisions as well as in terms of vegetational coverage. 2. A. hebraeum is seen to be present in the parklands and in the bushveld of the summer ...
• Bioclimatological studies on white rats in South Africa. No 1. Skin cancer in rats following continued exposure to sunlight 

  De Kock, G.; Quin, J.I.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. Skin cancer in rats (and in mice) can be produced by exposing them daily for definite periods to ultraviolet light. 2. Roffo produced identical neoplasms in rats by exposing them daily for 5 hours to sunlight. This was ...
• Researches into sterility of cows in South Africa. The influence of dry rations, lack of exercise, and lack of sunlight on reproduction of beef heifers and cows 

  Quinlan, J.; Roux, L.L.; De Lange, M.; Van Aswegen, W.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. The effects of a dry ration, high condition, and the restriction of sunlight, and exercise upon sexual activity and reproduction of beef females have been studied. The observations were conducted on 30 grade (mostly ...
• Dr P.J. du Toit : an appreciation 

  De Kock, G.; Robinson, E.M.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  Retirement of Dr. P.J. du Toit as Director of Veterinary Services, Department of Agriculture, and as Dean of the Faculty of Veterinary Science, University of Pretoria, Union of South Africa.
• Studies on the alimentary tract of Merino sheep in South Africa. XV. The influence of different factors on the rate of cellulose digestion in the rumen and in ruminal ingesta as studied in vitro 

  Hoflund, S.; Quin, J.I.; Clark, R.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  (1) The rate of cellulose digestion in ruminal ingesta was studied both in vivo and in vitro by a new technique in which cotton threads were used as test material. (2) It was found that the rate of cellulose digestion ...
• Studies on the alimentary tract of Merino sheep in South Africa. XIV. The effect of some commonly used antifermentatives in the in vitro formation of gas in ruminal ingesta and its bearing on the pathogenesis of bloat 

  Clark, R.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. It has been shown that turpentine and two proprietary coal-tar preparations have little or no inhibitory action on gas formation in ruminal ingesta incubated in vitro when added in therapeutic concentrations. 2. Very ...
• Studies on the alimentary tract of the Merino sheep in South Africa. XII. A technique for the counting of ruminal bacteria 

  Van der Wath, J.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)
• Studies on the alimentary tract of Merino sheep in South Africa. XI. Digestion and synthesis of starch by ruminal bacteria 

  Van der Wath, J.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. The only diastases present in the rumen seem to be those secreted by ruminal bacteria, which would then be responsible for the entire starch disintegration seen there. 2. In the rumen of sheep receiving a regular ...
• On the availability of phosphorus in bonemeal, bonemeal supplemented with red oxide of iron, and bone ash to white rats 

  Louw, P.G.J.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  Two experiments have been carried out with albino rats in which the availability of phosphorus in bonemeal , bonemeal supplemented with red oxide of iron and boneash have been tested out. In the preliminary experiment the ...
• The digestibility, for sheep, of the cellulose in a poor veld hay, as affected by supplements of a mixture of concentrates and green feed 

  Louw, J.G.; Bodenstein, S.I.; Quin, J.I.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  The influence of varying amounts of a supplement consisting of starch, casein, brewers yeast and minerals, alone and in conjunction with one of green feed, on the digestibility of the cellulose in a basal ration of ...
• Lantadene A, the active principle of Lantana camara L. Part II. Isolation of lantadene B, and the oxygen functions of lantadene A and lantadene B 

  Louw, P.G.J.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. The active principle of Lantana camara L. has been renamed “Lantadene A”. 2. An inactive cogener of Lantadene A has been isolated and named “Lantadene B”. 3. The functions of the oxygen atoms in Lantadene A and B ...
• Bacillary white diarrhoea of poultry and its eradication in the Union of South Africa 

  Canham, A.S.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  (1) Standardization should be carried out with all strains of organisms and antigens prior to utilization for testing purposes. Single strains of organisms should be submitted to low dilution testing before use as ...
• The effect of inflammation on the development of immunity to anthrax in guinea pigs 

  Sterne, Max; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. An acute inflammation has the same general inhibitory effect on immunizing power that it has on the virulence of anthrax strains. 2. Irritant excipients have the same local stimulating effect on small immunizing doses ...
• The effect of inflammation on the survival of guinea pigs infected with anthrax 

  Sterne, Max; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  (1) The development of anthrax in guinea pigs is slowed down if an acute inflammation accompanied by an oedema is provoked elsewhere in the body. Thus the injection of saponin into a fore-limb or into the peritoneal cavity ...
• Professional staff, Onderstepoort laboratory 

  Anonymous; Du Toit, P.J. (Pretoria : The Government Printer, 1948)
• Preliminary note on the cultivation of Green's distemperoid virus in fertile hen eggs 

  Haig, D.A.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  Green's distemper vaccine virus has been propagated 30 generations in developing hen eggs. Injections were made onto the chorio-allantoic membranes of eggs that had received a preliminary incubation of 8 days. Re-incubation ...
• The particle size of bluetongue virus as determined by ultrafiltration and ultracentrifugation 

  Polson, A.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. The particle diameter of bluetongue virus (sheep virulent and egg adapted virus) was determined by gradocol membrane filtration. 2. Details of the technique for clarifying infective emulsions by aluminium hydroxide ...
• Immunological studies on bluetongue in sheep 

  Neitz, W.O.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. Complaints that the present method of immunization against bluetongue is not safe and that it produces an inadequate immunity have been justified. 2. A plurality of antigenically different virus strains has been ...
• The 1944 epizootic of horsesickness in the Middle East 

  Alexander, R.A.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  (1) The history of horsesickness in Egypt and Palestine is traced. (2) It is believed that the 1944 epizootic was started in Egypt by the introduction of one or more infected equines into the Komombo area from the South ...
• Cytauxzoon sylvicaprae gen. nov., spec. nov., a protozoon responsible for a hitherto undescribed disease in the duiker, Sylvicapra grimmia (Linne) 

  Neitz, W.O.; Thomas, A.D.; Du Toit, P.J. (Pretoria : The Government Printer, 1948)

  1. A new genus and species of a protozoan parasite from the duiker (S. grimmia) is described. The name Cytauxzoon sylvicaprae is proposed for it and it is provisionally classed as a member of the family Theileridae, du ...

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