• Author index 

  Anonymous; Du Toit, P.J. (Pretoria : The Government Printer, 1943)
• Curve fitting by the orthogonal polynomials of least squares 

  Van der Reyden, D.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  The systems of orthogonal polynomials mainly used in practice are derived from a common general formula, which is established by the principle of least squares, utilizing results from the Finite Calculus. A simplified ...
• Some aspects of solar radiation in its relation to cattle in South Africa and Europe 

  Riemerschmid, G.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  Two aspects of solar radiation in its relation to cattle in South Africa and Europe are considered. The first is the solar radiation itself and the factors influencing its intensity and total amount incident on a horizontal ...
• The recovery of potassium carbonate from wool scouring liquor and the conversion of the recovered potassium carbonate to commercial potassium sulphate, using naturally occurring gypsum as sulphate source 

  Van der Merwe, P.K.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  In studying ways and means of converting, on a commercial basis, an alkali carbonate such as potassium carbonate to the corresponding alkali sulphate, one should bear in mind that the success of the conversion should be ...
• Sheep blowfly research. IV. Field tests with chemically treated carcasses 

  Hepburn, G.A.; Nolte, M.C.A.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  1. The pH of opened carcasses could not be controlled satisfactorily by dusting chemicals on them; but it is also very unlikely that better results will be obtained by the use of solutions of chemicals instead of powders. 2. ...
• Subject index 

  Anonymous; Du Toit, P.J. (Pretoria : The Government Printer, 1943)
• Chemical blood studies. IX. The fractional determination of the acetone bodies in blood and urine of sheep suffering from domsiekte 

  Malan, J.R.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  Methods for the determination of the acetone bodies in both blood and urine in sheep suffering from Domsiekte are given. The preliminary treatment with basic lead acetate and ammonia, has been found to be of no advantage ...
• Genetics in the diagnosis of bovine congenital porphyrinuria (pink tooth) 

  Fourie, P.J.J.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  A Shorthorn bull 7597 remotely related to a porphyrin carrier (Dr) bull (7015) and showing skin lesions of photosensitization from calfhood, was bred to two cows suffering from congenital porphyrinuria (pink tooth). ...
• Pigment metabolism. II. Determinations of bilirubin and carotinoids in the plasma and of coproporphyrin in the urine and faeces of cattle experimentally infected with Theileria parva 

  Roets, G.C.S.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  The investigations on Theileria parva infection of cattle revealed : (1) That bilirubinaemia did occur, the highest figure for plasma bilirubin being 12 v. d. Bergh units. (2) That the yellow staining of the fat is due ...
• Pigment metabolism. I. The examination of the urine and blood of dogs for bilirubin and haemoglobin 

  Roets, G.C.S.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  1. In all the cases of bilirubinaemia examined, whether the animals suffered from canine piroplasmosis or hepatic disturbances abnormal amounts of bilirubin were excreted in the urines. 2. Haemoglobin was frequently ...
• Domsiekte or pregnancy disease in sheep. IV. The effect of obesity on the reaction of sheep to a sudden reduction in diet 

  Clark, R.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  1. Obesity is a potent factor in the causation of "pregnancy disease" or domsiekte. 2. In the absence of fatal acetonaemia, prolonged semi-starvation of sheep causes a gradual decrease in the circulating lymphocytes ...
• Domsiekte or pregnancy disease in sheep. III 

  Clark, R.; Groenewald, J.W.; Malan, J.R.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  (1) It has been confirmed that a sudden and drastic reduction in diet of fat ewes in the fourth month of pregnancy causes typical domsiekte or pregnancy disease. The condition was evinced clinically, chemically and ...
• Paresis in pigs in relation to nutritional deficiencies 

  Kellermann, J.H.; Schulz, K.C.A.; Thomas, A.D.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  1. A form of paralysis or paresis prevalent in some parts of the Union in young pigs is described. There was evidence already that it was due to a deficient diet. 2. Experiments were carried out to establish the cause ...
• Depletion of substantial vitamin A-reserves in growing rats 

  Myburgh, S.J.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  1. Rats of 5-6 weeks of age with a vitamin A-reserve of about 1,200 I.U., when fed a vitamin A deficient ration depleted their reserves in the livers in 24 weeks’ time. 2. Characteristic symptoms were observed in the ...
• The effects of diethyl-stilboestrol and pregnant mare serum on the oestrous cycle of merino ewes 

  Quin, J.I.; Van der Wath, J.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  From the observations made on: normal ewes as well as on spayed ewes following treatment with stilboestrol and pregnant mare serum, evidence is presented showing that seasonal anoestrus in merino ewes is closely associated ...
• Recent investigations into the toxicity of plants, etc. XIII 

  Van der Walt, S.J.; Steyn, D.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  Of the twenty-two plants investigated, six were, for the first time, proved to be toxic, namely Boscia foetida Schinz., Cadaba juncea (Linn.) B. & H., Othonna cluytifolia O.K., Drimia alta R. A. Dyer, Scilla natalensis ...
• The isolation of the toxic principle "potassium cymonate" from "Gifblaar" Dichapetalum cymosum (Hook) Engl 

  Marais, J.S.C.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  A method for the isolation of potassium cymonate, the toxic principle of Dichapetalum cymosum has been described. The M.L.D. of potassium cymonate for the rabbit is 0.5 to 0.75 mgm. per kilogram bodyweight.
• Lantanin, the active principle of Lantana camara L. Part 1. Isolation and preliminary results on the determination of its constitution 

  Louw, P.G.J.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  1. The photosensitising constituent of Lantana camara L. has been isolated and named Lantanin. The empyrical formula is C₃₁H₄₄O₅. 2. The functions of the five oxygen atoms have been determined, viz., a lactone group, ...
• Grass hay as a maintenance ration for sheep during winter 

  Louw, J.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  Constant live-weight has been used as criterion in measuring the maintenance requirement of adult sheep during winter. It has been found that an animal weighing 100 lb. requires 2.106 lb. of a grass hay, containing 1622 ...
• The influence of varying maize supplements on the digestibility of the cellulose in a poor veld hay in relation to the bacterial population of the rumen of sheep with a note on the nitrogen metabolism 

  Louw, J.G.; Van der Wath, J.G.; Du Toit, P.J. (Pretoria : The Government Printer, 1943)

  From the results of a series of metabolism studies on sheep with open rumen fistulae in which a basal ration of winter grazing was supplemented with meatmeal and increasing amounts of crushed maize it was found that: (1) ...

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