Steyn, D.G.Du Toit, P.J.2016-07-072016-07-0720161935Steyn, DG 1935, ‘Plant Poisoning in Stock and the Development of Tolerance’, Onderstepoort Journal of Veterinary Science and Animal Industry, vol. 4, no. 2, pp. 417-420.0330-2465http://hdl.handle.net/2263/54081The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.From the results of experiments conducted upon fourteen rabbits it appears that repeated ingestion of small amounts of slangkop does not induce the development of tolerance but that the plant has cumulative effects. What has been said about gifblaar (Steyn, 1934) in this repect, is also applicable to slangkop. As the active principle of slangkop belongs to the digitalis series the above findings are not at all surprising.en© 1935 ARC - Onderstepoort and Faculty of Veterinary Science, University of Pretoria (original). © 2016 University of Pretoria. Dept. of Library Services (digital).Veterinary medicineVeterinary reportsPlant poisoningVeterinary medicine -- South AfricaArticle