The identification and the transmission of the causal trypanosomes of
the South African type of Dourine has resulted in an improvement of the
methods of diagnosis by means of the examination of the blood and of the
Complement Fixation Test.
My thanks are due to Dr. P. J. du Toit, the Director of Veterinary
Services, for the facilities placed at my disposal, to Dr. G. de Kock, the
Deputy Director, for his valued advice and encouragement and to Dr.
Robinson, the Sub-Director, for all the Complement Fixation Tests.