^l6 SCIENCE IN AFRICA 



strains of the same parasite from a different locality. Only the 

 N'Dama has proved able to withstand different strains, as well as 

 possessing a high degree of resistance (Stewart 1938). The dis- 

 tribution of stock in all West Africa has been mapped by the French 

 authorities (Grandidier 1933): the line of distinction between the 

 Zebu in the north and the West African shorthorn {petit bceuf sans 

 bosse) in the south cuts Nigeria at the latitude corresponding with 

 the northern border of Dahomey and runs westward to the Senegal 

 River. For some distance on either side of this line crosses between 

 the two breeds predominate, and Mr. J. L. Stewart states (Curson 

 ig34b) that these cross-bred cattle seem to inherit the worst points 

 of each, perhaps owing to uncontrolled breeding. Curson (1934b) 

 also gives brief references to the cattle of other territories in West 

 and North Africa, including French West Africa, the Cameroons, 

 and Liberia. 



In Uganda the cattle types have been the subject of study: there 

 are two widely divergent breeds, the humped Zebu with short 

 horns, which predominates in the Eastern and Northern Provinces, 

 and the long-horned, straight-backed breed of the Western Pro- 

 vince, usually called Ankole. Cross-bred strains occur with the 

 two parent types and occupy the greater part of Buganda Province. 

 It is suggested (Thomas and Scott 1935, p. 195) that the Zebu was 

 established before the longhorn, which apparently accompanied 

 the ancestors of the Bahima on their arrival in Uganda perhaps 

 four or five centuries ago. Data on the numbers and distribution 

 of cattle in Uganda, collected in 1933-4, ^^^e been compiled in 

 the form of a map published by the Veterinary Department 

 (Uganda, Veterinary, 1934, D.R.) and similar figures have been 

 collected during a cattle census in Tanganyika (Tanganyika, 

 Veterinary, 1935, D.R., p. 28). 



Da Costa (1933) has described the native cattle in the Portu- 

 guese possessions. These include a small humpless race in Portu- 

 guese Guinea, claimed to be a representative ofBosprimigenius and 

 closely related to the cattle of Morocco and Algeria. It is note- 

 worthy that da Costa holds a different view on the origin of the 

 Afrikander from that of Curson and Epstein. 



