272 Amakehe : A Disease of Calves in Uganda. 



Conclusions. 



1. The blood of cattle in Uganda almost always contains Piroplasma 

 higeminum and Pirojplasma mutans, and the cattle are therefore immune to 

 these two diseases. 



2. The disease of calves called Amakehe is East Coast Fever, so that very 

 many of the cattle in Uganda ai-e almost immune to this disease. 



3. Owing to the nature of East Coast Fever, inasmuch as animals recovered 

 from the disease are no longer infective, some calves may escape attack of 

 Amakehe, and so remain susceptible. 



4. Thus the calves of the Sesse Islands escape Amakebe, and when as 

 grown-up cattle they are transferred to the mainland, they mostly die of East 

 Coast Fever. 



5. The carriers of East Coast Fever — Hhipicephalus appendiculatus, or 

 brown tick ; Rliipiccphalus evertsi, or red-legged tick ; and BMpicephalus simiis 

 — are all common in Uganda. 



DESCEIPTION OF PLATE. 



The two upper corpuscles show the characteristic pear-shaped forms of Firo- 

 plasma bigeminum as they appear in the blood. The lower amaboid forms 

 are drawn from a preparation of spleen. Stained Giemsa. X 2000. 

 Piroplasma mutawt in the blood. Stained Giemsa. X 2000. 

 The small rod-and-ring-shaped piroplasm, as seen in the blood of a case of 

 Amakebe. Among them are the deeply-stained bodies known as marginal 

 points. Stained Leishman. X 2000. 

 Red blood corpuscles containing piroplasms from the spleen of a case of Amakebe. 



Stained Giemsa. X 2000. . 

 Koch's granules or blue bodies from the spleen of a case of Amakebe. Stained 

 Giemsa. X 2000. 



rig. 1.- 



Fig. 2.- 

 Fig. 3.- 



Fig. 4.- 

 Fig. 5.- 



