TEYrANOSOlIIASIS IN THE ANGLO-EGYPTIAN SUDAN 



123 



The blood of the mules seen at Taiifikia literally swarmed with trypanosomes, and 

 was thin, greasy, and ditticult to spread on the slide. One animal died but had decomposed 

 before we got word of its decease. The death of a second enabled a post-mortem to be 

 performed. The most marked change was in the meninges whicli were miuh thickened, the 

 dura being very adherent to the skull. The brain was congested and the cerebral vessels 

 gorged with blood. 



Otherwise but little was found, the spleen not showing any increase in size or marked Post-mortem 

 congestion. The liver was fatty. Unfortunately the stomach was not opened, a regrettable 



Fig. 67. -Mi ll. Aiii-.crhu \mtii TKVf.\NUbu.%:l.\bl-s. 



oversight on my part. It looked healthy viewed externally. There was no gelatinous 

 subcutaneous exudation nor was the connective tissue cedematuus. 



From the third mule the dog was inoculated, about 4 c.c. being given subcutaueously 

 on January 16th, 1905. On January 22nd, 1905, trypanosomes were for the first time 

 found in this dog's blood. Slides of the mule's blood were sent to Professor Laveran, who 

 describes the forms found in the same article as that in which he deals with 7'. nanum, 

 the trypanosome of cattle. 



After remarking that the parasites were verv numerous, he proceeds to distinguish Morphology of 



" ^ ^ ' I ° the mule 



two types. trypanosomes 



"a. Small forms measuring 12 to 14 ^ in length by 1'5 ^ to 2'5 f-i in breadth. 

 These trypanosomes recall very much the appearance of the small forms of 

 T. <runorphon. The protoplasm is prolonged as far as the extremity of the fiagellum, 

 which in consequence does not exhibit a free part. The undulating membrane is 

 more developed than in T. nnniun and causes the parasite to present an even more 

 "stumpy" aspect. The nucleus is situated sometimes at the centre, sometimes at the 

 junction of the posterior with the middle third. The protoplasm contains chromatin 

 granules and these are sometimes very numerous. Forms in pro^'css of division are 

 encountered with two centrosomes and one nucleus, two centrosomes and two nuclei, etc. 



