508 Trypanosoma present in Gases of Sleeping Sickness. 



is due to the sjjecies of trypanosoma I have found in the cerebrospinal 

 fluid of the patients in this disease, and that at least in the last stages 

 there is a concomitant streptococcus infection which plays a certain 

 joart in the course of the disease. 



Note by the Secretary of the Royal Society. 



As so far supporting the observations by Dr. Castellan i recorded in 

 the above communication, it may be desirable to state that Colonel 

 Bruce, to whom in Uganda Dr. Castellani made known his discovery 

 of the Trypanosoma, and who is now continuing the investigation 

 begun by Dr. Castellani, has sent to the Eoyal Society a telegram,, 

 received May 4, stating that since Dr. Castellani left, in thirty-eight 

 cases of sleeping sickness, he had found trypanosoma in everr case in 

 fluid obtained by lumbar puncture, and that he had found trypanosoma 

 in the blood in twelve out of thirteen cases of sleeping sickness. 



Michael Foster. 



