Chapter II. 



have died of the infection. This trypanosoma is introduced into 

 the system through the sting of a tsetse-fly, the Glossiiia 

 palpalis (Col. Sir D. Bruce). 



Occasionally the disease breaks out in the form of acute 

 mania ; at other times its development is slow and insidious, 

 with only a slight change in the apj^earance of the patient ; 

 presently vertigo makes its appearance, with headache and swell- 

 ing of the lymphatic glands of the neck. At last come trembling, 

 somnolence, a t[uick pulse and an apathy which increases until 

 it reaches the point of torpor or coma. No really sure remedy 

 is known. Sundry arsenical preparations appear to be efficacious, 

 one of them, atoxil, has recently given results which are rather 

 more encouraging, but it is still uncertain as to whether a real 

 cure can be expected. 



IX TlIK rorUTYAHl) OF THE EQl'ATOltlAI. HOTKh, ENTEBKE. 



54 



