8 
THE QUESTION OF THE RELATION OF 
for a year after having been infected with a human 
strain of T. gambiense (‘ Sleeping Sickness Bulletin/ 
No. 85). 
(ii) One antelope was shown by inoculation to be capable 
of infecting a white rat 827 days after its infection 
(‘ Sleeping Sickness Bulletin/ No. 35). 
(iii) As the interval after the infection of the antelope 
increases their infectivity appears to diminish. 
It, therefore, seems probable that the trypano- 
somes gradually die off, but it would be premature 
to conclude so (‘ Sleeping Sickness Bulletin/ No. 35). 
In Bulletin No. 36, issued April 3, 1912, further investigations 
of Fraser and Duke in Uganda are reported. Wild animals 
were examined with a view to ascertaining whether they 
were naturally infected with trypanosomes. Ten Water-buck, 
20 bush-buck, and 2 situtungas ( Tragelaphus spekei) were 
obtained within two miles of the shore of Lake Victoria, where 
the Glossina palpalis were known to be infected with Trypano- 
soma gambiense, T. vivax, and T. uniforme. 
The conclusions arrived at were — 
(i) T. uniforme was the only species of trypanosome obtained 
as the result of examination of wild animals, including 
thirty-six lake-shore antelope (‘ Sleeping Sickness 
Bulletin/ No. 36). 
(ii) The available evidence (which is small — R. B. W.) points 
to bush-pigs, crocodile, monitor, frog, and domestic 
fowls being refractory to T. gambiense (‘ Sleeping 
Sickness Bulletin/ No. 36). 
(iii) The edible rat, which is susceptible to T. gambiense , 
can, by virtue of its habits, be of little importance 
in considering the question of a reservoir (‘ Sleeping 
Sickness Bulletin/ No. 36). 
(iv) The available evidence points to Glossina palpalis 
as being the carrier of this species of trypanosome 
(‘ Sleeping Sickness Bulletin/ No. 36). 
In German East Africa Dr. Wolf el examined forty 
animals for trypanosomes (‘ Sleeping Sickness Bulletin/ 
No. 34, p. 73). These consisted of 31 antelope of various 
species, 7 wart-hogs, a leopard, and a hare. Of these, a reed- 
