^4 
Congo, and several patients are now under treatment with it The 
result has been an apparent success so far, but it is of course too early 
to speak definitely as to the final result, because it is well known that 
patients may survive for several years, even without treatment, and 
yet ultimately succumb. For example, we have had cases under 
observation for four years without a fatal result- -I am. etc. 
RONALD ROSS. 
Professor of Tropical Medicine, 
Incorporated School of Tropical Medicine. 
Sepf. 21S/., 1906. 
Editor ‘ British Medical Journal.’ 
At the end of 1907 overwhelming clinical proof derived from the 
human subject is forthcoming, as we shall see. The statement that 
‘ We have in Atoxyl the specific drug for trypanosomiasis, as we have in 
Qumine that for Malaria,’ fairly represents the view of Professor Koch. 
Sir Patrick Manson, who has had the largest experience of this 
drug in human cases of trypanosomiasis in this country, concludes in 
the following words : The prospects of atoxyl treatment I consider 
most hopeful. As regards efficiency and mode of action, it seems to 
me that it is almost on a par with mercury in syphilis and quinine in 
malaria; and I think m using atoxyl we should conform our practice 
' don't believe we can 
kill the trypanosomes outnght by one or two large doses of atoxvl 
not immedirtely'Ll “ ti& ^ d«s 
malaria; buf they deorive thei ^ qmnine immediately cure 
genic properties and keep the pltiTm ap'^^ Parasites of their patho- 
process of time, the palhes X dielro, K 
inert’ become permanently 
By far the largest clinical experience nf a 
been obtained by Professor K^ch and his 
conviction is overwhelming on the advam their 
previous ones. of this drug over all 
- Ertm'cLf f:’ Expedttion 
(Deutsche, med. Wochensch.ft, Jahr. XXXlirNa 
