272 
V. THE THERAPEUTIC VALUES OF ATOXYL AND ACETYLATED 
ATOXYL COMPARED (8) 
Under this heading- experiments were made with dogs, guinea 
pigs, and mice, and the effects of Atoxyl, of acetylated Atoxyl, and 
of acetylated Atoxyl followed by Mercury bichloride were compainA 
T^^ypanosonia brucei was the infecting parasite in each instance. 
A- Dogs. 
Experiment 41c . 
— r V 14PUMC4 
fourfh'V ^ — Trypanosome.s appeared in the peripheral circulation 0 
5 »' a ‘"O per cent, solution of Atosjl 
trypanosomes disappeared from the blood, 
W- 
— j iiiucuiai 
given on the fifth day. The" tr 
death ensued on the seventh day - 
fourth '’YP^iiosoiTies appeared in the peripheral circulation 
Atoxyl ti inoculation. A dose of a c.cm. of a five per cent, solut: 
on the eighth day alth^^ 
^ ngh the parasites had disappeared and remained abs 
fourth day. Trypanosomes appeared in the peripheral blood 0 
per cent, solution of ® ^ 
«on Of Atoxyl was given. The parasites disappeared but reapp 
