270 
-Methylated Fluorescein 
Average of 4 rats 
0 days 
Eosin 
Average of 4 rats 
ij days 
Erythrosine 
Average of 4 rats 
0 days 
Floxine 
Average of 3 rats 
2 days 
Bengal rose 
Average of 2 rats 
0 days 
Rhodamine 
Average of 3 rats 
5-5 
Dia^otized Rhodamine 
Average of 4 rats 
5 days 
Afridol violet 
Average of 3 rats 
4 days 
Afridol blue 
Average of 6 rats 
5 days 
Trypanred 
Average of 5 rats 
6 days 
Acetylated Rhodamine 
Average of 2 rats 
5 days 
Azogreen 
Average of 2 rats 
I'j days 
Fuchsin 
Average of 7 rats 
8-5 days 
New Green 
Average of 6 rats 
0 days 
Crystal Violet 
Average of 6 rats 
0 days 
Antipyrin 
Average of 6 rats 
2-5 days 
A few experiments were 
made with Parafuchsin,^ given 
subcutaneously ; they were far from satisfactory. 
Since the discovery of ' Trypanroth,’ I, by Ehrlich and Shiga, ^ 
great attention has been given to the trypanocidal properties of 
different aniline dyes belonging either to the Diazo-group, the 
Afridols of Mesnil and Nicolle,® or to the Triphenylmethane group, 
the Malachite Green,’ II, of Wendelstadt and Fellmer.® 
NaO,S 
SO.Na 
— N = N\ 
h,n/\/A. 
NaO,S\^\^SO,Na 
n. 
