102 
Surra 
Sodium antimonyl tartrate. 
Pony no. 116. Body weight 250 lbs., 1st paroxysm. 50 e.c. of 1 °/ 0 solution intra¬ 
venously. Trypanosomes were absent from the blood on following day. They reappeared 
after eight days. 
Pony no. 117. Body weight 260 lbs., 1st paroxysm. 50 e.c. of 1 °/ 0 solution intra¬ 
venously. Was off feed and suffered from colic same and following day. Trypanosomes 
were absent from the blood for five days. 
Mule no. 118. Body weight 500 lbs., 1st paroxysm. 100 c.c. of 1 °/ 0 solution intra¬ 
venously. Trypanosomes were absent for six days. 
Pony no. 119. Body weight 240 lbs., 1st paroxysm. 150 c.c. of 0‘5 °/ 0 solution 
subcutaneously. Animal was off feed for two days. Swelling and heat at the seat of 
inoculation for several days. Trypanosomes were absent for five days. 
Pony no. 120. Body weight 260 lbs., 1st paroxysm. 100 c.c. of 1 °/ 0 solution sub¬ 
cutaneously. The dose was followed by colic diarrhoea, and swelling at the seat of 
inoculation. Thickening of the skin. Symptoms persisted for several days. Trypano¬ 
somes were absent for six days. 
Aniline antimonyl tartrate. 
Pony no. 121. Body weight 250 lbs., 1st paroxysm. 100 c.c. of 1 °/ 0 solution sub¬ 
cutaneously. Swelling and heat at seat of inoculation. Trypanosomes were absent from 
the circulation for eight days. 
Pony no. 122. Body weight 270 lbs., 1st paroxysm. 100 c.c. of 1 °/ 0 solution sub¬ 
cutaneously. Off feed, dull, swelling at seat of inoculation. After six days the skin 
sloughed. Trypanosomes were absent for nine days. 
Lithium antimonyl tartrate. 
Pony no. 123. Body weight 400 lbs., 1st paroxysm. 50 c.c. of 1 °/ 0 solution intra¬ 
venously. Trypanosomes were absent for four days. 
Pony no. 124. Body weight 260 lbs., 1st paroxysm. 100 c.c. of 1 °/ 0 solution intra¬ 
venously. Fed slowly and had colic on the following day. Trypanosomes were absent 
for nine days. 
Pony no. 125. Body weight 400 lbs., 2nd paroxysm. 100 c.c. of 1 °/ 0 solution sub¬ 
cutaneously. Off feed, swelling and pain at the seat of inoculation. Trypanosomes were 
absent for four days. 
Pony no. 126. Body weight 200 lbs., 1st paroxysm. 100 c.c. of 1 °/ 0 solution sub¬ 
cutaneously. Off feed, swelling and pain at the seat of inoculation followed by necrosis 
of the skin. Trypanosomes were absent for nine days. 
List of surra animals which have shown no return of the 
disease after treatment. 
The date of disease at which treatment was commenced is reckoned 
from the day on which trypanosomes appeared in the circulation. 
The period of observation is dated from the completion of the 
treatment. 
