100 
Surra 
Tartar emetic and mercury. 
Pony no. 110. Body weight 260 lbs., 3rd paroxysm. 21st day of disease. 
1st day 50 c.c. of 1 °/ 0 tartar emetic intravenously. 
2nd „ 20 (1 in 1000) HgCl 2 
3rd „ „ 
^th 11 11 11 11 
5th ,, 50 c.c. of 1 % tartar emetic ,, 
6th „ 20 (1 in 1000) HgCl 3 
7 th ,, ,, „ ,, 
8th ,, ,, ,, ,, 
9th ,, ,, ,, ,, 
10th ,, ,, ,, ,, 
11th ,, ,, ,, ,, 
Trypanosomes were absent from the blood from 2nd to 11th day. Reappeared on 
12th day. 
Pony no. 111. Body weight 250 lbs., 3rd paroxysm. 15th day of disease 
1st day 50 c.c. of 1 °/ 0 tartar emetic intravenously. 
2nd „ 20 (1 in 1000) HgCU 
3rd ,, ,, ,j ji 
4th,, ,, ,, ,, 
5th ,, ,, ,, m 
6th ,, ,, ,, n 
7th ,, 50 c.c. of 1 °/ 0 tartar emetic ,, 
8th ,, ,, ,, ,, 
9th ,, 100 c.c. ,, ,, 
Trypanosomes were absent from the blood 2nd to 9th day. Reappeared 17 days after 
the treatment ceased. 
Tartar emetic and atoxyl. 
Pony no. 112. Body weight 600 lbs., 1st paroxysm. 5th day of disease. 
1st day 50 c.c. of 4 % atoxyl. 
3rd ,, 1 gm. of tartar emetic in bolus. 
5th ,, 50 c.c. of 4 °/o atoxyl. 
7th ,, 1 gm. of tartar emetic in bolus. 
9th ,, 50 c.c. of 4 °/o atoxyl. 
11th ,, 1 drachm of tartar emetic in bolus. 
Trypanosomes were absent from 2nd to 11th day. Reappeared on 
12th day. 
Pony no. 113. Body weight 300 lbs., 2nd paroxysm. 13th day of disease. This pony 
was treated with tartar emetic and atoxyl for a period of six weeks, receiving : 
200 c.c. of 4 °/ 0 atoxyl intravenously. 
620 ,, 1 tartar emetic intravenously. 
525 ,, 2 ,, ,, 
The animal improved in condition and the trypanosomes were absent from the blood 
during the period of treatment. 
A month after the treatment was discontinued the parasites reap¬ 
peared in the circulation. 
