300 
Cure of Surra 
Pony C 60. 650 lbs. 
1st day 600 c.c. ars. ac. sol. 8th day 800 e.e. ars. ac. sol. 
2nd ,, 60 c.c. atoxyl. 9th ,, 60 c.c. atoxyl. 
3rd „ l - 5 gms. ars. ac. 10th „ 2 gms. ars. ac. 
Four days interval. 
A relapse occurred three days after last dose. The animal was then 
treated with atoxyl and arsenic in alternate doses. 
1st day 60 c.c. atoxyl. 11th day 2 gms. ars. ac. 
3rd ,, 2 gms. ars. ac. 13th „ 60 c.c. atoxyl. 
5th ,, 60 c.c. atoxyl. 15th „ 2 gms. ars. ac. 
7th ,, 2 gms. ars. ac. 17th ,, 60 c.c. atoxyl. 
9th ,, 60 c.c. atoxyl. 19th „ 2 gms. ars. ac. 
No return of trypanosomes. Kept under observation 3 months. 
Pony C 61. 600 lbs. 
1st day 600 c.c. ars. ac. sol. 
2nd ,, 60 c.c. atoxyl. 
3rd „ 1*5 gms. ars. ac. 
Four days interval. 
8th day 800 c.c. ars. ac. sol. 
9th ,, 60 c.c. atoxyl. 
10th ,, 2 gms. ars. ac. 
Four days interval. 
15th day 1000 c.c. ars. ac. sol. 
16th „ 75 c.c. atoxyl. 
17th ,, 2 gms. ars. ac. 
Eight days interval. 
26th day 1000 c.c. ars. ac. sol. 
27th „ 60 c.c. atoxyl. 
28th ,, 2 gms. ars. ac. 
Trypanosomes reappeared 12 days after last dose. The animal was 
then put on treatment with atoxyl and arsenic in alternate doses. 
1st day 60 c.c. atoxyl. 
3rd „ 1*5 gms. ars. ac. 
5th ,, 60 c.c. atoxyl. 
7th „ 1*5 gms. ars. ac. 
9th „ 60 c.c. atoxyl. 
No return of trypanosomes. 
11th day 2 gms. ars. ac. 
13th „ 60 c.c. atoxyl. 
15th ,, 2 gms. ars. ac. 
17th „ 60 c.c. atoxyl. 
19th ,, 2 gms. ars. ac. 
Kept under observation 3 months. 
Pony C 62. 580 lbs. 
1st day 600 c.c. ars. ac. sol. 
2nd „ 60 c.c. atoxyl. 
3rd „ 1*5 gms. ars. ac. 
The pony showed symptoms of poisoning after last dose. Treatment 
was suspended for three weeks. A relapse occurred, and the animal 
was then treated with atoxyl and arsenic in alternate doses. 
1st day 60 c.c. atoxyl. 
3rd ,, 1 gm. ars. ac. 
5th „ 60 c.c. atoxyl. 
7th ,, 1*5 gms. ars. ac. 
9th „ 60 c.c. atoxyl. 
11th day 2 gms. ars. ac. 
13th ,, 60 c.c. atoxyl. 
15th ,, 2 gms. ars. ac. 
17th ,, 60 c.c. atoxyl. 
19 th ,, 2 gms. ars. ac. 
No return of trypanosomes. Kept under observation 3 months. 
