94 
Surra 
four days and once after an interval of eight days. In a few instances 
the intervals between the doses varied. 
In some cases a dose of atoxyl subcutaneously was given first, which 
cleared the circulation of trypanosomes within 24 hours. 
This system of treatment has been the most successful of any tried. 
Out of 16 animals treated by this method, 12 were cured. In four cases 
the treatment failed : in three instances probably from insufficient doses, 
and in one case the interval between the doses was increased to six and 
12 days. 
All the animals stood the treatment well and rapidly improved in 
condition. 
Pony no. C 18. 300 lbs., 1st paroxysm. 
1st day 40 c.c. atoxyl. 
3rd ,, 300 c.c. ars. ac. 
4th ,, 30 c.c. atoxyl. 
5th ,, 1 gm. ars. ae. 
Four days interval. 
10th day 300 c.c. ars. ac. 
4th day of disease. 
11th day 30 c.c. atoxyl. 
12th ,, 1 gm. ars. ac. 
Eight days interval. 
21st day 300 c.c. ars. ac 
22nd ,, 30 c.c. atoxyl. 
23rd „ 1 gm. ars. ac. 
Trypanosomes appeared in the circulation four days after the last dose, 
course of treatment with increased doses was given. 
1st day 400 c.c. ars. ac. 
2nd ,, 50 c.c. atoxyl. 
3rd ,, 1 gm. ars. ac. 
Two days interval. 
6th day 400 c.c. ars. ac, 
7th ,, 50 c.c. atoxyl. 
8th ,, 1 gm. ars. ae. 
Four days interval. 
13th day 400 c.c. ars. ac. 
14th ,, 50 c.c. atoxyl. 
15th ,, 1-5 gms. ars. ac, 
Eight days interval. 
24th day 400 c.c. ars. ac. 
25th ,, 60 c.c. atoxyl. 
26th ,, 2 gms. ars. ac. 
A second 
No return of trypanosomes. Kept under observation 7J months. 
Pony no. C 23. 300 lbs., 2nd paroxysm. 
1st day 500 c.c. ars. ac. 
2nd ,, 50 c.c. atoxyl. 
3rd ,, 1 gm. ars. ac. 
Four days interval. 
8th day 500 c.c. ars. ac, 
9th ,, 50 c.c. atoxyl. 
10th „ 1 gm. ars. ae. 
Four days interval. 
No return of trypanosomes. 
Pony no. C 24. 300 lbs., 2nd paroxysm. 
1st day 500 c.c. ars. ac. 
2nd ,, 50 c.c. atoxyl. 
3rd „ 1 gm. ars. ac. 
13th day of disease. 
loth day 500 c.c. ars. ac. 
16th ,, 50 c.c. atoxyl. 
17th ,, 1 gm. ars. ac. 
Eight days interval. 
26th day 500 c.c. ars. ac. 
27th ,, 50 c.c. atoxyl. 
28th ,, 1 gm. ars. ac. 
Kept under observation 9 months. 
13th day of disease. 
Four days interval. 
8th day 500 c.c. ars. ae. 
9th ,, 50 c.c. atoxyl. 
