44 STRONG AND TEAGUE. 



December 23 the blood was negative for parasites and 5 grams of atoxyl were 

 injected; December 25, 30 grams of arsenic sulphide; December 28, 5 grams of 

 atoxyl ; January 1, 15 grams of arsenic sulphide. January 4 trypanosomata re- 

 appeared in the blood and 5 grams of atoxyl were given; January 6, 20 grams 

 of arsenic sulphide; January 8, 5 grams of atoxyl: January 10, 20 grams of 

 arsenic sulphide; January 14, 5 grams of atoxyl; January 18, 20 grams of 

 arsenic sulphide; January 22, 5 grams of atoxyl: January 24, 20 grams of 

 arsenic sulphide: January 26. 20 grams of arsenic sulphide; January 29, 5 

 grains of atoxyl; January 31, 20 grams of arsenic sulphide; February 3, 20 

 grams arsenic sulphide ; February 5, 5 grams of atoxyl ; February 7, 20 grams 

 of arsenic sulphide; February 9, 20 grams arsenic sulphide. February 14, 

 although the condition of the animal appeared good, trypanosomata reappeared 

 in the blood. February 14, 5 grains of atoxyl; February 17, 25 grams arsenic 

 sulphide: February 19, 25 grams of arsenophenylglycin. Since this date the 

 animal has been negative for trypanosomata and is in good condition. 



Mule (American) No. 30. — Observed at Bulacan December 17. Examination 

 of the blood positive for trypanosomata. Fifteen grams of arsenic sulphide given 

 by mouth; December 19, 5 grams of atoxyl; December 21, 20 grams arsenic 

 sulphide; December 23, 5 grams atoxyl; December 25, 20 grams arsenic sul- 

 phide: December 28, 5 grams of atoxyl. December 30 the animal suffered from 

 diarrhoea and no treatment was given; January 4, 15 grams of arsenic sulphide. 

 January S trypanosomata reappeared in the blood. The animal was given 5 

 grams of atoxyl; January 12, 20 grams arsenic sulphide. Diarrhoea and colic 

 developed. January 14, 5 grams of atoxyl; January 18, 20 grams arsenic sul- 

 phide; January 22, 5 grams atoxyl; January 24, 20 grams arsenic sulphide; 

 January 26, 20 grains arsenic sulphide: January 29, 5 grams atoxyl; January 

 31, 20 grams arsenic sulphide; February 3, 20 grams arsenic sulphide; February 

 5, 5 grams of atoxyl; February 7, 20 grams arsenic sulphide; February 9, 20 

 grams arsenic sulphide; February 14. 5 grains atoxyl; February 17, 20 grams 

 arsenic sulphide; February 19, 20 grams arsenophenylglycin. March 23 try- 

 panosomata reappeared in the blood, when 25 grams of arsenophenylglycin were 

 injected intravenously. The animal is still alive and free from parasites. 



Mule (American) No. 31. — Found positive for surra on microscopic examina- 

 tion on December 23 at Bulacan. December 23, 5 grams of atoxyl ; December 25, 

 20 grams arsenic sulphide; December 28, 5 grams atoxyl; December 30, 25 grams 

 arsenic sulphide; January 1, 5 grams of atoxyl; January 4, 20 grams of 

 arsenic sulphide; January 6, 20 grams of arsenic sulphide; January 8, 5 grams 

 atoxyl; January 10, 20 grams arsenic sulphide; January 12, 20 grams arsenic 

 sulphide; January 14, 5 grams atoxyl; January 17, 20 grams arsenic sulphide; 

 January 22, 5 grams atoxyl. The animal having been treated about one month, 

 treatment was discontinued until February 14. During this time the blood was 

 negative. February 14, the blood was found positive for trypanosomata, when 

 5 grams of atoxyl were given; February 17, 20 grams arsenic sulphide; February 

 19, 20 grams arsenophenylglycin. The blood has since been negative. 



Mule No. 32. — American mule found positive for surra by microscopic exam- 

 ination on December 19 at Bulacan, when 5 grams of atoxyl were given; 

 December 21, 20 grams of arsenic sulphide; December 23, blood positive, 5 grams 

 of atoxyl; December 25, 20 grams arsenic sulphide; December 28, 5 grams of 

 atoxyl; December 30, 5 grams atoxyl; January 1, 20 grams arsenic sulphide; 

 January 4, 5 grams atoxyl; January 6, 20 grams arsenic sulphide; January 8, 

 5 grams atoxyl; January 10, 20 grams arsenic sulphide; January 12, 20 grams 

 arsenic sulphide; January 14, 5 grams atoxyl; January 17, 20 grams arsenic 

 sulphide; January 22, 5 grams atoxyl. Treatment was then stopped, the animal 



