

REMOVAL OF THORN-HEADED WORMS FROM SWINE / 



Fecal examination, November 16 to November 23, inclusive, showed 

 the following for each successive day: No worms; 3 ascarids; 1 

 thornhead; no worms the last four days. Total worms passed, 

 1 thornhead, 3 ascarids. 



The pigs were killed November 25 and showed the following 

 worms, upon post-mortem examination: 33 thornheads; 3 ascarids; 

 23 thornheads; 4 nodules but no thornheads; 6 ascarids; 43 small 

 ascarids; 50 thornheads and 12 ascarids; 12 nodules with 1 im- 

 mature thornhead. Total worms post-mortem, 107 thornheads, 64 

 ascarids. Efficiency against thornheads, less than 1 per cent; against 

 ascarids, about 4.5 per cent. 



POWDERED KAMALA AND KAMALA EXTRACT 



The other pigs were disposed of as follows: Two pigs were dis- 

 carded, as fecal examinations were negative for thornheads. One 

 pig died of hog cholera December 6, and the remaining pigs were 

 immunized against that disease. One pig was given 14 grams of 

 powdered kamala on November 17. Feces collected and examined 

 for six consecutive days showed no parasites passed. This pig was 

 killed December 5 and eight thornheads and several ascarids were 

 found. Kamala in this test was entirely ineffective against thorn- 

 heads and ascarids. 



On December 8 two pigs were each given 30 c. c. of kamala ex- 

 tract made as follows: To 45 grams of kamala 96 c. c. of carbon 

 tetrachloride was added and the solution allowed to stand for 48 

 hours ; it was then filtered. The filtrate of carbon tetrachloride and 

 the portion of kamala soluble in this solvent were given through a 

 stomach tube. Fecal examinations December 9 to December 15 5 

 inclusive, showed the following: No worms; 1 ascarid; no worms; 

 no worms; 1 thornhead. Total worms passed, 1 thornhead, 1 

 ascarid. 



The pigs were killed December 16. One pig had no parasites, but 

 showed eight nodules where thornheads had been attached. One pig 

 had 5 thornheads attached and 3 nodules; this latter pig had passed 

 the 1 thornhead and 1 ascarid. The drug was therefore 17 per cent 

 efficient against thornheads and 100 per cent efficient against ascarids. 



MAGNESIUM SULPHATE AND NICOTINE-SULPHATE SOLUTION 



On December 19 each of two other pigs, designated as No. 41 and 

 No. 43, was given 15 grams of magnesium sulphate in 250 c. c. of 

 water by stomach tube. Feed was withheld until after dosing the 

 next day, when each pig was given 120 c. c. of nicotine-suphate 

 solution made by adding 15 c. c. of a 40 per cent nicotine-sulphate 

 solution to 960 c. c. of water. This made about a 1.5 per cent solu- 

 tion, which was given with a stomach tube. The pigs showed no 

 symptoms of sickness after being dosed. Fecal examinations, Decem- 

 ber 21 to December 23, inclusive, showed for each successive day the 

 following: Pig No. 41; 1 ascarid; no worms; 1 thornhead; total, 1 

 thornhead, 1 ascarid. Pig No. 43; no worms; 3 thornheads; no 

 worms : total, 3 thornheads. 



The pigs were killed December 23. Post-mortem examination 

 showed the following: Pig No. 41, 2 thornheads and 3 ascarids; pig 



