REMOVAL OF THORN-HEADED WORMS FROM SWINE 3 



Picric acid was given to one 9 to 10 months old pig in a dose of 0.5 gram. 

 Four days later the pig was given 1 gram in water, and the next day, 3 grams 

 in 40 per cent alcohol. The treatment was entirely ineffective. 



One 8 to 9 months old pig was given 15 grams of carbon disulphide in 

 100 grams of olive oil. The next day the pig received 25 c. c. of carbon 

 disulphide with 150 grams of olive oil. Four days later the pig was given 

 50 c. c. of carbon disulphide with 200 c. c. of oil. After seven days it was 

 given 100 c. c. of carbon disulphide with 100 grams of castor oil. The treatment 

 failed to remove any thornheads. 



Sodium arsenite in a dose of 0.1 gram in water given to one 8 to 9 months 

 old pig, followed the next day by 0.2 gram in water, and the following day 

 by 0.5 gram in water, of which 0.1 gram was lost in dosing, failed to remove 

 any thornheads. 



Naphthalene in a dose of 5 grams in oil given to one 8 to 9 months old pig, 

 followed in 6 days by 10 grams in oil, was entirely ineffective against thornheads. 

 Calomel, in a dose of 7 grams, was entirely ineffective in the removal of 

 thornheads from one pig after it had fasted 12 hours. 



One 8 to 9 months old pig was given 100 c. c. of glycerin and 1 gram of 

 ferric chloride with 400 grams of water. The next day the pig received 200 

 grams of glycerin, 2 grams of ferric chloride, and 300 grams of water. The 

 treatment failed to remove any thornheads. 



One 8 to 9 months old pig was given 100 grams of glycerin, 10 grams of 

 chloroform, and 200 grams of a 1 per cent solution of potassium ferrocyanide 

 without any effect on the thorn-headed worms. 



Lysol in a dose of 10 c. c. with 2 liters of flour paste failed to remove any 

 thornheads from one pig. 



Benzine in a dose of 50 grams, followed in six days by 100 c. c. in 300 grams 

 of olive oil, failed to remove any thornheads from one 8 to 9 months old pig. 



Potassium cyanide was given to one pig in a dose of 0.15 gram in 200 grams 

 of water and 20 grams of milk. Four days later the pig received 0.3 gram of 

 potassium cyanide in 200 grams of water. The treatment was entirely ineffec- 

 tive for thornheads. 



Balsam of Peru in a dose of 3 grams with 200 grams of olive oil given to 

 one pig fasted 24 hours was entirely ineffective in the removal of thornheads. 

 Powdered sulphur in a dose of 2 grams failed to remove any thornheads from 

 one pig. 



One 10-months old pig was given 1.7 grams of tobacco extract containing 

 8.5 per cent of nicotine in clay. Three days later the pig was given 5 grams 

 of the extract in 2 liters of clay. The treatment was without effect on the 

 thornheads. 



Tartar emetic given to one pig in a dose of 1 gram dissolved in water and 

 mixed with clay, followed in three days by 2 grams with water, milk, and soup, 

 failed to remove any thornheads. 



Borax in a dose of 2 grams in clay was without effect on thornheads. 

 Thymol in a dose of 4 grams with 1 c. c. of alcohol, 300 grams of water, 

 30 grams of glycerin, and 4 grams of sugar, failed to remove any thornheads 

 from one pig. 



Copper oxide given to one 8 to 9 months-old pig in a dose of 0.4 gram of clay, 

 this dose being repeated four days later, was entirely ineffective for thornheads. 

 Salicylic acid given to one pig in a dose of 5 grams in clay was ineffective 

 against thornheads. 



Bismuth subnitrate in a dose of 4 grams in clay was ineffective against 

 thornheads, as was vinegar in a dose of 100 c. c, and iodoform in a dose 

 of 0.4 gram given with egg. 



One 8 to 9 months-old pig was given 2 grams of powdered pyrethrum flowers 

 in the feed at 10 o'clock in the morning, and at 6 o'clock in the evening was 

 given 28 grams of the same product in meat broth. The treatment was 

 entirely ineffective. 



One pig was given 200 c. c. of a remedy containing 100 grams of petroleum ; 

 this was entirely ineffective in removing thornheads. 



In Wolffhugel's tests, turpentine was the only drug showing any 

 efficacy against thorned-headed worms; it removed one worm and 

 left a considerable number of others. The dosages of the drugs used 

 in the foregoing tests are generally rather high and in many cases 

 greatly in excess of the usual therapeutic dose. However, many of 

 these preparations are not considered as coming under the classifi- 



