208 DE. T. S. COBBOLD ON TRICHIKA SPIRALIS. 



rate worm feedings with the flesli of the trichinized terrier-dog 

 were administered to a crow. The bird was killed some months 

 afterwards and sent to me for examination. Its muscles were 

 entirely free from Trichinae. 



Exp. 17. From the 9th to the 17th of June, inclusive, seven 

 separate worm feedings were administered to a pig. One of the 

 " feedings" was with the trichinized guinea-pig's flesh, the others 

 from the dog. This animal was not destroyed until the 4th of 

 April, 1866, when all the muscles which I examined were found 

 extensively infested with Trichinae. There were probably not less 

 than 16,000,000 present, all being alive and enclosed within per- 

 fectly-formed capsules, none of which latter exhibited any traces 

 of calcai-eous deposition. 



Exp. 18. Eour separate " feedings " with trichinous dogs'-flesh 

 were likewise, at the same dates as the foregoing, administered to 

 a rat. This experimental animal, however, like the one previously 

 mentioned, contrived to make its escape. I fear it was well 

 trichinized. 



Exp. 19. About the same date trichinous " feedings" were given 

 to a black puppy (bred at the Veterinary College) . The dog was 

 killed on the 18th of August, 1806, having also been made the 

 subject of an echinococcus feeding, when I found abundance of 

 encysted Trichinae within the voluntary muscles. 



Exp. 20. Four separate worm feedings with the flesh of the 

 trichinized guinea-pig were given to a sheep on the 15th, 16th, 

 17th, and 19th days of June, 1865. The experimental animal 

 was destroyed on the 29th of the same month ; but the result was 

 negative. 



Exps. 21 and 22. " Feedings " with the guinea-pig's flesh — four 

 in the one case and three in the other — were also administered by 

 Mr. Simonds (from the 15th to the 19th of June, inclusive) to a 

 chicken and a goose respectively. These birds were destroyed 

 some months afterwards and sent to me for examination ; but the 

 most careful scrutiny failed to detect any Trichinae within their 

 muscles. The goose was cooked and eaten without the slightest 

 hesitation. The chicken I found too tough for consumption. 



Exp. 23. On the 28th of March of the present year, I obtained a 

 small quantity of muscle from a highly trichinized Grerman sub- 

 ject, who died, from the eflfects of an accident, at the London 

 Hospital the day previous. The case is fully reported by Dr. 

 Thudichum in a new journal called ' Scientific Opinion ' (No. 4, 

 April 25, 1866, p. 55). Dui'ing the same day (at 2.30 p.m.) I 



