Il8 RESEARCHES IN HELMINTHOLOCxY AND PARASITOLOGY. 



Structure of soft cancer, as usuall)^ described, being composed of large 

 nucleated cells in great variety of form. Dr. L. stated that, after 

 having dined on part of the turkey, on making inquiry for the miss- 

 ing liver, the cook had given information that in consequence of the 

 ' ' white lumps in it, it had not been cooked." On procuring it from 

 the slops, it was found to be in the condition described. Dr. L. took 

 the opportunity of expressing the opinion that an unnecessary degree 

 of alarm had been created in the community in relation to what were 

 considered to be diseased meats, especially such as are infested with 

 parasites. While he most decidedly recommended the avoidance of 

 the flesh of diseased or unwholesome animals, he thought that all 

 parasites would be destroyed by thorough cooking. 



In answer to a question from one of the members, whether he had 

 noticed Trichina in pork. Dr. L. observed that he had been the first 

 to discover this parasite in the hog, the discovery having been made 

 twenty years ago, as may be seen by referring to the Proceedings of 

 this Academy for October, 1S46, pages 107, 108. This notice had 

 attracted the attention of the German helminthologists, as proved 

 by reference to Diesing's Systema Helminthum, vol. ii, page 114, 

 and Leuckart, Untersuchungen v. Trichina spiralis, pages 6, 18. 



[March, 1866.] 



The circumstances under which the Trichina had been first de- 

 tected in pork were on an occasion when Dr. L. had dined on part 

 of the infested meat. While eating a slice of pork he noticed some 

 minute specks, which recalled to mind the Trichina spots seen in the 

 muscles of a human subject only a few da^-s previously. Preserving 

 the remainder of the slice, on examination of it microscopicall}- he 

 found it full of Trichina spiralis, but the parasites were all dead from 

 the heat of cooking. In conclusion, Dr. ly. observed that all meats 

 were hable to be infested with parasites, but that there was no danger 

 from infection if the meats were thoroughly cooked, for he had sat- 

 isfied him.self by experiment that entozoa are destroyed when sub- 

 mitted to the temperature of boiling water. 



[October, 1868. No. 297. See Bibliography.] 



NOTICE OF SOME AMERICAN LEECHES. 



Having been invited by Mr. R. H. Lamborn, secretary- and treas- 

 urer of the Mississippi and Lake Superior Railroad Company, to 

 join an excursion to Minnesota and Lake Superior the last summer, 



