64 Accotm t of a large Species ofAscaris, 



Upon opening his abdomen, I found the worm partly 

 concealed by the liver, its ends concealed by the intes- 

 tines, while the rest of it lay naked to the view ! I was 

 much astonished, and much delighted, at this unexpected 

 sight ; and at once concluded, that I had discovered the 

 cause of the dog's convulsions. The worm possessed 

 a crimson colour, and was dead. It might have existed 

 in the cavity of the abdomen some time ; which is pro- 

 bable, as no perforation through the intestines could be 

 found. The intestines were much distended with liquids, 

 and, if it had made a recent passage, a portion of these 

 liquids might have run into the abdominal cavity. But 

 no liquids appeared there. Might not the worm have 

 changed its abode after the first exhibition of the medi- 

 cine, since it is offensive to simiUu' worms, according to 

 Dr. Rush and Dr. Fowler ? 



The morbid appearances, upon dissection, were the 

 following. The intestines and stomach were reddened, 

 more externally than internally ; gangrene had formed 

 in some parts of the intestines, and extensively in the 

 mesentery ; the intestines were full of liquids, as already 

 mentioned, yellowish, blended with the medicine. The 

 brain seemed watery ; water was in the ventricles, or 

 what resembled water. 



If I am not deceived, this worm is a variety of the 

 Ascaris vermicularis of Linnseus. But to determine its 

 genus and species, 1 leave to you. Your accurate and 

 extensive knowledge, in the science of Natural History, 



