32 The Management and Diseases of the Dog. 



(more especially Case 4) the whole mucous membrane of 

 the affected part appeared rough and irregular,as if ulcerated, 

 and innumerable parasites lay upon and in it. The mature 

 females could easily be distinguished, not only by their 

 larger size, but by the opaque whiteness of their bodies. 

 The majority of the female worms examined were im- 

 mature, and did not contain developed ova. The males 

 were not nearly so numerous as the females. Forms inter- 

 mediate between the adult worms and the young embryos 

 (some of which, as already mentioned, existed free in the 

 mucus) were not met with. 



"The occurrence in the bronchial tubes of the lower 

 animals of nematoid worms belonging to the genus 

 strongylus is by no means uncommon. Owing to the irrita- 

 tion caused by their development in the mucous mem- 

 brane an inflammation of the tubes is produced, hence the 

 affection is known by the names of parasitic or verminous 

 bronchitis, popularly called ' husk ' or ' hoose.' It is not 

 altogether unknown in man, but very few instances are on 

 record. Infesting the domestic animals there are three 

 well-recognised species of strongylus : the S. filaria of the 

 sheep and goat ; S. paradoxus of the pig ; and S. micrurus 

 of the calf, more rarely of the horse and ass. In calves and 

 lambs parasitic bronchitis often constitutes a serious and 

 fatal epidemic, so much so that in the latter it goes by the 

 name of the lamb disease. So far as I know, no epidemic 

 of the kind has been noticed in Canada. The species I 

 have here described differs in several particulars from either 

 of the above mentioned, and is most probably new to 

 science. 



" The origin of the epidemic must, I am afraid, like that 

 of so many other diseases, remain obscure. We have abso- 

 lutely nothing to aid us in forming an opinion on the sub- 

 ject. There had been no change in the locality nor in the 

 food. The straw upon v/hich the dogs slept was of the 

 ordinary kind, and the usual attention had been paid to 



