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 init. 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 
strongylusis 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 andass. Incalves 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 which the dogs slept was of the 
ordinary kind, and the usual attention had been paid to 
