54 THE INTERNAL PARASITES OF 



digestible. On the other hand, a few honestly stated 

 that they really preferred their meat "just warmed 

 through," which was almost tantamount to saying that 

 they ate it absolutely raw. 



Obviously, this uncivilised attitude of the human bearer 

 is precisely that which forms one of the principal factors 

 ■concerned in, and therefore the most conducive to, the 

 welfare and propagation of the tapeworms. 



Having due regard to practical issues, quite apart from 

 those already set forth in connection with my account 

 of the beef measle, it will be advisable to return to the 

 subject of diseased meat again ; and I may add that the 

 somewhat unpalatable statements, which in the interests 

 of truth it will yet be my duty to make in this matter, 

 will acquire all the more cogency if they are associated 

 with my description of the parasitic diseases of sheep. 

 Meanwhile, the facts relating to certain other bovine 

 entozoa must necessarily engage our attention. 



In addition to the beef measle, three other forms of 

 tapeworm larva? are liable to take up their residence 

 within the flesh of the ox. All of them are likewise 

 guests of the sheep, in which last-named host they are 

 destined to play a more conspicuous part in the produc- 

 tion of disease. In so far as they may be considered as 

 bovine entozoa, I shall reduce my present notice of them 

 to the briefest possible limits. 



It is the custom with veterinarians to speak of all the 

 larger kinds of bladder worms as hydatids. This want 

 of discrimination has naturally introduced much confusion 

 into the literature of the subject. It has also prevented 

 the diffusion of correct ideas respecting the mode of 

 origination of the several and totally distinct species of 

 parasites that are thus incongruously blended under a 



