PREVENTION OF INTESTINAL WORMS. 165 



development I know nothing, except from analogy with the 

 nematoid worms in general, to which order they belong, and whose 

 development I have described at pages 160, 161. 



PREVENTION OF INTESTINAL WORMS. 



I have already shown from the experiments of foreign 

 observers, that all the intestinal worms in the dog are incapable 

 of being propagated within his body, with the exception of the 

 maw-worm, of whose development I have not been able to obtain 

 an account. The tape-worms can only procure an entrance with 

 his uncooked food, or from this being placed in vessels which 

 have not been properly cleansed since they contained it when in 

 a raw state. This I am led to believe is one means by which the 

 tape-worm is introduced into the intestines of the dog, for there 

 are now few coursers who feed their greyhounds upon raw food ; 

 and there can be no doubt that the heat of boiling, frying, or 

 baking destroys animal life in any stage, whether ovum, embryo, 

 or mature worm. Kennel-men should therefore be as particular 

 as dairy-women in scalding out the vessels from which greyhounds 

 are fed, and also those in which the food is stored after it is 

 cooked. It is a common practice to deposit trotters, paunch, or 

 other kind of food, after it is cleaned and before it is cooked, in 

 the same vessel which is afterwards used for storing it; and when 



