104 



THE INTERNAL PAEASITES OF 



These illustrations are reduced copies from figures 

 given in my general treatise on the Entozoa. 



It is a fortunate circumstance that this destructive 

 little tapeworm is comparatively rare in England. It 

 is the smallest cestode infesting the dog, and the one 

 most likely to be overlooked. 



Every year, notwithstanding its rarity, this little 

 canine entozoon, by means of its larvse, claims the lives 



Fig. 23. Group of Echinococcus-Heads 



of scores, or it may be hundreds, of persons in this 

 country; but, with all England's wealth, I do not 

 suppose a dozen people could be found who would be 

 prepared to sacrifice a few pounds each for the purpose 

 of promoting an investigation, the results of which would 

 be eminently conducive to public health, and most 

 certainly help to diminish our annual mortality. At the 

 same time such a research would inevitably tend to lessen 

 the amount of, if it did not altogether put an end to 



