64 BOARD OP AGRICULTURE. 



It is perfectly safe to saj that at least twenty-five sheep are 

 killed by parasites derived from dogs, for every one killed by 

 the teeth of dogs ! It is also safe to say that more than fifty 

 persons die from the same parasites, for every one that dies of 

 hydrophobia ! And yet this work of destruction goes on 

 silently and almost unobserved, except by professional men 

 week after week and year after year. The loss of human life 

 every year more than counterbalances all the good tliat all the 

 dogs in the civilized world can possibly do. In Iceland it is 

 stated that one-sixth of all the deaths are caused by one of 

 the dog-parasites {Echinococcus') . The same parasite occurs 

 also, not unfrequently, in all other parts of the world where 

 dogs are kept, and causes most horrible disease and death. 

 To this we may add the Pentastoma, which man also derives 

 from dogs, and in all probability several other parasites, in- 

 ternal and external. 



INTERNAL PARASITES OP THE CAT. 



CESTODES. 



Tcenia crassicollis Rud. Intestine, young in ruts and mice. 

 T. elliptica Batsch. Small intestine ; common. 

 T. canis-lagopodis Rud. Intestine; common in Iceland. 

 Biholhrium decipiens Diesing. Intestine, also in leopard, 

 ounce, etc. Perhaps Botliriocephalus felis Creplin. 



TREMATODES. 



Amphistoma truneatum Rud. 



Bistoma lanceolatum Mehlis. Bile ducts ; rare. 



NEMATODES. 



Tricliina spiralis Owen. Intestine, young in muscles. 

 Dochmius tuhceformis Dujadin. Duodenum. 

 OUulanus tricuspis Leuck. Intestine, and young in muscles. 

 AscarismysLaxRxxdi. Small intestine ; common. 



ACARINA. 



Pentastoma dentieulatum Rud. Cysts on liver, etc. 



This list includes all those that I have found recorded from 

 the house cat, but doubtless many others may occur. 



