$80 DISEASES OF HORSES AND CATTLE, 



CHAPTER XXIX. 



INTESTINAL WORMS OF HORSES AND CATTLE. 



Although worms of the horse, mule, ass ami 

 cattle are sufficiently numerous as species, yet they 

 do not generally cause so much disturbance and 

 disease as they do in the case of the other domestic 

 animals similarly affected. Some veterinarians go 

 so far as to think that the study of worms is of 

 little importance; but I think I have seen suffi- 

 cient disturbance caused by these parasites to con- 

 sider the subject of some importance; but I shall 

 take up the reader's time by describing only thos« 

 which are likely to cause trouble in horses anil 

 cattle. 



Fig. 20 — The Round Worm (Ascaris Megaloce 

 phala). — This parasite inhabits the intestine of 

 horses and cattle and may be found in the stomach. 

 It is quite common in these animals. It closely re- 

 sembles the common earthworm in form and gen- 

 eral appearance in all respects but color, which 

 is a pinkish white. It grows to a large size, the 

 male being from ten to twelve inches long and the 

 female twelve to fifteen. The largest one I ever 

 found was fifteen and one-half inches long and 

 half an inch in thickness in its middle; this worm 

 had a greenish tinge. The mouth is surrounded 

 by thin, large, very prominent lobes or pipille, 

 In the male the tail is provided with wing-like 



