THE DISEASES OF SHEEP 329 



sheep and pass out, laden with eggs about to hatch. 

 The little worms do something, we do not know what, 

 to get back into the sheep again. Probably they 

 crawl up a little way on the grass. The lambs come 

 along and nibbling close on tender grass where the 

 ewes' excrements have been dropped take in the 

 worms. They mature in the lamb and raise havoc 

 there as we have said. 



Fortunately cold weather either numbs or de- 

 stroys these worms so that there is no danger of 

 infection in winter, late fall or early spring. 



Elsewhere, in management, the prevention of 

 stomach worms is described. Here we will concern 

 ourselves with the cure of afflicted lambs. The 

 writer has dosed hundreds. For a number of years 

 he has on the same farm had no cases to doctor. 

 Moral: there is something in management. But 

 there is something in cure also. Therefore the 

 writer appends parts of bulletin of the U. S. Bureau 

 of Animal Industry prepared by B. H. Eansom, 

 March, 1907. The writer has faith in the gasoline 

 treatment and was the first man in America to ad- 

 minister it. His brother has had better success 

 with carbolic acid than coaltar creosote, using 12 

 drops for a mature sheep, given in milk. The bul- 

 letin follows: 



The stomach worm of sheep, known to zoologists 

 as Hsemonchus contortus, is generally recognized as 

 one of the most serious pests with which the sheep 

 raiser has to contend. Sheep of all ages are sub- 

 ject to infection, and cattle and goats as well as 



