SUMMER CARE AND MANAGEMENT 169 



herbage to spring up and it gives parasitic germs 

 chance to die before finding again a living place in 

 the body of its former host. It is better then to 

 divide large sheep pastures into several divisions, 

 and during warm weather, say about the middle of 

 May till the middle of September, to change the flock 

 from one division to another, letting cattle or horses 

 follow them, or letting the pastures have rest till 

 the flock comes back again. 



It would not help matters any to keep sheep in 

 each division and change by transposition, a com- 

 mon and sinful practice, as one lot would readily in- 

 fect the other. It is not good management therefore 

 fully to stock a pasture with sheep in any part of 

 the United States east of a line running about with 

 the 100th meridian, or roughly along the western 

 limit of the cornbelt. The exception to this rule 

 would be in the case of high mountain pastures or 

 in the far north, where the air and soil are cool 

 enough to deter the spread of parasites. 



These stomach worms are not very hard to de- 

 stroy or drive out of the body of the sheep. .The 

 writer introduced the gasoline treatment into the 

 United States and it has given excellent results in 

 his practice. Coaltar creosote is said to be as good 

 and perhaps better. Some coaltar dips are used 

 successfully in destroying the stomach worm. We 

 will give explicit directions for administering these 

 remedies further on. It is enough here to empha- 

 size the absolute necessity for treatment of this kind. 

 The man who blindly ignores the reality of this dan- 



