342 INSECTS AFFECTING STOCK AND POULTRY 



host to which it may attach itself. After this is accomplished 

 it undergoes several moults, and finally drops to the ground, 

 the fertilized females engorged with blood. These lay enormous 



Fia. 347. Rocky Mountain spotted fever tick. Much enlarged. (After Cooley, Mont. Bull .) 



numbers of eggs, as above stated. The disease may be trans- 

 mitted through the eggs to the next generation of ticks. The life 

 cycle of the North American fever tick is illustrated in figure 346. 



Control of Texas 

 Fever Tick. If cattle 

 are kept out of the pas- 

 tures they naturally es- 

 cape attack, and most of 

 the young ticks will 

 starve for lack of food. 

 A four- or five-year pas- 



FIG. 348. The bee moth. 



FIG. 349. Larva of bee moth. 



ture rotation is also advised in the following order: Corn, spring 

 oats, hay meadow, pasture (Tenn. Bull. No. 81). It is claimed that 

 this will rid a farm of ticks. Application of oil to newly infested 

 stock is also practiced, the material being applied with spray pump, 



