THE RELATIONS OF ARACHNIDS TO MAN 



123 



FIG. 68. Plan which will eradicate the Texas-fever tick from pastures. (After 



Graybill.) 



against the grass blades or weeds to which the young ticks are 

 clinging, the ticks fasten themselves to the bodies of the animals 

 and begin to suck their blood. During this process parasites 

 from the tick's body are transferred to the blood of the cattle. 



