TEXAS FEVER. 495 



emulsions of the same may be applied by means of an ordinary pail 

 spraying pump. (Fig. 5.) 



Dipping in a vat is on the whole the best and cheapest method of 

 treating cattle for the destruction of ticks. 



Dipping in a vat. — Farms and pastures may be freed of ticks by 

 treating all cattle regularly every two to three weeks with an effective 



Fig. 5. — Pail spraying pump for small herds. 



tick-destroj'ing agent. If the treatment is applied with such suc- 

 cess as to destroy all ticks that reach the cattle from time to time, 

 thus preventing any engorged females from dropping on the pasture 

 after the beginning of the treatment, the pasture will become free 

 of ticks after the same period of time has elapsed as would have been 

 required if all animals had been excluded, beginning on the same 

 date; that is, a perfectly successful treatment would be practically 



