38 
THE EOCKY MOUNTAIN SPOTTED FEVER TICK. 
The only precautions necessary are to see that live stock are not 
allowed to drink it and to avoid heating the animals either before 
•or after clipping. The dip can be used repeatedly until it becomes 
befouled by foreign matter. A reasonable estimate of the cost of 
preparing this dip in the valley is $0.0031 per gallon, or $6.20 for an 
amount sufficient to fill a vat of 2,000 gallons capacity. 
