Southern Cattle Tick 339 
Ticks are very resistant to efforts made to destroy 
them; it is with difficulty that they can be killed with- 
out injuring the animal to which they are attached. 
The most effective treatment is to dip the cattle 
every fourteen days in an arsenical dip, made as follows: 
Sodium carbonate (sal soda) ..............0.. 24 pounds 
Arsenic trioxid (white arsenic)................ 8 pounds 
PIM@ stad fades Pash oe che egy casscaiacd bear o eeubeaene 1 gallon 
Water sufficient to make 500 gallons. 
To prepare the dip, place 30 to 40 gallons of water 
in a cauldron or tank and bring to a boil. Add the 
sodium carbonate and dissolve by stirring, then add the 
arsenic and dissolve in the same manner. Draw the 
fire and add the pine tar in a thin stream, and stir well 
at the same time. This strong dip should be diluted 
to 500 gallons before using. 
Cattle should not be driven far or exercised violently 
just before dipping, nor for a week afterward. They 
should be watered just before dipping. After dipping, 
they should stand and drain where the dip will run back 
into the vat, and not poison grass or collect in pools 
where animals may drink it. Remember, this dip is 
poisonous when taken internally. This dip can be 
applied with a spray pump, or, where only a few are to 
be treated, washed by hand. 
It should be remembered that the cattle get ticks from 
infested pastures, and that to prevent their having ticks 
or becoming reinfested after dipping, they should be 
kept from such pastures. The discussion of the Texas 
cattle fever itself will be found in Chapter XVI. 
