10 BULLETIN 48, HAWAII AGRICULTURAL EXPERIMENT STATION. 
The dipping vat. — The dipping vat is not recommended for use 
unless large numbers of hogs are to be maintained and are especially 
subject to vermin. 
Fig. 9. — Hog fence of woven wire with strand of barbed wire at top. Portable hog 
cot in background. 
Pig. 10. — Tamped earth wallow in pasture. 
Rubbing posts. — An effective and cheap method of controlling hog 
vermin is that of placing burlap or other heavy cloth sacking, satu- 
