Common Parasites 23 



hogs are to be admitted to the herd they should by all means be 

 isolated on some distant part of the farm for at least four weeks 

 and kept under close observation during all that time in order that 

 their freedom from parasites and diseases may be definitely ascer- 

 tained before allowing them to run with the other hogs. 



Various proprietary preparations are used for destroying lice. 

 In general, the coal tar dips and disinfectants are efficient when 

 used in 2 per cent solutions in spray pump or dipping vat. 



Texas crude petroleum may be used on rubbing posts, in spray 

 pump or in the dipping vat. The vat may be filled two-thirds full 

 of water and an inch or two in depth of the oil placed on the sur- 

 face. In dipping the hogs are covered with a thin film of oil which 

 closes the breathing pores of the lice and suffocates them. 



Kerosene emulsion is also recommended. It is made as follows: 

 Take two gallons of kerosene, one-half pound of laundry soap and 

 one gallon of water. Dissolve the soap in boiling water and add 

 this to the kerosene, stirring vigorously for ten minutes. 



This is "stock solution" and, when used, must be added to water 

 in the proportion of one gallon to nine gallons of water. 



Poisonous preparations are sometimes recommended for the de- 

 struction of hog lice but should not be used on account of the 

 danger of poisoning the animals. When good results can be ob- 

 tained with harmless substances it is useless to unnecessarily en- 

 danger the health or life of animals. 



Bill of Materials for Hog Dipping Vat. 



Material for forms. 



Posts, 2 by 4, 8 pieces 5 feet long. 



Posts, 2 by 4, 8 pieces 4 feet long. 



Siding, 1 by 12, 10 pieces 8 feet long. 



Siding, 1 by 12, 4 pieces 6 feet long. 



Siding, 1 by 12, 4 pieces 2% feet long. 

 Material for Cover. 



Posts, 12 fence posts 6 feet long. 



Splash boards, 1 by 8, 6 pieces 16 feet long. 



Rafters, 2 by 4, 2 pieces 16 feet long. 



Plates, 2 by 4, 2 pieces 16 feet long. 



Roof, 1% squares prepared roofing or 1500 shingles. 

 Material for Dripping Pen. 



Posts, 10 fence posts 6 feet long. 



Siding, 1 by 6, 20 pieces 8 feet long. 

 Material for Vat. 



Cement, 10% barrels. 



Sand, 3% cubic yards. 



Rock or gravel, 6 14 cubic yards. 



