ENEMIES AND DISEASES OF POULTRY 169 



diluted with 2 parts of kerosene oil when used for this 

 purpose. Roost poles may also be satisfactorily painted 

 with a wash made up of equal parts of creosote and 

 hot water. When roost poles and nest boxes are treated 

 with this mixture, they should be allowed to dry in 

 the sun before being put back in the house; when the 

 roost poles are put back in the house their ends should 

 be painted with a coat of the undiluted thick creosote. A 

 mixture of 2 l / 2 gal. of creosote, 2^ gal. of water, and 1 Ib. 

 of washing soda will also make an effective wash for 

 nests, roosts, and brood coops. If this is used hot and 

 applied in a spray, its effectiveness will be increased. 



After a house has been thoroughly freed of parasites, 

 the roost poles and the interior of the nest boxes should 

 be coated with one of the above mixtures of creosote 

 once a week for a month, and occasionally thereafter. 

 This work should always be done before noon so that 

 the creosote will have time to dry before night. 



Crude petroleum is an inflammable oily liquid from 

 which a number of other oils that are used for com- 

 mercial purposes are obtained by processes of refining. 

 It is also called coal oil, earth oil, mineral oil, natural 

 oil, rock oil, and Seneca oil. Crude petroleum is a dark 

 brown to greenish liquid. 



Kerosene is an inflammable oil distilled from crude 

 petroleum or any mineral hydrocarbon. Kerosene is 

 suitable for spraying the interior of poultry houces, but 

 is not well suited for applying to the bodies of fowls. 

 Inflamed eyes, blisters, and sore spots on the skin 

 will result when kerosone is applied direct. It is abso- 

 lutely unfit to use on the bodies of young chicks. 



Benzine is a colorless, inflammable, and volatile liquid 

 obtained from distillation of crude petroleum. While 

 it is often used as an insecticide, it is dangerous to 

 handle because of its inflammability. 



Gasoline is also a colorless, volatile, and inflammable 

 liquid obtained from the distillation of crude petroleum. 

 It is dangerous to handle for the same reason that 

 benzine is dangerous. 



