THE CANADIAN ENTOMOLOGIST. 239 



free use of these baths and the chances of infestation will be to a 

 great extent reduced. 



It will be found advisable also where brood hens are used to 

 set them on tobacco stems which may be obtained cheaply from 

 any cigar factory. The possibilities of infestation of the chicks 

 will thus be greatly reduced. 



4. — Carbolized Sweet Oil. 



Dusting young chicks will be found to be a difficult practice. 

 Where head lice are very bad on young chicks it may be found 

 necessary, however, to treat them. In this case a little carbolized 

 Sweet Oil may be rubbed into the infested regions. The oil, 

 however, must be used only in extreme cases and then very sparingly, 

 as its use in any quantity may endanger the life of the chick. 



A much surer method is to protect young birds from infestation 

 by thoroughly treating all old birds with which they may come in 

 contact. 



5. — Disinfection of Houses. 



If incubator and brooder-raised chicks are kept free from 

 contact with old birds during their development, and are then 

 placed in houses which have been thoroughly cleansed and dis- 

 infected, the danger of infestation is reduced to a minimum. Under 

 these conditions any old birds which must be introduced into the 

 house should, of course, be given two or three thorough dustings 

 before they are allowed to run with the young birds. 



Before the introduction of the young pullets the whole house, 

 nests, perches, walls and floor should be thoroughly scraped and 

 scrubbed and then well painted or sprayed with a mi.xture of 3 

 parts of Kerosene and 1 part of Crude Carbolic Acid 95%. This 

 ensures absolutely lice-free surroundings for the young birds and 

 also checks to a great extent, if it does not entirely eradicate, an 

 infestation of red mites if such be present. 



Following are the species of lice which are known to infest 

 the Domestic Fowl in Canada with brief descriptions to aid in 

 their identification. 



The Common Hen Louse (Menopon pallidum N.). 

 This louse is about .04 to .06 inches in length. The body is 

 compact, the head is long and the legs short. The abdomen 



