nrSKASES OF POl'LTKV. 



181 



carbolic solution, and when drj- sjii'inkled with in- 

 secticide powder and bedded with fresh straw. The 

 carbolic preparations should always be used in the 

 morning and the buildings thoroughh' ventilated dur- 

 ing the day so that the odor will not be so strong as 

 to be injurious to the birds at night. 



The treatment recommended above, if thoroughly 

 carried out, is sufficient to keep the troublesome ex- 

 ternal parasites either eradicated or under such con- 

 trol that the}^ will not prove injurious. For con- 

 venience various other methods have been devised 

 which are more or less effectual. Some throw dry 

 lime dust against the roof and walls of the buildings; 

 others fumigate by burning sulphur and leaving the 

 doors and windows closed for a few hours, there 

 being, of course, no birds 

 left inside at the time; still 

 others fumigate by placing 

 open bottles of bisulphide 

 of carbon about the poul - 

 tr}' -house. Aniseed is dis- 

 tasteful to most of the 

 vermin of birds, and is an 

 excellent remedy when 

 powdered and dusted into 

 the feathers, or when 

 strewn into the nest boxes. 

 A small quantity of the 

 essential oil mixed with 

 hot water renders this more effectual in destrojMug the 

 mites about the roosts, nests and other woodwork. 

 The essential oil may also be mixed with olive oil and 

 rubbed upon those parts of the birds most frequented 

 by lice; and in case of catarrh caused bj- the red mite 



F i <r. 45. — Dermaiivsxiis gallinte. 



Red mite. I M.Tirnified 75 diameters. 

 I'pper surface. 



