112 The Essentials of Poultry Raising 



will take about two quarts of plaster. If "Black Leaf 40" can 

 be secured or any pure nicotine such as is used by florists, add 

 fifty drops to four ounces of gasoline and mix with plaster of 

 Paris, as above, and pass through a fly screen. This latter makes 

 a much better mixture and will take about one quart of plaster. 

 Commercial insect powder can be purchased, but one should 

 make sure that it contains at least one-fourth of one per cent 

 of free nicotine. 



312. Scaly Leg. Scaly leg is due to a scab-producing parasite. 



313. Appearance of Scaly Leg. In scaly leg the affected shank 

 is covered with thick scales. The parasites are found under these 

 scales where tbey multiply. 



314. How Scaly Leg Spreads. Scaly leg spreads from the 

 introduction of an affected hird into the flock or from the 

 placing of birds in quarters where scaly leg birds have been 

 kept. 



315. What to Do for Scaly Leg. Saturate the shank once 

 every ten days with kerosene. Saturate the perch poles with 

 kerosene or carbolineum. 



316. Fleas of Chickens. The most common flea is the stick- 

 tight flea. 



317. How the Sticktight Flea Attacks the Bird. The stick- 

 tight flea attaches itself to the skin of the head and upper part 

 of the neck. 



318. How the Sticktight Flea Multiplies. The sticktight flea 

 multiplies by laying eggs which fall off and hatch on the ground. 

 Sandy localities furnish the most favorable place for the multi- 

 plication of this flea. 



319. What to Do for Birds Infested With the Sticktight Flea. 

 Dip the neck in kerosene. Do not get the kerosene in the eyes 

 of the bird. Lard mixed with a small amount of sulphur may 

 be applied to the infested parts. 



