the back wall of the house is matched lumber lined with paper, and is sheeted again 

 on the inside. This is done in order to make a warm roosting coop, which ie pro- 

 tected at night in front by canvas curtains. 



The third house is the warmest house of the four and is built of matched 

 lumber and lined with paper. There is a dead air space between the inside and 

 outside walls. The building is made as tight as possible, the windows, doors, etc., 

 all being made to fit tightly. 



Many houses built on this plan are moist inside. To do away with the 

 moisture we have a straw loft. The straw is placed on boards, which are from four 

 to six inches apart. These boards are placed on a level with the roof or ceiling. 

 The straw absorbs the moisture and keeps the house dry. 



The fourth house is one of the extremely airy ones, being made of boards that 

 are dressed on one side and the cracks battened; about half of the front is open to 

 the weather, but may be closed on stormy days by large doors. There is not any 

 special protection for the roost, the chickens roosting in this house in exactly 

 the same temperature as they worked in during the day. This house, needless to 

 mention, is much cheaper than the other styles. 



The following record shows in a concise form the difference in the percentage 

 of egg production in favor of the cold or fresh air house during the five years for 

 the months of December, January, February and March, the first year beginning 

 December, 1904-05, 76 per cent.; 1906, 8 per cent.; 1907, 11.8 per cent.; 1908, 15.6 

 per cent.; 1909, 12.4 per cent. 



Fig. 5. 



The house with the cloth front and the one with the movable windows compare 

 favorably with the cold house. There is probably not enough difference in the 

 actual egg production to warrant a statement that either of these houses is very 

 much inferior to the cold house. They are about three degrees warmer than the 

 coldest house and about fifteen degrees colder than the warm house. 



