4 6 



PO UL TR T- CRAFT. 



45. Incubator Cellars. A dry well ventilated cellar or basement is the 

 best place for an incubator. Machines can be run successfully in rooms 

 wholly above ground, but require closer attention because of greater and more 

 rapid variations in the temperature of the room. Where only one or two 

 machines are used they are oftenest kept in the cellar of the dwelling. In 

 case of fire this may invalidate insurance. It is better always to have a place 

 specially for incubators. On a large plant the incubator cellar is a necessity. 

 Various methods of constructing incubator cellars are shown in Figs. 24, 28, 

 34. In Fig. 29, are end and side elevations of an incubator cellar on the 

 plan most used where a building especially for incubators is constructed. 

 This diagram indicates an incubator room 7 to 8 ft. high at the sides. The 

 floor is about 3 ft. below the level of the ground, and the earth is banked to 

 the top of the wall. 



Fig. 29. Incubator Cellar End and Side Elevations. 



An incubator cellar need not be well lighted, but provision must be made 

 for thorough ventilation. The air must be kent pure. Usually this is 

 accomplished if the cellar has arrangements for ventilation about as in a 

 good dwelling house cellar ; but in a cellar where many incubators are used 

 it is found to be an advantage to make the roof high so that the supply of air 

 in the room will be ample. Nearly always the windows have double sash, 

 those outside hinged at the top, the inside ones hinged at bottom, so avoiding 

 direct draft on the machines when windows are open. 



46. Brooder Houses. The style of brooder house used will depend on 

 the system of brooding adopted. If the continuous pipe system is used, the 

 brooder house will, in its general features, resemble the long poultry house 

 with passage and single row of pens. Fig. 29 is an exterior view of such a 



Pijf . 30. Ground Plan of a Long Brooder House Pipe System single row of pens. 



