AN INCUBATOR HOUSE 15 



should have a one foot tread and a fall of one foot, then 

 there will be four of them. Loose boards three feet long 

 and one foot wide can be placed on the clay, thus forming 

 stairs at little cost. 



In throwing out the dirt care must be taken to throw it 

 well away from the hole so as not to interfere with the car- 

 penter work. If the soil is damp when the cellar is dug, 

 it is well to leave it open to the sunlight for a few days 

 to thoroughly dry it out before putting on the roof. 



The Lumber Required. 



The next thing in order is to buy the lumber. As this 

 is to be built as cheaply as possible do not buy a foot of 

 lumber that does not enter into actual construction. Fol- 

 lowing is a bill of the lumber, etc., required. 



4 pieces 2 x 12, 10 feet long. 



4 pieces 2 x 12, 12 feet long. 



1 piece 4 X 4, 8 feet long. 



9 pieces 2x4, 12 feet long. 



1 piece 2 X 6, 12 feet long. 

 15 pieces 1 x 12, 12 feet long. 



3 pieces of 8-inch flooring (for door). 



8 pieces 1 x 12, 10 feet long (for ventilators). 



2 three-light windows with 8 x 10 glass. 



2 lbs. 20-penny spikes. 



3 lbs. 10-penny nails. 



1 pair of large strap hinges. 



2 pair small butt hinges. 



Constructing the Wood Work. 



Saw the 4x4 into four pieces each two feet long. With 

 these and the plank build a rectangular box 10 x 12, two 

 feet high, as shown in Figure I. This must be made with 

 square corners and when finished be leveled up by placing 

 small pieces of board under the low places. Figure II 

 is, in part, a longitudinal section of Figure I. The drawings, 

 I and II hardly require explanation and the frame may be 

 built with little trouble. 



Now take the 2 x 6 and place it in the: center and one and a 

 half feet above the frame just made. Support it tempo- 

 rarily, then measure and cut the 2x4, pieces for the rafters 



