ARTIFICIAL INCUBATION. V1 
of the incubator must be packed also. The incubator 
should be raised from the floor about an inch, when com- 
pleted, to allow the air to pass under and thence inte 
the ventilator tubes. 
The incubator being complete, the tank is filled with 
boiling water. It must remain untouched for tweaty- 
four hours, as it requires time during which to heat 
completely through. As it will heat slowly, it will also 
cool slowly. . Let it cool down to 110°, and then put in 
the eggs, or, what is better, run it without eggs for a 
day or two in order to learn it, and notice its variation. 
When the eggs are put in, the drawer will cool down 
some. All that is required then is to add about a 
bucket or so of hot water once or twice a day, but be 
careful about endeavoring to get up heat suddenly, as 
the heat does not rise for five hours after the additional 
bucket of water is added. The tank radiates the heat 
down on the eggs, there being nothing between the iron 
bottom of the tank and the eggs, for the wood over and 
around the tank does not extend across the dottom of 
the tank. The cool air comes from below in the ven- 
tilator pipes, passing through the muslin bottom of the 
egg-drawer to the eggs. The 15x30 inch tank incuba- 
tor holds 100 eggs. Lay the eggs in, the same as in a 
nest, promiscuously. 
In regard to the sawdust packing. The bottom board 
is wider than the ventilator. Each corner of this bottom 
hoard should be 2x3 well-fitted posts, the posts being 
six inches (or whatever height desired), higher than the 
three compartments (ventilator, egg-drawer, and tank) 
when the three are in position. To these posts fasten 
tongued and grooved boards, and you will then have 
the compartments enclosed with a larger box. Now fill 
in your sawdust (sides and top), covering the top saw- 
dust with the same kinds of boards, first boring a hole 
for the tube on top, or fitting the boards around it by 
