114 THE CORNING EGG FARM BOOK 



After closing the incubator on the i8th day it is not 

 opened again until the chicks are removed on the 226. 

 day. 



To open the door and reach in to assist some chick 

 out of difficulty means allowing the moisture to es- 

 cape, and, while the one individual which was seen to 

 be in trouble might be rescued, by the lack of moisture 

 in the egg chamber, many others would be held fast 

 in the shell. 



Cover Glass Doors 



When the chicks begin to hatch we make it a prac- 

 tice to throw a cloth over the glass door, so as to pre- 

 vent the youngsters crowding toward the light, and 

 piling up on top of each other, either in the egg trays 

 or in the nurseries below. 



All Good Chicks Hatch in 20 Days 



Many people have an erroneous idea in regard to 

 the time required for hatching. If the temperature 

 has been carried at a correct point during the entire 

 period the eggs will begin to pip on the afternoon of 

 the 19th day, and the morning of the 20th day should 

 find the youngsters coming out of the shells like 

 Pop Corn over a hot fire if the eggs have been of 

 proper strength, but on the morning of the 21st day 

 the hatch should be completed. Generally speaking, 

 chicks which hatch later than the 21st day are weak, 

 and while they may come along for a time, when 



