It is not hard to remember thatfres/i eggs from 

 healthy hens, fertilized by vigorous cocks> MUST be 

 used if we are to hatch a large percentage of 

 strong, healthy chickens. 



Fig. i shows a strong fertile egg as seen in the 

 tester on the fifth or sixth day. B, the dark spot, 

 is the live germ ; A A, are the blood vessels extend- 



AN EGG TO BE DISCARDED 



On the fifth or sixth day. Weak or imperfectly fertilized, as 

 shown ou the fifth or sixth day. 



ing out from it. This germ B, is seen by placing the 

 egg against the aperture of the tester and revolv- 

 ing it between the thumb and ringer until the side 

 on which the germ has formed comes nearest the 

 eye. The spot B, will be seen plainly, often sur- 

 rounded by a small cloud, as shown ; the germ at 

 this time is quite lively, and can be seen to move 

 42 



