Hatching with Incubators 145 



All eggs showing this dark germ at about the 

 center of the yolk, with the red lines running out 

 like spiders' legs, are probably fertile and doing 

 well. They should be laid back in the tray. 



An infertile egg will show no dark spot at all, 

 but will be clear, except for the cloudy shadow 

 of the yolk, which will appear in a strong light. 

 These infertile eggs are not spoiled by staying six 

 days in an incubator, and may be used in cooking, 

 or may be kept cold, and boiled hard to feed the 

 chicks when they are bom. 



Eggs which show a dark spot without radiating 

 lines floating about in a cloudy patch are those in 

 which the germ began to develop and died. Many 

 germs lack vitality to continue their development, 

 and die after a few days. Sudden chills, or over- 

 heating also cause early death. 



A bright red circle or half-circle, or dark spot, 

 seen against the shell, shows a dead germ, probably 

 kiUed by improper turning. 



All eggs showing the dead floating germs, the 

 red rings, or the spots on the shell, should be dis- 

 carded, as they are unfit for use. 



There will be other eggs which seem to fit into 

 none of these descriptions. They do not show the 



