] 174 



POULTRY PRODUCTION 



Fig. 87 



Appearance of a chick embryo after seventy-two hours in an incubator. 

 (Courtesy of Kansas Experiment Station.) 



Fig. S.S 



Embryo chick, ninety-six hours old, the wing and leg buds and the 

 tail fold showing plainly. The heart is still located outside the body. 

 Magnified. (Courtesy of Iowa Experiment Station.) 



