178 



POULTRY PIlODlCrlON 



the sliell and a tliinner one next the white. Botli are com- 

 posed of matted organic fillers (more dehcate in tlie mner tlian 



Fig. S3 



Outer shell membrane (magnified). (Courtesy of Bureau of Chemistry ) 



Fig. 84 



Inner shell membrane (magnified). (Courtesy of Bureau of Chemistry.) 



in the outer layer), crossing one another in aU directions. At 

 the blunt end of the egg the two layers are sejiarated and 

 form an air chamber after the egg is laid. 



