PREPARING POULTRY PRODUCTS 495 



warm, dry atmosphere, or Ijy liokling for an extended time 

 under quite favorable conditions. 



3. Watery Eggs. — Tlie watery egg is quite similar to the 

 heated egg, save that in addition tlie inner sliell membrane 

 has become ruptured at the large cud of the egg, allowing the 



Fig. 2:iS 



Fertile egg allowed to die after thirty-six hours of incubation, showing 

 slight blood ring. (Courtesy of Bureau of Animal Industry.) 



contents to escape into the space occupied by the air cell, 

 giving a movable air cell. 



4. Liver Spots. — Somewhat frequently the rupture of a 

 bloodvessel in the oviduct or the sloughing off of a piece of 

 tissue or membrane causes the appearance of foreign matter 



