PREPARING POULTRY PRODUCTS 



499 



Spots. — Eggs in wliicli mould or hacteria has developed 

 in isolated areas inside the shell arc called "spots." They 

 are not fit for foorl. Eggs in which the yolk has adhered to 

 the shell are also classed as si)ots, ])eing known as stuck 

 spots. These eggs are unfit for food, but may he used for 

 tanning purposes. 



Fio. 242 



Fertile c^ 



; after seven (la\'s of incubation. 

 Animal Industry.) 



(Courtesy of Bureau of 



Blood Rings. — Fertile eggs in which the embryo has so far 

 developed as to show considerable blood and then died, the 

 blood is usually left in a more or less imperfect circle sur- 

 rounding the germ. Before the candle this appears as a ])ink 

 ring which from its nature has given the name "blood ring" 

 to eggs containing dead germs. These eggs are declared 



