130 



The Hen at Work 



shell. In its finished stage it passes out at the 

 lower end a complete egg. The illustration shows 



Ovary and oviduct. The eggs gather and develop in the ovary. 



One by one they enter the oviduct, forming their shell and 



complete size as they descend. The progress through 



the oviduct takes about twenty-four hours 



the egg, soon to be laid, near the lower end of 

 the oviduct. 



The male germs are found in the upper part of 

 the tube, and almost as soon as the yolk enters 

 they attach themselves to the germinal spot on its 



