MINUTE ANIMAL LIFE. 
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this is the white, and within the white is the yolk, 
within the yolk the germ center, which is the basis of 
life. The yolk and the white are food stored up with 
the germ, upon which the undeveloped chick lives 
until the egg is hatched. 
Fig. 112.—Vorticella magnified. A, small, free-swimming in¬ 
dividuals conjugating with a large, stalked individual; B, 
a stalked individual dividing longitudinally; O, after di¬ 
vision is completed, one part severs itself from the other, 
forms a ring of cilia, and swims away. 
The ameba cell has no outer covering. Its outer 
part corresponds to the albumen or white of the egg; 
