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The fertilizing cell, its varying form and behavior by Nelly Peery, 1890

The fertilizing cell, its varying form and behavior by Nelly Peery, 1890, Page 47

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45. outer covering of this consists of eight flat cells, forming eight shields: these have irregular edges, which fit together, and each one has a number of folds extending from the center to the margin giving them a radiate appearance. Attached to the center of each shield, (on the inner surface,) is a cylindrical cell, called a manubrium, which extends
 
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