.^< \ :.\ '../ \^i"\-^ v'Y-/^ ":'>v>"* .V • • ■" •• -^^ f" ■ • 





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FIG. 12 

 Structuie of protoplasm in the star-fish egg. A,' from the living object; B, the 

 same as it appears in sections. The star-like aster (sperm-aster) is connected 

 with the fertilization of the egg. 



