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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 55

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53. of the spermatozoids, enclosed in its sac: it is an enlarged cell from the central part of fig 5. These spermatozoids keep up a constant motion, whirling round and round, within their sacs, and after they escape, moving about rapidly through the water. The archegonia are borne similarly to the antheridia, but there are fewer of them on a stem: they consist
 
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