Archive image from page 49 of The development of the frog's. The development of the frog's egg; an introduction to experimental embryology . developmentoffro00morg Year: 1897 34 DEVELOPMENT OF THE FKOG'S EGG [Cii. IV If a series of sections be made throiig-li the egg at different stages ill the i)roeess of eleavage, we should see that prior to the division o( cdvh bhistoniere the nneknis had divided into two jiarts. This takes phice by the ordinary process of indirect

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