Archive image from page 33 of The development of the frog's. The development of the frog's egg; an introduction to experimental embryology . developmentoffro00morg Year: 1897 18 DEVEiOPMENT OF THE FROG'S EGG [Cn. II to one pole of the spindle, and half to the other. The spindle has assumed, during this time, a radial position with respect to the egg, so that we may speak of a distal and of a proximal or central end (Fig. 11, A). The distal end pushes out into a protrusion of protoplasm that has simultaneously formed at this B i 1 r

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