Journal of morphology . .91. 100. Wilson, del. 634 WILSON. PLATE XXXVI.[All from preparations and the cell-connections hypothetical, except in Figs. 113, 114 ; 350 diameters.] Fig. 103. Half-sized 8-celled stage, from isolated ^ blastomere, exactly equaltype. The other twin (enclosed in the same membrane) is unequal, like Fig. 104. Figs. 104, 105. Half-sized 8-celled stages, with last. Unequal type. Fig. 105shows spindles of following division. Fig. 106. Double 2-celled stage, showing the effects of displacement in thesingle 2-celled stage. Fig. 107. Double 2-celled stag


Journal of morphology . .91. 100. Wilson, del. 634 WILSON. PLATE XXXVI.[All from preparations and the cell-connections hypothetical, except in Figs. 113, 114 ; 350 diameters.] Fig. 103. Half-sized 8-celled stage, from isolated ^ blastomere, exactly equaltype. The other twin (enclosed in the same membrane) is unequal, like Fig. 104. Figs. 104, 105. Half-sized 8-celled stages, with last. Unequal type. Fig. 105shows spindles of following division. Fig. 106. Double 2-celled stage, showing the effects of displacement in thesingle 2-celled stage. Fig. 107. Double 2-celled stage (in division). Axes of the twin embryos atright angles. Fig. 108. Double 4-celled stage, transitional form. The left side, as in thenormal entire ovum ; the right side shows the double form. Fig. 109. Double 4-celled form with slight obliquity of the axes. Fig. IIo. Double 4-celled form with parallel axes. Fig. III. Double 8-celled form with oblique axes. Fig. 112. Transition from normal i6-celled form to double 8-celled f


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