File:Journal of morphology (1893) (14596183198).jpg

Identifier: journalofmorphol08wist (find matches)
Title: Journal of morphology
Year: 1893 (1890s)
Authors: Wistar Institute of Anatomy and Biology
Subjects: Morphology Physiology
Publisher: Boston : Ginn & Co.
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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Text Appearing Before Image:
. 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 form. Fig. 113. Double 4-celled form (transition to double 8-celled) showing remin-iscence of the normal form of cleavage in the lower right hand fourth. Fig. 114. Individual of similar type. Nearly normal form of cleavage in theupper half of each twin, double form in the lower half of each. Joiim. Morph. Vol Wf. PIXXWI.
Text Appearing After Image:
ij^. Wilson, del. B.Meisel lith.Boston . 636 WILSON. PLATE XXXVII. (Figs. 121 to 123, 126 to 130, from life ; the others from preparations. 270 diameters.) Fig. 115. Double 4-celled stage. Nearly equal type. Fig. 116. Transition from double 8-celled to double i6-celled stages, obliquelyfrom lower pole of each twin. Both of the unequal type. The axes form anacute angle. Fig. 117. Double 8-celled form, preparing for division. Both of the unequaltype. The axes at right angles. Fig. 118. Double 8-celled stage. Fig. 119. Double 8-celled form, preparing for division ; unequal type. Fig. 120. Double blastula, 3)^ hours. Fig. 121. Four-celled form, from isolated micromere of 8-celled stage. Fig. 122. Succeeding 8-celled stage (from another but similar specimen). Fig. 123. Succeeding i6-celled stage of the same individual; upper pole. Fig. 124. A similar form from the lower pole. Fig. 125. Closed ^ blastula, from shaken 8-celled stage ; 4 hours. Fig. 126. Four-celled stage from isolated macrom

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