. Journal of morphology. 9 102 Figs. 97 to 102 Sixth cleavage (Stage 6) of Cryptobranchus 100 to 102 show upper hemisphere, equatorial view, and lower hemisphere,respectively, of the same egg. All of the figures are camera drawings from pre-served material. Figure 98 is drawn from the egg photographed for figure 7. 474 EMBRYOLOGY OF CRYPTOBRANCHUS 475 blastic tendency is strongly expressed. This stage is reachedabout four hours later than the beginning of the preceding stage. A description of a few individual eggs will best indicate thecharacteristics of this clea
. Journal of morphology. 9 102 Figs. 97 to 102 Sixth cleavage (Stage 6) of Cryptobranchus 100 to 102 show upper hemisphere, equatorial view, and lower hemisphere,respectively, of the same egg. All of the figures are camera drawings from pre-served material. Figure 98 is drawn from the egg photographed for figure 7. 474 EMBRYOLOGY OF CRYPTOBRANCHUS 475 blastic tendency is strongly expressed. This stage is reachedabout four hours later than the beginning of the preceding stage. A description of a few individual eggs will best indicate thecharacteristics of this cleavage. Out of about fifty eggs studied, the one represented in figure97 shows the greatest regularity of cleavage in the upper hemi-sphere. This condition must have been reached by a fairlyconstant alternation of vertical and latitudinal cleavage alternation of cleavage furrows carried out with complete-ness and geometrical precision would give a total of sixty-fourcells, consisting of forty-eight micromeres
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Keywords: ., bookcentury1900, bookdecade1, booksubjectphysiology, bookyear1912
