. Journal of morphology. 183 184 185 Figs. 180 to 185 Antero-dorsal views of embryos of Cryptobranchus alleghe-niensis in Stage 15. Camera drawings finished under binocular, from preservedmaterial. Figure 182 is drawn from the embryo photographed for figure 234;figure 184 is drawn from the embryo photographed for figure 233. X 6. of the embryo involves a noticeable increase in the antero-poste-rior dimension of some of the neuromeres. Stage 15: {figs. 180 to 189; 233 and 234). This stage is reachedabout eighteen hours later than the beginning of the precedingstage. In the following account, ea
. Journal of morphology. 183 184 185 Figs. 180 to 185 Antero-dorsal views of embryos of Cryptobranchus alleghe-niensis in Stage 15. Camera drawings finished under binocular, from preservedmaterial. Figure 182 is drawn from the embryo photographed for figure 234;figure 184 is drawn from the embryo photographed for figure 233. X 6. of the embryo involves a noticeable increase in the antero-poste-rior dimension of some of the neuromeres. Stage 15: {figs. 180 to 189; 233 and 234). This stage is reachedabout eighteen hours later than the beginning of the precedingstage. In the following account, each neuromere is designated bythe number of the groove bounding it on the posterior 1 and 2 have usually coalesced; neuromere 4 dis-appears during this, if not in the preceding stage. More definiteswellings now occur in neuromeres 1, 2, 3 and 5; the region betweenGrooves 5 and I is less clearly segmented and is usually somewhatdepressed. The outlines of the neural folds in the head region. 516 BERTRAM G. S
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Keywords: ., bookcentury1900, bookdecade1, booksubjectphysiology, bookyear1912
