. The anatomical record. Anatomy; Anatomy. 6 Fig. 4 A specimen of cauda bifida demonstrating the asj-mmetry of the tails. In this egg the rays had struck a portion of yolk farthest removed from the equa- tor. The tails are provided, as is shown, with peculiar toe-like processes on their free extremities. Fig. 5 In this tadpole the right tail encountered the body axis at an acute angle directed anteriorly. Two yolk plugs are to be seen, and the same splitting of the extremity of the left tail as was noted in figure 4. Fig. 6 The lines 7 and 8 on this cauda bifida tadpole indicate the level of t
. The anatomical record. Anatomy; Anatomy. 6 Fig. 4 A specimen of cauda bifida demonstrating the asj-mmetry of the tails. In this egg the rays had struck a portion of yolk farthest removed from the equa- tor. The tails are provided, as is shown, with peculiar toe-like processes on their free extremities. Fig. 5 In this tadpole the right tail encountered the body axis at an acute angle directed anteriorly. Two yolk plugs are to be seen, and the same splitting of the extremity of the left tail as was noted in figure 4. Fig. 6 The lines 7 and 8 on this cauda bifida tadpole indicate the level of the cross-sections shown in the respective figures. In figure 7 the notochord lies ventral to the well differentiated neural tube. In figure 8 the asymmetry of the halved neural tube is shown, more particularly on the right side. Ventral to this lies the notochord, all traces of which are absent from the left halt of the sketch. This right neural tube-half lay in the more activeh' used tail. of the free-swimming tadpole-forms of the green frog; in the case of the experimented eggs, howe\'er, 5 or 6 days were re- quired and in some instances 8 days. Furthermore, it was noted that during the 12 hours immediatel}^ ensuing upon the experi- ment the eggs seemed to have entered into a condition of tem- porary suspension of development, later resuming that process but with greatly lengthened Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bardeen, Charles Russell, 1871-1935, ed; Boyden, Edward A. (Edward Allen), 1886-1976; Bremer, John Lewis, 1874- ed; Hardesty, Irving, b. 1866, ed; American Association of Anatomists; American Society of Zoologists; Wistar Institute of Anatomy and Biology. [New York, etc. ] A. R. Liss [etc. ]
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1906
