. Contributions to embryology. Embryology. Is'^'i'. rhotographs of sections of axial stniclures, Uic locaticn and direction of which are indicated in the text-ligures. In all the photographs and drawings the right side of the embrj-o is on the left in the plates, i. e. all views looking caudad. Dorsal structures are cut slightly more anterior than ventral ones. (Cf. text-figure 3.) 1. Section 425. Posterior part of primitive streak. X 160. 2. Section 406. Most caudal section in which archenteric canal appears. Its location may be recognized by the absence of nuclei. X 160. 3. Section 401. Arch
. Contributions to embryology. Embryology. Is'^'i'. rhotographs of sections of axial stniclures, Uic locaticn and direction of which are indicated in the text-ligures. In all the photographs and drawings the right side of the embrj-o is on the left in the plates, i. e. all views looking caudad. Dorsal structures are cut slightly more anterior than ventral ones. (Cf. text-figure 3.) 1. Section 425. Posterior part of primitive streak. X 160. 2. Section 406. Most caudal section in which archenteric canal appears. Its location may be recognized by the absence of nuclei. X 160. 3. Section 401. Archenteric canal where largest and defined. X 400. 4. Section 395. Large (second) ventral opening, "plaque notochordale" very distinct. X 400. 5. Section 380. Completion plate where best developed. X 160. 6. Section S75. Completion plate near anterior limit. X 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 Carnegie Institution of Washington. Washington, D. C
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Keywords: ., bookauthorcarn, bookpublisherwashingtondc, booksubjectembryology
