. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. IO6 FRANK K. L1LLIE. also inadvertently torn just back of the embryo, and this opening also appears in Figs. 8 and 9. This, however, was without any noticeable effect on the subsequent FIG. 7. Experiment 57. Operation diagram. Outline of embryo of chick 01 about 33 hours, after Duval. The ruled area to the right of the head indicates the area of the blastoderm destroyed by the heated needle. Examination of the Resulting' Embryo.—The egg was reopened 48 hours after the operation. The heart was beating vigorously
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. IO6 FRANK K. L1LLIE. also inadvertently torn just back of the embryo, and this opening also appears in Figs. 8 and 9. This, however, was without any noticeable effect on the subsequent FIG. 7. Experiment 57. Operation diagram. Outline of embryo of chick 01 about 33 hours, after Duval. The ruled area to the right of the head indicates the area of the blastoderm destroyed by the heated needle. Examination of the Resulting' Embryo.—The egg was reopened 48 hours after the operation. The heart was beating vigorously ; the hole made in the blastoderm by the operation had not closed, and a good deal of yolk had escaped through this and overlay the blastoderm. The embryo was well developed, corresponding to the stage of 70-80 hours (Duval), and apparently normal in all essential respects. (A defect in the right eye was evidently av direct result of the operation.) The head of the embryo had slipped through the hole in the blastoderm and was suspended in the yolk (Figs. 8 and 9). The embryo was cut into 250 sections of 15// thickness. Around the edges of the opening made by the operation the somatopleure turns over and becomes continuous with the splanchnopleure, ectoderm with entoderm, and mesoderm with. 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
