. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGS. 10 TO 25. Fertilization of egg fragments. The original surface is indicated by a heavier line. Figs. 10 to 18, fragments of 5. franciscanus. Fig. 10, large egg fragment showing wrinkles in the vitelline membrane; Fig. n, same after insemina- tion; the fragment is rounded and the wrinkles have disappeared; Fig. 12, same later, with membrane elevated on the original surface. Fig. 13, smaller fragment; Fig. 14, same after insemination, showing change of form and disappearance of wrinkles; Fig. 15, same, later, with fertil
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGS. 10 TO 25. Fertilization of egg fragments. The original surface is indicated by a heavier line. Figs. 10 to 18, fragments of 5. franciscanus. Fig. 10, large egg fragment showing wrinkles in the vitelline membrane; Fig. n, same after insemina- tion; the fragment is rounded and the wrinkles have disappeared; Fig. 12, same later, with membrane elevated on the original surface. Fig. 13, smaller fragment; Fig. 14, same after insemination, showing change of form and disappearance of wrinkles; Fig. 15, same, later, with fertilization membrane elevated on original surface only. Fig. 16, small fragment with entire membrane attached; Fig. 17, same after fertilization; only the characteristic crenations appear; the membrane does not elevate on such small fragments. Fig. 18, extra-ovate of S. franciscanus after fertilization; cortical sphere to left, endoplasmic sphere to right; only the former elevates a membrane. FIGS. 19 TO 25. Fertilization of egg fragments of Patiria miniata. Fig. 19, small fragment with entire vitelline membrane; Fig. 20, same after fertilization, showing the characteristic crenations; Figs. 21 and 22, same, later, showing separation of the fertilization membrane; it is continuous with the vitelline membrane. Fig. 23, large fragment of Paliria; Fig. 24, same after fertilization. Fig. 25, large and small fragment left within the same vitelline membrane, shown after fertilization; the small fragment exhibits only the characteristic crenations; the large one has elevated a fertilization 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, Ca
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
