. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 314 A. DALCQ AND G. VANDEBROEK In the first case (Figs. !</. Ib, and If) one mark (a) was made in the immediate vicinity of the polar spot and another (/?) on the vege- tative pole (Fig. la). In the second case one mark only was made, near the polar spot (Fig. 2o). In the third egg the mark was located a short distance from the pole, hetween the polar spot and the equator (Figs. 3o and 30'). Tracing the fate of mark a of the first egg, we see that two minutes after fertilization the angular distance hetween the polar spot
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 314 A. DALCQ AND G. VANDEBROEK In the first case (Figs. !</. Ib, and If) one mark (a) was made in the immediate vicinity of the polar spot and another (/?) on the vege- tative pole (Fig. la). In the second case one mark only was made, near the polar spot (Fig. 2o). In the third egg the mark was located a short distance from the pole, hetween the polar spot and the equator (Figs. 3o and 30'). Tracing the fate of mark a of the first egg, we see that two minutes after fertilization the angular distance hetween the polar spot and the adjacent border of the colored region is increased. Comparing this with the similar behavior in the other eggs, it may be noted that all of the marked areas on the animal hemisphere have in- CN. L. R. M. 3d. 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
