. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 1. Photographs of unfertilized eggs taken with a Leica camera through the microscope-centrifuge (radius 11 cm.), showing successive changes (examine from right to left) in stratification of granules and in shape of eggs. Magnifica- tion, 87 diameters. The direction of the centrifugal force is downward. First three rows, Chcctopterus exposed for 5 seconds at 35, 55, 95, 165, 205 and 265 (double exposure), 345, 375, 450, and 480 seconds after starting centrifuge. Speed of the microscope-centrifuge was 55 in the fir
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIG. 1. Photographs of unfertilized eggs taken with a Leica camera through the microscope-centrifuge (radius 11 cm.), showing successive changes (examine from right to left) in stratification of granules and in shape of eggs. Magnifica- tion, 87 diameters. The direction of the centrifugal force is downward. First three rows, Chcctopterus exposed for 5 seconds at 35, 55, 95, 165, 205 and 265 (double exposure), 345, 375, 450, and 480 seconds after starting centrifuge. Speed of the microscope-centrifuge was 55 in the first row and 66 in the second and third rows. At the highest speed about 330 flashes of light oc- curred during tin exposure. Fourth row, (.'nmingia exposed 10 seconds at 35, 95 and 155 seconds after starting ccntrifuiM . Speed 38 to 55 The eggs are separated by jelly. Fifth row, Arbacia exposed 10 seconds at 45, 150, and 285 seconds after start- ing centrifuge. Speed 35 The eggs are partially separated by 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
