. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 0° P. ,0 •-^•:*7\v\- c. FIGURE 4. Time lapse camera lucida drawings of an aggregation. See legend of Figure 2 for details. Respective times, in hours after deposition on washed agar: 12, , 13, , 14. nestle against it. This occurred in all but a few of the aggregations studied. The last clearly discerned position of the I-cell is in Figure 2-D. Its position was barely visible in Figure 2-E as the I-cell enlarged and extended to the right. Mean- while, the previously formed clumps enlarged and new ones appeared concen-
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 0° P. ,0 •-^•:*7\v\- c. FIGURE 4. Time lapse camera lucida drawings of an aggregation. See legend of Figure 2 for details. Respective times, in hours after deposition on washed agar: 12, , 13, , 14. nestle against it. This occurred in all but a few of the aggregations studied. The last clearly discerned position of the I-cell is in Figure 2-D. Its position was barely visible in Figure 2-E as the I-cell enlarged and extended to the right. Mean- while, the previously formed clumps enlarged and new ones appeared concen- trically about and at progressively greater distances from the I-cell. At this time, the loose cells and those in the clumps elongated and oriented radially. This caused the clumps to attain the appearance of streams. The position of the ag- gregative center then emerged clearly (Fig. 2-F) and is seen to have occupied the last known position of the I-cell. Ultimately the streams moved into and joined the center, producing the usual conical cell mass. Figure 3 is a series of photomicrographs of another aggregation in which the center again formed at the 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
