. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 1. Diagrammatic oral surface of the sand dollar, Echinarachnius panna, showing length and width of the test. which was fastened to the opening between the bow and the rake proper. This basket was attached by means of wire. Method of measuring A vernier caliper calibrated on the main scale in millimeters and on the vernier to tenths was used for all the measurements. The spines were removed from those portions of the test where contact with the calipers was to be made. Length The distance from the edge where the anus i
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGURE 1. Diagrammatic oral surface of the sand dollar, Echinarachnius panna, showing length and width of the test. which was fastened to the opening between the bow and the rake proper. This basket was attached by means of wire. Method of measuring A vernier caliper calibrated on the main scale in millimeters and on the vernier to tenths was used for all the measurements. The spines were removed from those portions of the test where contact with the calipers was to be made. Length The distance from the edge where the anus is located to the opposite edge of the animal is considered the length of the test (Fig. 1 ). Width The width of the tesl is obtained by measuring the distance from side to side, perpendicular to that of the length (Fig. 1).. 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
