. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 60 40 20 10 No. 10. 24 20 16 12 420 20 16 12 420 ANGLE OF GAPE IN DEGREES FIGURE 2. Graphs showing the relation between moments applied to the ligament of Spisula and the resultant angles of gape of the valves. The shell valves are completely closed at the right of each graph (at maximum applied moment). Each clam was subjected to increasing load (a), followed by unloading (b), a second loading (c) and a second unload- ing (d). sima can be compared in this respect with those published by Trueman (1953). The ligament of Spisu
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 60 40 20 10 No. 10. 24 20 16 12 420 20 16 12 420 ANGLE OF GAPE IN DEGREES FIGURE 2. Graphs showing the relation between moments applied to the ligament of Spisula and the resultant angles of gape of the valves. The shell valves are completely closed at the right of each graph (at maximum applied moment). Each clam was subjected to increasing load (a), followed by unloading (b), a second loading (c) and a second unload- ing (d). sima can be compared in this respect with those published by Trueman (1953). The ligament of Spisula would appear to be more efficient than those of Mya arenaria and Anodonta cygnea, but considerably less efficient than those of Pecten and Chlamys. Hysteresis curves are not provided here for all 35 clams of the main series but their mean loads at opening (always consistent values) and their calculated open- ing moments are shown in Table I. It should be noted that, in these experiments on Spisula, each actual load at opening was measured, whereas many of the figures. 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
