. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 184 PETER R. MORRISON tive humidity of per cent. They found a value of min. or 2 to 3 times our value. A similarly measured value for an earthworm was about half as large on a weight basis or of equal magnitude on the basis of surface area. How- ever, the advisability of making measurements under physiological conditions should be stressed since under abnormal circumstances quite different relations may hold. Thus, for example, Ramsay (1935) showed that in the cockroach water was lost O UJ Q_ i 25 20 * 15 c/
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 184 PETER R. MORRISON tive humidity of per cent. They found a value of min. or 2 to 3 times our value. A similarly measured value for an earthworm was about half as large on a weight basis or of equal magnitude on the basis of surface area. How- ever, the advisability of making measurements under physiological conditions should be stressed since under abnormal circumstances quite different relations may hold. Thus, for example, Ramsay (1935) showed that in the cockroach water was lost O UJ Q_ i 25 20 * 15 c/) O .J CL UJ 10. BODY WEIGHT IN GRAMS FIGURE 1. Water loss in Peripatus and other animals at 24° over calcium chloride as a function of the body weight. Open circles, earthworms; crossed circles, Peripatus; half-closed circles, centipeds; lined circles, sow bugs; closed circles, millipeds. The curves represent }"-= K (X)2/3, where the values for K are the average values given in Table I. much more rapidly at temperatures above 30° with an apparent breakdown of the hydrophobic character of the body surface. In considering this function it is of interest to note that Clark (1915) concluded on the basis of distributional and taxonomic considerations that the Onychophora had originally evolved in a cooler rather than a warmer environment. Thus, the more primitive groups are found on mountains or in the "temperate" regions while. 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
