. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 4TH ST. 10 IST CL. 1ST, 2ND 8. 3RD CL. 180 157 TEMPERATURE FIG. 1. The relation, at different temperatures, of developmental intervals to time in Rana pipicns. Ordinate, logarithm of time in minutes between the specified stages; abscissa, temperature in °C. The data for development between stages 10 and 20 are plotted as a straight line by the arbitrary distortion of the temperature axis. The latter is used as a base for the data for other intervals. The upper complete curve
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 4TH ST. 10 IST CL. 1ST, 2ND 8. 3RD CL. 180 157 TEMPERATURE FIG. 1. The relation, at different temperatures, of developmental intervals to time in Rana pipicns. Ordinate, logarithm of time in minutes between the specified stages; abscissa, temperature in °C. The data for development between stages 10 and 20 are plotted as a straight line by the arbitrary distortion of the temperature axis. The latter is used as a base for the data for other intervals. The upper complete curve describes development between gastrulation (stage 10 of Pollister and Moore, 1937) and gill circulation (stage 20) ; the next, between fourth cleavage and gastrulation; the next, between fertilization and first cleavage. In the lowest curve, the circles describe development between first and second cleavage, the squares, between second and third, and the triangles, between third and fourth. Twenty points are single determinations; the remaining thirty-four points are the averages of from two to ten determinations. One hundred and seventy-two deter- minations were made in all. The broken lines were drawn through the points at ° parallel to the curve for stages 10 to 20. These broken lines emphasize the real nature of the slope differences among the curves for different 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
