. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 430 JOHN R. GREGG TABLE I Influence of 2,4-dinitrophenol on the respiratory rate of Rana pipiens embryos DNP-concentration, molar Egg clutch Stage Age 18° C. Control 5 X ID-6 10-5 5 X 10-5 10^ 10-3 A 11 34 11 19 24 33 31 12f 46 18 28 35 40 35 1 16 72 29 42 50 45 39 4 19 118 56 93 104 85 79 25 B 6 7 6 6 13 24 23 3 10| 30 12 16 22 32 28 2 15 67 24 33 36 40 35 9 10! 90 38 54 71 53 51 6 19 118 56 85 102 71 64 26 20 140 84 112 118 104 78 19 Main compartment of each flask: 20-50 embryos in 1 ml. 10% Ringer's. Side-arm of each flas
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 430 JOHN R. GREGG TABLE I Influence of 2,4-dinitrophenol on the respiratory rate of Rana pipiens embryos DNP-concentration, molar Egg clutch Stage Age 18° C. Control 5 X ID-6 10-5 5 X 10-5 10^ 10-3 A 11 34 11 19 24 33 31 12f 46 18 28 35 40 35 1 16 72 29 42 50 45 39 4 19 118 56 93 104 85 79 25 B 6 7 6 6 13 24 23 3 10| 30 12 16 22 32 28 2 15 67 24 33 36 40 35 9 10! 90 38 54 71 53 51 6 19 118 56 85 102 71 64 26 20 140 84 112 118 104 78 19 Main compartment of each flask: 20-50 embryos in 1 ml. 10% Ringer's. Side-arm of each flask: ml. DNP in 10% Ringer's adjusted to give final concentration shown. Side-arm contents delivered to main compartment immediately after first reading. Readings were made for four or five hours (usually five) at half-hour intervals. Respiratory rates were constant after first hour. Entries designate average rates for last three (four) hours of four (five) hour FIGURE 1. Respiratory norm (lower curve) and potential (upper curve) of Rana pipiens embryos. Abscissa, developmental age. Ordinate, respiratory 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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