. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O. INTER o CELLULAR O 40 60 80 100 FIGURE 2. Concentrations of radioactive phosphate in samples of unfertilized Arbacia eggs (ordinates) during the first two hours of immersion in sea water plus mM phosphate (abscissas). Four possible bases for intake constants are given. Common-dish method; no washing. Tem- perature °. Apparently the washing with erythritol obscures the normal ion intake, and conse- quently the intake constant taken from Figure 1 is fallacious. The true late intake constants for this experiment mus
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. O. INTER o CELLULAR O 40 60 80 100 FIGURE 2. Concentrations of radioactive phosphate in samples of unfertilized Arbacia eggs (ordinates) during the first two hours of immersion in sea water plus mM phosphate (abscissas). Four possible bases for intake constants are given. Common-dish method; no washing. Tem- perature °. Apparently the washing with erythritol obscures the normal ion intake, and conse- quently the intake constant taken from Figure 1 is fallacious. The true late intake constants for this experiment must be about K3 = X 10~n and K4 = X 10~10 for unfertilized and fertilized eggs. Experiments done by other methods show the course of intake much better. Thus the results of the two experiments done by the separate-dish method are shown in Figure 3. Both experiments show the existence of an early maximum, a loss phase and a late maximum. Experiment SI gives KI = 100 X 10~10 and K2 = 10 X 10-10 moles cm-2 hr^1, while Experiment S2 gives Kr = 33 X lO"10 and K22 = The caption of Figure 3 explains the sub- and superscripts. It is apparent that these constants are not far from those found from Figure 2, in which an experiment was done with a different method (the common-dish method) but not utilizing erythritol solution washing. Washing disturbs the ion 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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