. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ELECTROKINETIC STUDIES OF MARINE OVA. V. 261 reversed in sign as far down as pH (2) The maxima of both curves are found in the neighborhood of pH (3) Though a statistical separation of the potentials on unfertilized and fertilized eggs at corresponding pH's is impossible, because of the wide fluctuation of the readings, the fact that the average values of the potentials on the fertilized eggs are invariably more positive than those of the unfertilized can be taken as a strong indication that the former are really m
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. ELECTROKINETIC STUDIES OF MARINE OVA. V. 261 reversed in sign as far down as pH (2) The maxima of both curves are found in the neighborhood of pH (3) Though a statistical separation of the potentials on unfertilized and fertilized eggs at corresponding pH's is impossible, because of the wide fluctuation of the readings, the fact that the average values of the potentials on the fertilized eggs are invariably more positive than those of the unfertilized can be taken as a strong indication that the former are really more -30 -25 -20 -15 -10 -5 0 : unfertilized eggs X : fertilized eggs. I I I V. FIGURE 1. Anthocidaris crassispina. pH positive. Needless to say, this is not due to an increase in the viscosity of the medium by the addition of the seminal fluid, since the eggs are later washed thor- oughly. (4) The pH-potential curve for the unfertilized eggs is more zig-zag than that for the fertilized eggs, especially between pH 6 and 7. A repetition of the measurement in the following season (Series II of Table I) gave similar results which were incorporated in the final calculation. PSEUDOCENTROTUS DEPRESSUS In order to test the generality of the AntJwcidarls findings, another sea-urchin Pseudocentrotus depressus was studied. However, in this case, attention was paid. 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
