. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 302 L. H. HYMAN. TABLE IV. ACTION OF HYDROCHLORIC AND SULPHURIC ACIDS AT DIFFERENT HYDROGEN ION CONCENTRATIONS ON THE OXYGEN CONSUMPTION OF Planaria. All figures represent cc. of oxygen consumed per hour at 20° C. Each vertical column constitutes one experiment, giving successive determinations on the same lot of worms. Normal Respiration, pH .42 •44 •37 .48 •34 •34 .42 .43 •38 .40 •50 •58 •43 Respiration in Acidified Water. Hydrochloric. Sulphuric. pH. 7-5 6-5 5-5 5-0 4-5 7-5 6-5 5-5 5-0 1st hr. •36 •34
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 302 L. H. HYMAN. TABLE IV. ACTION OF HYDROCHLORIC AND SULPHURIC ACIDS AT DIFFERENT HYDROGEN ION CONCENTRATIONS ON THE OXYGEN CONSUMPTION OF Planaria. All figures represent cc. of oxygen consumed per hour at 20° C. Each vertical column constitutes one experiment, giving successive determinations on the same lot of worms. Normal Respiration, pH .42 •44 •37 .48 •34 •34 .42 .43 •38 .40 •50 •58 •43 Respiration in Acidified Water. Hydrochloric. Sulphuric. pH. 7-5 6-5 5-5 5-0 4-5 7-5 6-5 5-5 5-0 1st hr. •36 •34 .28 •34 • 23 .20 • 23 -36 .27 •27 •33 •37 .24 3d hr. •38 •37 •33 •37 .24 .22 • 25 -38 •30 •34 •39 =;th hr. .38 .T? .^0 ,38 .27 .20 .34 .Td .26 ._n Per cent. Initial Depression. 33 40 46 J 16 35 34 37 45 100 90 80 70 60 Recovery after Return to Normal Water. •44 .41 .41 •4i •34 •32 •35 | -49 •39 •4i •44 •49 •4i. B FIG. i. Graph of the action of acids on the rate of oxygen consumption. Curve A, action of hydrochloric acid in carbonate-free water. Curve B, action of hydrochloric acid in ordinary water. Dashed line, average curve of the de- pressing action, obtained by averaging all of the acids except butyric. Percentage of depression, normal respiration being taken as 100, on the ordinate, pH on the 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
Size: 2059px × 1214px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
