. Biochemical bulletin. Biochemistry. 192 Striafcd Mtisclc Contraction [Jan. Slippose two adjacent regions, A and B, in a living muscle for example, to differ in the fact that A is pure water and 5 is a 5 per Cent. Solution of butyric acid in water. What is the surface tension between them ? From the curve it is evident that the surface tension of pure water against air is 74 dynes per cm., that of a 5 per cent. butyric acid Solution is 40 dynes per cm. The surface tension be-. -o G < 0. I â I » ' u_J u-_L»-j Lâi_-_L I 254 5 6769i0(r Mols of butyric acid per kilogram of Solution. T. 25°
. Biochemical bulletin. Biochemistry. 192 Striafcd Mtisclc Contraction [Jan. Slippose two adjacent regions, A and B, in a living muscle for example, to differ in the fact that A is pure water and 5 is a 5 per Cent. Solution of butyric acid in water. What is the surface tension between them ? From the curve it is evident that the surface tension of pure water against air is 74 dynes per cm., that of a 5 per cent. butyric acid Solution is 40 dynes per cm. The surface tension be-. -o G < 0. I â I » ' u_J u-_L»-j Lâi_-_L I 254 5 6769i0(r Mols of butyric acid per kilogram of Solution. T. 25° C. The lower curve was obtained by plotting the figures of Drucker (Ztschr. f. physikal. Chem., 1905, lii, p. 641) obtained from Freundlich (Kapillarchemie, p. 59; Leipzig, 1909). The upper curve, for sodium butyrate, was obtained from Forch {Annalen der Physik und Chemie, 1899, Ixviii, p. 801). tween A and B would, therefore, be the difference between the two, or 34 dynes per cm. But suppose that A and B differ in the fact that A contains 25 per cent. and B anywhere up to 100 per cent. of butyric acid. There would be practically no surface tension be- tween the two, altho the difference in concentration is very great. For the present it is immaterial how the difference in concentration is brought about. The blood-lymph might bring equal amounts of. 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 Columbia University Biochemical Association. New York, Columbia University Biochemical Association
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