Injury, recovery, and death, in relation to conductivity and permeability . e resistance rises or falls after the tissue isreplaced in sea water: they are therefore a measure of permanent injury. The absciss® givethe length of exposure to the toxic solution. The cxuves show the calculated values (usingthe velocity constants given in Table X). The points show the observed values; each repre-sents the average of six or more experiments. Probable error of the mean less than 10% of the mean. the rise or fall is nine-tenths completed in about an hour. Fig. 67 shows the calculated values of S; obser
Injury, recovery, and death, in relation to conductivity and permeability . e resistance rises or falls after the tissue isreplaced in sea water: they are therefore a measure of permanent injury. The absciss® givethe length of exposure to the toxic solution. The cxuves show the calculated values (usingthe velocity constants given in Table X). The points show the observed values; each repre-sents the average of six or more experiments. Probable error of the mean less than 10% of the mean. the rise or fall is nine-tenths completed in about an hour. Fig. 67 shows the calculated values of S; observed values are not given because they cannot be very pre- The values of 0 + 10 for solutions containing and , (lifTer slightly from those given earlier for the reason that thecurves here presented include a larger series of experiments. 10 is addedto the value of 0 because the base line is taken as 10, just as in thecase of M. ANTAGONISM 155 cisely dolermined. This is owing to the fact that S affectsonly the speed of recovery (not the final level attained). 2000 /-MNUTES Fig. 67.—Curves showing the (calculated) values of S in M NaCl, M CaCh, andin mixtures of these (the figures attached to the curves show the molecular per cent, of CaCl,in the solution). The curves show the values calculated from constants obtained by trialwhich are given in Table X. The abscissa; represent the time of exposure to the toxic solu-tion. The value of S at the start is in all cases and, as the speed is variable, the most satisfactory pro-cedure is to assume such values of Kr and Ks inthe equation^^ S = R \Ks-KrJ \ — KrT -e —e KsT\ -\-Soe — KsT Ks-Ks as cause the closest approximation to the observed speedof recovery. The values of S thus obtained for eachsolution are sho^vn in the figure. In general, the speedof recovery, as calculated from these values of S, is insatisfactory agreement with the observations. By means of the equations already given and of the
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysiology, bookyear1
