Injury, recovery, and death, in relation to conductivity and permeability . curve, living tissue; lower curve, dead tissue. Allreadings were taken at 18° C. or corrected to this temperature. Each curve represents a single experiment. kations it was found that while the resistance remainedabove that of the control for ten hours or more in thecase of La (N03)3 and Y (N03)3 this was not the case^^with Fe^C804)3 and Th (N03)4. These experiments were varied by adding strongsolutions to the sea water in place of the dry salt. The In the case of SnClj this may be due to the acidity of the
Injury, recovery, and death, in relation to conductivity and permeability . curve, living tissue; lower curve, dead tissue. Allreadings were taken at 18° C. or corrected to this temperature. Each curve represents a single experiment. kations it was found that while the resistance remainedabove that of the control for ten hours or more in thecase of La (N03)3 and Y (N03)3 this was not the case^^with Fe^C804)3 and Th (N03)4. These experiments were varied by adding strongsolutions to the sea water in place of the dry salt. The In the case of SnClj this may be due to the acidity of the concentration is .005 M in the case of each of these salts. The solutions containing Fe, (SO4), and Al, (SOJ, were acid. The drysalts were added to the sea water in suflBcient amounts to make theconcentrations as follows: M La(NOs)s, M CeCNOj),, , Y{IfO^)i, M Fe,(S0,)3, M AL (SOJ3, M Th (NOa)*. 48 INJURY, RECOVERY, AND DEATH result of such an experiment with CaCls is shown in It will be observed that while the resistance of. 250 500 MINUTES Fio. 20.—Curves showing the net electrical of Laminaria agardhii in solutions ofthe same conductivity as sea water, , in La(NOj)3 about M, CaCli M., MnCliabout M, MgClj about A/ and in NaCl M. The curves for La(NOi)i, MnChand MgCh represent single typical experiments (all readings were taken at 18° C. or cor-rected to this temperature); the curves for CaCh and NaCl represent the averages of six ormore experiments; probable error of the mean less than 10% of the mean (all readings weretaken at 18° C. or corrected to this temperature). the living tissue increases^^ to that of the dead Tile temporary fall at the start is due to the increased conductivity ofthe solution contained in the apparatus and in the cell walls. MECHANISM OF PROCESS OF DEATH 49 tissue falls from to , thereby losing 11% ofthe resistance it had in sea water. Th
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectphysiology, bookyear1
