48 



INJUEY, RECOVERY, AND DEATH 



result of such, an experiment with CaClg is shown in Fig. 

 19. It will be observed that while the resistance of 



250 



500 



MINUTES 



Fig. 20. — Curves showing the net electrical resistance of Laminaria agardhii in solutions of 

 the same conductivity as sea water, i.e., in La(N03)3 about 0.126 M, CaCb 0.278 M., MnCls 

 about 0.317 M, MgCh about 0.28 M and in NaCl 0.52 U. The curves for La(NOj)i, MnCli 

 and MgCl2 represent single typical experiments (all readings were taken at 18° C. or cor- 

 rected to this temperature) ; the curves for CaCla and NaCl represent the averages of six or 

 more experiments; probable error of the mean less than 10% of the mean (all readings were 

 taken at 18° C. or corrected to this temperature). 



the living tissue increases^'' to 109.2% that of tbe dead 



" The temporary fall at the start is due to the increased conductivity of 

 the solution contained in the apparatus and in the cell walls. 



