MECHANISM OF PROCESS OF DEATH 53 



necessary to employ a solution containing NaCl+CaCl 2 , 

 since the addition of alkali to sea water causes a precipi- 

 tate of Mg(OH) 2 . In order to compare the effect of acid 

 with that of alkali a solution of HC1 having the same 



120- 



100 







100 



150 



MINUTES 



FIG. 24. Curves showing net electrical resistance of Laminaria agardhii in 1793 o.c. NaCl 



0.52 M + 207c.c. CaClz 0.279 M containing various amounts of HC1, as shown by the 



figures attached to the curves. Each curve represents a single experiment. All readings 



were taken at 18 C. or corrected to this temperature. 



conductivity as the sea water was added to a solution 

 containing 1793 cc. NaCl 0.52 M + 207 cc. CaCl 2 0.278 M 

 (this solution had the same conductivity as sea water). 

 The results are shown in Fig. 24; it will be noted that 

 they are in good agreement with those obtained by adding 



