MECHANISM OF PEOCESS OF DEATH 53 



necessary to employ a solution containing NaCl+CaCla, 

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

 tate of Mg(0H)2. In order to compare the effect of acid 

 with that of alkali a solution of HCl having the same 



150 



MINUTES 



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



0.52 M + 207C.C. CaCh 0.279 M containing various amounts of HCl, as shown by the 



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



were taken at 1S° 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^ 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 



