116 INJURY, RECOVERY, AND DEATH 



Recovery after exposure to CaCl 2 may be calculated in 

 precisely the same manner as recovery after exposure 

 to NaCl. The only difference is that in formulas (2), (3), 

 (5), (8) and (9) we must employ for the velocity con- 

 stants (K N , K , K R , K s , K A and K M ) the values given 

 for CaCl 2 in Table V, page 98. In formulas (6) and 

 (7) the values of the velocity constants are always the 

 same ( = 0.0036 and JT M = 0.1080) since these are the 



values which are normal for sea water. 



150- 



o Ca C1 2 

 a Sea Water 



loo 



5o 



Th-r 



4oo 



MINUTES 8OO 



FIG. 45. Curves showing the net electrical resistance of Laminaria aaardhii in CaCh 0.27SM 



and in sea water. Unbroken line, calculated values; broken line, observed values. Average 



of ten or more experiments; probable error of the mean less than 10% of the mean. 



Results of such calculations are shown in Fig. 45 

 together with the observed values. 



777. NaCl, Sea Water, CaCl 2 , Sea Water, etc. 



It seemed desirable to test the theory further by vary- 

 ing the experiments in the manner shown in Fig. 46. The 

 calculations are made as already explained. It will be 



