388 



GRACE MEDES 



In Experiment 16, NaCl was used in solutions of still higher 

 concentrations : — 



Experiment 16. Plot 15. July 21, 1915 



a Sea-water 



h 90 cc. S. W. + 10 cc. 0.60M NaCl 



c 80 cc. S. W. + 20 cc. 0.60M NaCl 



d 70 cc. S. W. + 30 cc. 0,60M NaCl 



e 60 cc. S. W. + 40 cc. 0.60M NaCl 



/ 50 cc. S. W. + 50 cc. 0.60M NaCl 



g 40 cc. S. W. + 60 cc. 0.60M NaCI 



h 30 cc. S. W. + 70 cc. 0.60M NaCl 



i 20 cc. S. W. + 80 cc. 0.60M NaCl 



./ 10 cc. S. W. + 90 cc. 0.60M NaCl 



Plot 14 



The growth-curve for the control of Experiment 15 agrees 

 very closely during the first three days with that of the gen- 



