348 



GRACE MEDES 



Specific gravity (estimated) of the solutions 



e. . . 

 d.. 

 c. . . 

 b.. 

 aa. 

 h+ 

 c+ 

 d+ 



HOURS 



1.01561 



01673 



01784 



01896 



02007 



02119 



1.02230 



1.02341 



1.02453 



1.02565 



1.02676 



24 HOURS 



1.01631 

 1.01748 

 1.01864 

 1.01981 

 1.02097 

 1.02214 

 1.02330 

 1.02447 

 1.02563 

 1.02680 

 1.02797 



48 HOURS 



1.01694 



1.01846 

 1.01936 

 1.02058 

 1.02178 

 1.02299 

 1.02420 

 1.02541 

 1.02662 

 1.02782 

 1.02883 



72 HOURS 



1.01736 



01860 



01984 



02108 



02232 



1.02356 



1.02480 



1.02604 



1.02728 



1.02817 



1.02976 



96 HOURS 



1.01848 

 1.01980 

 1.02112 

 1.02244 

 1.02376 

 1.02508 

 1.02640 

 1.02772 

 1.02904 

 1.03036 

 1.03168 



120 HOURS 



1.01953 

 1.02092 

 1.02232 

 1.02371 

 1.02510 

 1.02650 

 1.02790 

 1.02929 

 1.03069 

 1.03208 

 1.03348 



Measurements of larvae. Experiment 3. Plot 5 (diluted sea-water) . 

 centrated sea-water). June 17, 1915 



Plot 6 (con- 



In comparing the growth-curve of the control for this experi- 

 ment with that of our normal, we find a much more rapid early 

 development resulting in a size more than twice that of the 

 average. Constant and gradual growth was maintained during 

 the four following days, so that each point on the growth- 

 curve was considerably in excess of the normal (D, plot 1), 

 and at the close of the experiment the specimens from this 

 control culture measured 93.25, or 12.91 more than the general 

 average 80.34. 



