152 



Papers from the Department of Marine Biology. 



Mayer has called attention to the fact that regenerating specimens, 

 during the first days of any experiment, starve more rapidly than 

 normal medusae. 



100 



90 



80 



70 



60 



50 



FIG. 11. Showing loss of weight of active and activated half-disks during starvation. 

 (Compare table 10.) The divisions along the ordinate represent percentages 

 of the original weight; those along the abscissa represent time in days. 



100 



90 



80 



70 



60 



50 



FIQ. 12. Showing loss in weight of activated and inactive half-disks during starvation. 

 (Compare table 11.) The divisions along the ordinate represent percentages 

 of the original weight; those along the abscissa represent time in daya. 



In the same manner during the first half day of any experiment the 

 member of any pair of half disks which showed the highest metabolic 

 activity showed also the greatest loss hi weight, yet even in the course 

 of these experiments the difference hi rate became less marked toward 



