162 



Papers from the Department of Marine Biology. 



Mayer has called attention to the fact that regeneratmg specmiens, 

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

 normal medusae. 



100 



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. 



Fig. 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 days. 



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

 member of any pau- of half disks which showed the highest metabolic 

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

 of these experiments the difference in rate became less marked toward 



