Law Governing Loss of Weight in Starving Cassiopea. 



77 



at 27.5 to 30 C, from June 26 to July 15, 1912, at Tortugas, Florida. One 

 of these specimens was a disk from which the stomach and mouth-arms 

 had been cut ofif, and the other was a medusa with stomach and mouth- 

 arms intact but with its bell-rim cut off. The two were maintained in one 

 and the same 6-liter glass aquarium jar throughout the experiment, and 

 were thus subjected to identical environmental conditions. The water 

 was changed once in each 24 hours. 

 k*- Table 20 shows the 

 decline in weight of two re- 

 generating species of Cas- 

 siopea xamachana starved 

 19 days in diffuse daylight, 

 in filtered sea-water at 

 27.5 to 30 C, from June 

 26 to July 15, 1912, at 

 Tortugas, Florida. One 

 of these specimens was a 

 disk from which the stom- 

 ach and mouth-arms had 

 been removed, and the 

 other specimen was a me- 

 dusa with stomach and 

 mouth-arms intact but 

 with the bell-rim removed. 

 The two were maintained 

 in one and the same 6-liter 

 glass aquarium throughout 

 the experiment, and were 

 thus subjected to identical 

 environmental conditions. 

 The water was changed 

 once in every 24 hours. 



(a 



7 8 9 10 11 12 13 14 15 16 17 18 19 

 Days X 



Diagram illustrating Table 20. 



1 Calculated according to formula y 

 Calculated according to formula y 



35.08(1 - 0.0888)'. 

 ' 56.75(1 0.0681)*. 



