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 off, and the other was a medusa with stomach and mouth- 

 arms intact but with its bell-rim cut ofif. 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. 



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 1 

 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. 



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

 Days X 



Diagram illustrating Table 20. 



Table 20. 



• Calculated according to formula y = 3S.o8(i — 0.0888)'. 

 ' Calculated according to formula y <= s6.75(i — 0.0681)*. 



