Law Governing Loss of Weight in Starving Cassiopea. 



79 



Table 22. 



> Calculated according to formula y = 19.76(1 

 'Calculated according to formula y = 30.11(1 



0.0937)*. 

 • 0.0538)*. 



The two specimens were maintained in one and the same 6-liter aquarium 

 jar throughout the experiment, and were thus subjected to identical en- 

 vironmental conditions. The water was changed once in every 24 hours. 



Table 23 shows the decline 

 in weight of two regenerating 

 specimens of Cassiopea xama- 

 chana, one being a disk with- 

 out stomach or mouth-arms, 

 and the other a medusa with 

 stomach and mouth-arms in- 

 tact but with the rim of the 

 bell cut off. Thus each me- 

 dusa was regenerating, the disk 

 being without and the medusa 

 with its stomach. These two 

 specimens were kept side by 

 side in one and the same 6- 

 liter glass aquarium, in con- 

 stant darkness, in filtered sea- 

 water at 27.5° to 30° C. for 19 

 days from June 26 to July 15, 

 1 912. The water was changed 

 once in every 24 hours. 



9 10 11 12 13 14 15 16 17 18 19 

 Days X 



Diagram illustrating Table 23. 



Table 23. 



> Calculated according to formula y = 21.53(1 — 0.0843)* 

 •Calculated according to formula y = 40.7(1 — 0.0511)*. 



