Law Governing Loss of Weight in Starving Cassiopea. 



69 



A medusa of Cassiopea starved 

 17 days in diffuse day-light 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 

 Days X 

 Diagram illustrating Table 8. 



Table 9 shows the decline in weight of two normal medusae of Cassiopea 



xamachana starved 25 days in diffuse daylight, in filtered sea-water, at 27.5° 



to 30° C, from June 28 to July 23, 1912, at Tortugas, Florida. The medusae 



were placed in a glass aquarium holding 6 liters, the water being changed 



once in each 24 hours. 



Table 9. 



55 



1 Calculated from formula y= 42.62(1 — 0.0692)*. 



2 Calculated from the formula y = S4-9(i — 0.0579)' 



1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 

 Days X 

 Diagram illustrating Table 9. 



