38 



Papers from the Marine Biological Laboratory at Tortugas. 



Table 4. — Continued. 



Table 5. 



1 See record, fig. 4. 



» Six hours after being restored to sea-water, rate was nearly normal with amplitude lower than normal 



8 When restored to sea-water, this medusa pulsated at about two-thirds normal rate. See record, fig. S 



