RHYTHMIC PULSATION 



335 



Experiment 71. 3 July 25. Stichopus moebii 27 cms. long; cloacal 

 end amputated and immersed in 200 ce. sea water + 5 drops l*^ KCN. 



Not closing completely 

 Closed phase very brief 

 Full amplitude 

 Closure not complete 

 Irregular movements 

 Dead 





""" ""■ '°° ""' ^oo eoo voo eoo 300 .l^o ,1 .io ,300 .^o' 

 A^<e c/ayo^ea ~ /7)/outes. 



r -tl^^ f VnT^'""!' '" ''^ '^^*^'- ^ = ^" '"^^^^ ^^' of 'soiled sea water. 

 C = sea water (300 cc.) + 5 per cent urea (5 cc.) 



to fo/lf ' '^' point marked i , 'B' had ceased to pulsate, and was transferred 

 to normal sea water, m which it temporarily revived. 



