Index 



Acid phosphatase, 



aginji, increases on, 385 



of Ciimpanularia, 381, 386 



of ectoderm, 385 



of j^astrodermis, 385 



of hydra, 381, 384, 385 



of hsosomes, 381 



of pedal disk, 384, 385 



of tentacles, 384 



of tentacles, Campamdaria, 386 

 Acontia, 179, 180, 184, 190 



5-h\dro.\ytryptamine of, 180, 184 



nematocysts of, 190 

 Acrasin, 375 

 Acrifla\ine, 



Artcmia, labeled with, 388 



CampanularuL labeled with, 388 

 Acrophore, 189 

 Acropora cenicornis, calcification in, 272, 



285 

 Acropora luilntata. 285 

 Action potentials, 



of CorclyIo)>lior(i, 293 



of h>dra, 75, 76 



of Tulnilaria, 293 

 Activators, of feeding reflex, 210 

 Adenosine triphosphate, of aging Cam- 



paniilaria, 389 

 Aging, 373 



acid phosphatase, increase in, 385 



adenosine triphosphate of Campami- 

 laria during. 389 



of Campaniihria, 302, 303, 375, 379, 

 387-391 



on cellular replacement, 393 



of Ccreiis peduncithitus, 374, 375 



in coelenterates, 373-398 



Aging, 



of corals, 396 



defined, 373 



of human myocardium, 378, 379 



of himian skin, 376 



of hydra, 373, 379 



of Maniciiui arcolata, 395 



models for, 376 



of Ohdia commissiirulis, 375 



radiation on, 390, 391 



on regeneration, 404 



theory of, 393, 394 

 Ahermatvpic corals, 



defined, 270 



distribution of, 270 



growth properties of, 270 

 Albino Clilorohijdra, see C. viridissima, 



albino. 

 Algae, 



calcareous, 270 



in calcification, 285 



in reef building, 279 



see cdso S>'mbiotic algae 



see also Zooxanthellae 

 Alkaline phosphatase, of corals, 284 

 Amastigophore, 189 

 Amino acids, 



on feeding reflex, 211 



of Pliysalia toxin, 173 

 Anmionia gas, 



amoiuit in sexual cultures, 349 



in dense culture of hydra, 350 



micromethod for, 345 



permeabilit\' of cell membrane to, 349, 

 358 



on pH of culture solution, 349, 350 



toxicity, varies with pH, 349 



449 



