452 



INDEX 



Cell surface, irregular nature of, 6 

 Cell suspension, preparation of, 246 

 Centrioles, 81-83, 85, 135, 144, 146 



cnidocil, relation to, 135 



of interstitial cell, 135 



with radiating spokes, 135 

 Cereiis pcdunculatus, aging of, 374, 375 

 Chemical inhibition, of regeneration, 399- 



412 

 Chemistry, 



of nematocyst capsule, 154, 155 



of nematocyst toxin, 155-163 

 Chloramphenical, eliminates algae from 



C. viridissima, 267 

 Chlorohtjdra viridissima, 52, 402 



albino, 259, 402, 403 



absence of algae from, 265 

 growth rate of, 260-262 

 limited food on, 260 

 reinfection of, 267 

 reinfection of eggs, 267 

 starvation on, 262 



algae, intracellular location of, 54 



budding, during starvation, 265 



culture of, 259 



desmosomes of, 55 



epidennis of, 53 



food uptake by, 265 



gastric region of, 54 



gastrodermis of, 53 



growth rate of, 259, 260, 262 



hypostome of, 52 



limited food on, 260-262 



magnesium requirement for, 266 



sexual differentiation in, 360 



starvation on, 262 



symbiosis in, 259 



zoochlorellae in, 259 

 Choline esterase, 



occurrence of, 185 



in scyphozoans, 185 

 Cilium, 85-87 

 Cleavage furrow, 45 

 Clone of Anthopleura clegantissima cells, 



245, 247, 248 

 Cluster of cnidoblasts, 45, 80 

 Clijtia, longevity of, 312 

 Cnidoblast, 54, 70, 137, 144, 170 



cnidocyte, conversion to, 3 



dedifferentiation of, 313 



derived from interstitial cells, 3, 78 



differentiates into secretory cell, 314 



double membranes of, 10, 14, 16, 31 



endoplasmic reticulum of, 3, 96 



Cnidoblast, 



Golgi complex of, 96 



in groups, 2, 45, 81, 98 



liistology, general of, 2, 3 



intercellular bridge of, 45, 100 



migration, 48, 436-440 

 in Hydra pirardi, 438 

 pathways of, 437 



nematocyst of, 96 



nerve cell, contacts, 72 



munber in a cluster, 80 



redifferentiation of, 314 



synchronous differentiation of, 48, 106 



syncytia of, 3, 10, 14 



synthetic activity, 

 after peak of, 84 

 at peak of, 106, 108 

 Cnidocil, 32, 85, 86, 116, 120, 122, 135. 



144, 146, 170 



centriole, relation to, 135 



distribution of, 195 



filaments of, 135 

 Cnidocyte, 3, 8, 16 



epithelio-muscular cell, embedded in, 

 30, 32 



muscle filament of, 8 



syncytia, absence of, 8 



of tentacle, 7, 8, 30, 32 

 Coelenterates, 



aging of, 373-398 



as models for aging, 376 



phannocological compounds of, 179- 

 186 

 Collagen, of nematocyst capsule, 134, 148 



composition of, 148 

 Colonial growth, 



alteration of pattern, Cainpamdaria, 

 301 



Campanularia, 297-316 



Cordylophora, 287-295 



nutrition on, Campanularia, 301 



patterns of, Campamdaria, 298-300 



temperature on, Campamdaria, 301 

 Colonial hydroids, 287 

 Colonies, of Craspedaciista polyps, 317 

 Comparative biochemistrv', of inverte- 

 brate nutrition, 233 

 Conduction, by musculo-epithclial cells, 



75 

 Corals, 



aging of, 396 



ahermatypic, 270 



alkaline phosphatase, 284 



calcification by, 269, 271 



differential growUi of, 284 



