460 



INDEX 



Manicina areolata, aging of, 396 

 Mass culture, 



of hydra, 203, 363, 364 



lack of sterility in, 366 

 Mastigophore, b-, p-, and q-types, 189 

 Mechanical factors on regeneration, 404 

 Medusa, Crospcdactista, 317, 318, 321, 



325 

 Medusa budding, Craspedacusta, 325 



temperature on, 318 

 Membrane, 



of ectoderm, 26, 



of endoderm, 26 



limiting, of surface cells, 12 

 Mesenteric filaments, toxins of, A. ele- 



gantissima, 177 

 Mesoglea, 1, 4-8, 24, 88, 52, 57, 59, 65, 



246, 419, 421 



anchors muscle, 5 



attachments of, 51 



attachment to muscle, 59, 60 



ectodemi, relation to, 22 



embeds cells, 6 



embeds ectodemi, 3 



embeds endoderm, 3 



endoderm, relation to, 22 



epithelial basement membrane, com- 

 pared to, 65 



granules, in, 26 



histology of, general, 3 



of hypostome, 34 



interstitial cell, relation to, 419 



limiting membrane, lack of, 3 



muscle attachments to, 59, 60 



on nutrient transfer, 420 



of Phijsalia, \1A 



plicated, 61 



in regeneration, 419 



restoration in regeneration, 420 



as supporting substance, 4 



synthesis, site of, 64 



of tentacle, 7 



thickened, at pedal disk, 177 



traversed by narrow cytoplasmic proc- 

 esses, 61 

 Metabolic gradient, hydra, food reserves 



on, 425 

 Methionine, activates feeding reflex of 



corals, 230 

 N-methylpyridinium hydroxide, 180 

 Metridium, 



toxins of acontia, 181 



see also Sea anemone 



Microenvironment, 343 



macroenvironment, contrasted with, 

 338 



visualization, with brom cresol purple, 

 338 

 Microinjector, for feeding hydra, 236 

 Microsporidia, 



infects hydra, 400, 402 



on regeneration, 404 



removed by Fumidil B, 402 

 Microstomum, nematocvst movement in, 



437 

 Microvilli, 



in corals, 49 



of gastroderm, 54 



in gorgonians, 48 



in scleractinians, 48 

 Migration, cellular, 314 



of cnidoblasts, 436-440 



of interstitial cells, 439 



of gastrodermis, 416 

 Milleporidae, in reef building, 269 

 Mitosis, 



in Ccitnpantdaria, 313 



in Cordijlophora, 313 



in hydra, 316 



of interstitial cells, 316 



during regeneration, hydra, 315, 418 

 Model, of Cordtjiophora colony, 290, 291 

 Nh)llusks, in reef building, 270 

 Mucopolysaccharide, in mucous cell, 44 

 Mucous cell, 



acid mucopolysaccharide of, 44 



gland cell, different from, 45 



from interstitial cell, 78 



in regenerating hvdra, 444 

 Mucus, 250, 252 



secreted by Craspedacustu, 317 

 Muscle ( fibers, filaments ) , 



cellular relation of, 5, 8, 53, 55, 57, 

 58, 63 



in cnidocytes, 8, 32 



cross striation, lack of, 5 



in digestive cell, 5 



in ectoderm, 5, 24, 51 



in endoderm, 4, 5 



in epithelio-muscular cell, 5 



of gastrodenn, 54, 57 



histology of, general, 5 



interdigitated, 54, 62 



longitudinal, of ectoderm, 5 



mesoglea, anchored in, 5, 58 



restricted, within a cell, 24 



transverse, of endoderm, 5 



