Page 

 mantle — Continued 



folds 76 



function of 72, 74, 75 



lobes of 76, 77 



mantle-shell preparation 99- 1 00 



nerve net 86 



pigmentation 74 



position in spawning female 303-304 



reduplication 77 



role in formation of shell 91 



Manual of recommended practices for sanitary 



control 442 



manure, use in rearing of larvae 374 



Marceau, F 59 



mantle muscles 83 



muscle fibers 154 



power of the adductor muscle 176 



relaxation time in white part of adductor _ _ 164-165 



Marchal, P., excretion 274 



niarenin 384 



Marsland's pressure bomb 142 



Martin, G. W., feeding experiments 232, 234 



fungi parasites of larvae 376 



Martin, J., calcification 97 



Martino, E. C, antimicrobial agents 393 



Mastif/ocoleus leslarum, boring alga 426 



Matagorda Bay, sedimentation 412 



Matsubayashi, T,, heart beat 251 



Matthews, S. A., nerve net in labial palps of Ano- 



(lonta 114 



Mead, A. D., cell lineage 346 



Medcof,J. C 35 



Maipeque Bay disease 415 



setting, larva 366 



Megathura crenulata, acrosomal reaction 341 



Meisenlieimer, J., cell lineage 346 



metamorphosis 367 



Mendel, L. B., zinc in tissues 390 



Menestho (See: Odostoniia) 436 



Menidia, host of Bucephalus 420 



menthol, use in narcosis 357 



Menzel, R. W., glycogen 386 



Mercenaria mercenaria, catch mechanism 167 



oxygen consumption by tissues 200 



respiration 205 



Meretriz merelrix 31 



Merrill, A. L., chemical composition 381 



Merrill, A. S., O. equestris, salinity range 404 



Merton, N., ciliary motion 137 



mesoderm 355 



formation of 348 



mesohaline zone 404 



metabolism chamber 201-202 



nietachronic wave 136 



metachronism 136 



metals, heavy, detection in blood cells 264 



metamorphosis 366 



Microciona prolifica 428 



micromeres 345-346 



ci uartet 347 



microplankton, seasonal changes in volume 408-409 



microvilli, in ciliated cells 131 



470 



Page 

 mid-gut 226 



milfoil, invasion of 430 



Millar, R. H., fecundity of 0. edulis 313 



Miller, ('. E., penetrometer 399 



Miramachi Estuary, transport of barnacle larvae,. 403 



Mironov, f!.\.. turbidity determination 36-37 



Mironov's current indicator 191 



Mississippi Sound, mortality of oysters due to flood ^ 405 



Mitchell, H. 1) ^ 48 



mitochondria 326 



mitochondrial bodies 325 



Mitsugi, K., starfish stomach extract 438 



mixing, in estuary 401 



Miyazaki, I., male spawning stimulated by Utva 



and other algae 311 



Mobile Bay, saHnity range 405 



Mobius, K., definition of oyster bed 397 



oyster beds destroyed by human activity 398 



Modiolus demisvs, provitamin D content 391 



moisture content, of meat 385 



moisture determination, xylene distillation 385 



Molyula manhattensis 211,427 



Monas, sp., a food for larvae 375 



Monilia, suspected in shell disease 418 



Monochnjsis luthcri, food of larvae 376 



immobilized by style enzyme 231 



monomyarian 152 



Moore, H. F 65 



apron technique 187 



food of the oyster 232 



oyster bottoms 398 



Texas oyster reefs 412 



volumetric determination of food 232 



Morgan, E., Codium in Long Island Sound 429 



Moriches Bay, pollution by duck farms 444 



Morin, (!., effect of potassium on heart 251 



heart physiology 242 



pacemaker system of heart 246 



Morton, J. H, osmoregulation 278 



Motley, H. L., pacemaker system of heart 246 



mouth 70, 219 



Moynier de Villepoix, R., periostracal groove 86 



MPN, most probable number 442 



mucopolysaccharides, in connective tissue 79 



mucous cell, in labial palps 111 



mud, accumulation by Polydora 412 



mud blisters 422 



in Virginia oysters 424 



mud prawn 439 



mud traps 414 



mud worms 421-425 



Murex, acetylcholine content of heart 252 



Murphy, D. B., vitamins 391 



muscle attachment, platform 34,41 



muscle cells 83 



muscles, of gills 130-132 



in gill filaments 131 



chemical changes during contraction 167-168 



rudimentary (in the mantle) 17, 70, 79 



muscle fibers, in adductor 153 



muscle fibers, striated 84-361 



striation 153-1 54 



structure 153 



FISH AND WILDLIFE SERVICE 



