Page 



effect of salinity 211 



seasonal changes 211 



under pull of adductor 209 



variations 206-207 



oxygen utilization 214 



coefficient 214 



oysters, Blue Points 19 



Chincoteagues 19 



Cotuits 19 



super-iodized 383 



trade names 19 



use in vitamin deficiency 391 



oyster banks 397 



oyster beds 397 



definition by Mobius 397 



oyster bottoms 397, 446 



Elbe estuary 398 



general description of 398 



destruction by human activity 398 



oyster community, abundance of species 398 



biomass 398 



oyster crab 425 



effect on oysters 425 



oyster culture, success in New England 440 



oyster reef 397 



Altamaha Sound 403 



Oyster River, Mass., sedimentation 411 



oyster thief 429 



pallial curtain 77 



pallial line 75 



pallial nerve 72 



pallial organ 72,289 



function 291 



histology 289,290 



of spat of 0. eduUs 292 



pallial strip (synonym of subligamental ridge) 89 



pallium 74 



role in water transport 185 



Palolo worm 319 



paolin 393 



palps, labial 67, 70 



Paphia staminea, enzymes 229 



paramyosin 164 



discovery in clam 164 



in adductor muscle 167 



localization of 164 



separation from actomyosin 164 



Parke, M. W., food of larva i 374 



Parker, R. H., seasonal salinity variation in Texas. 406 



parks, for feeding of oysters 234 



Patella, calcification 94 



pattern of growth 26 



uPalhus, J. L. H., sedimentation 410 



pea crab, (See: oyster crab) 425 



pearl, formation 95 



Pearse, A. S., oyster bottom 398 



Stylochus 438 



Pease, D. C, effect of pressure on cilia 142 



Peden, antisera 142 



cross striated muscles 154 



effect of drugs on ciliary motion 140 



SUBJECT AND AUTHOR INDEX 



Page 



heartbeat 250 



heart physiology 242 



inhibitory axons 166 



mantle muscles 84 



Pedersen, E., respiration in O. edulis 213 



pediveliger 358 



in C. virginica^ 362 



Pekelharing, C. A., glycogen used by gonads 82 



Pelseneer, P. , chalky deposits 33 



excretory system 272 



nervous system 281 



penetrometer 399 



Pepper, L., chemical composition of oysters 381 



perforatorium 342 



perfusion chamber. Wait's 247 



pericardial glands, concentration of ammonia 



carmine 274 



pericardium 70, 239 



pericardium wall 239-240 



pcriostracal gland, function 87 



periostracal groove 77, 86 



periostracum 4, 37 



Perkins, E. B., distribution of larva 369 



Peter, K. , role of basal body of cilia 132 



Petering, H. G., dropping mercury electrodes 214 



Petersen, C. G. J., role of Zostera in feeding 233 



Petitfrere, J., heart 245 



pH, effect on oxygen uptake 211 



in gut and stomach 230 



phagocytes, ingestion of particles 231 



role in excretion 279 



phagocytosis 264 



in gonad 302 



pharyngeal teeth, of drum fish 439 



Phiipott, D. E., electron microscopy of muscle. _ 157-158 



separation of paramyosin 164 



Pholas, labial palps 114 



phosphagens 167 



phosphatase alkaline in mantle 88 



in calcification 88 



role in mobilization of calcium 97 



phosphatase activity, in bivalve muscles 168 



phosphates in shells 44 



phosphorous, radioactive, P^-, use in experiments 



with gills 194 



phosphorylization of ATP 168 



phototaxis in larvae 371 



Physa, ciliary motion on lip 137 



phytoplankton, organic matter content 408 



precipitation reaction 266 



Picken, L. E. R., osmotic pressure of body fluid — 274 



rate of filtration with pericardium, method- . 275 

 Piechowski, R. J., moisture determination by 



xylene distillation 385 



Pieron, H., Nissl granules in nerve cells of Mya 286 



sensory stimulation in Mya 293 



pigment cells, in connective tissue 83 



pigment units, in plankton studies 409 



pigmentation 279 



Pilgrim, R. L. C, effect of acetylcholine on heart — 252 



sensitivity of bivalve heart to acetylcholine. - 252 



473 



