Page 



effect of continuous pull 179 



effect of light 175 



effect of temperature 174 



effect of tide 175 



female spawning 172 



kymograph records 169 



major types 169-172 



method of recording 16S 



of dying oyster 122-173 



of spawning female 309-310 



percentage of time closed 174 



role in water transport 185 



Shelton Bay, Wash., pollution 444 



Shukow, E. K., muscle tonus 166 



Siebert, W., labial palps__ 113 



silt, use in determining role of water transport _ 193 



sinuses, blood 84 



Sirolpidiitm zoophtornm, destructive to larvae _ _ 376 



Skelelonema 429 



as food of oyster 232, 234 



Skramlik, E. V., contraction of auricles 244 



"sliaing" hypothesis of muscle contraction 167 



Smeltz, H. A., food of oysters 232 



Smith, E. A., oysters adhering to Trochns 2 



Smith, R. A., shell analysis 44 



Smith, R. O., oyster culture in South Carolina 412 



sodium potassium ratio in adductor muscle 162 



soil extract, used in algal culture 375 



solids, in meat 381 



local variation 382 



seasonal variation 382 



somatoblast (X cell) 348 



second (M cell) 348 



sorting of food, by labial palps 114 



sorting mechanism, of labial palps 118 



South Carolina, muddy tidal flats 412 



Sparck, R., experiments with Zosiera detritus 233 



rearing of larvae 374 



respiration of 0. ediilis and C. angulata 213 



setting 369 



sex changes in O. edidis 314 



Zostera as food 234 



Sparks, A. K., Mytilicola 420 



Sparrow, F. K., Dermocyslidium 416 



marine fungi 376 



spat 366 



spatf all 365 



spawning 303-313 



artificially initiated in oyster population 319 



at low temperature 307 



biological significance 319-320 



critical temperature vs. critical condition 309 



eggs discharged through the gills 306 



female reaction 303-304 



frequency 312 



hermaphroditic oyster 318 



inhibition 312 



initiation by males 319 



lunar periodicity 318-319 



male reaction 310-312 



of Onset oysters 308 



sex reversed oysters 318 



shell movements 309 



SUBJECT AND AUTHOR INDEX 



Page 



stimulation by temperature 308-309 



specific gravity, of blood 265 



effect of reduced salinity 265 



spectrographic analysis of meat 383 



sperm, discharge of 310-311 



suspension used in artificial fertilization 342 



transport by currents 320 



sperm ball 327 



sperm extract, stimulation of spawning 312 



spermary, definite 324 



mature 327-328 



ripe 302 



spermatocyte 327-328 



of 0. lurida 327 



secondary 327 



spermatogenesis 362 



inhibition by ovocytes 315 



successive stages 330 



spermatogonia, number of divisions 326 



primary 325 



spermatozoa, in follicles 302 



Sphaerium, cessation of ciliary motion 146 



heart beat 250 



sphaerolithes 103 



sphincter, of gonoduct 303 



spiral, logarithmic 25 



spiral structure, of shell 21 



spiremes 325, 327 



spirochaetes 426 



Spisula solidissima, ligament of 60 



catch mechanism 167 



Spitzer, J. M., excretory system 271, 274, 276, 277 



Spondylus, cross striated muscles 154 



sponges, on oyster grounds 428 



Sporn, E., analysis of conchoid curve 23 



Springer, P. F., Milfoil invasion 430 



SSO (Haplosporidium coslale) 417 



Stafford, J., eggs of 0. lurida 305 



larval development, 0. lurida 355 



metamorphosis 367 



promyal chamber 123 



starfish 437 



abundance of 437 



destructiveness 437 



larvae 437 



manner of attacking oysters 438 



movements 437 



statocyst 360-36 1 



Stauber, L. A., excretion of India ink 279 



heart beat 247-249 



Stein, J. E., Hexamita 419 



Steinhardt, B., calcification theory 96 



Stella grubi, sponge associated with 0. permollis 12 



Stempell, W., ligament 48 



Stenzel, H. B., aragonite in resilium 54 



aragonite in shells 4 



generic names in family Osteridae 6 



sterols, in oysters 391-392 



sterroblastula 347 



Stevens, B. A., Calianassidae 439 



stimulation, of nerve by inorganic salts 294 



velocity of transmission 293 



stimulation of tentacles, latent period 294 



477 



