Page 



Crepidula, sp 426 



Crepidula fornicata, introduction to Europe 426 



critical temperature of spawning 309 



Crofts, D. R., calcification theory 94 



cross striated muscles 154 



crossing over, in ovocj'tc of C. commercialis 326 



Crozier, W. J 30, 248 



Crijptomonas, affected by style enzyme 231 



crystalline style 71, 223-225 



appearance 224 



chemical composition 225 



dissolution 225 



formation 225 



in larva 359 



pH of 230 



role in feeding 225 



rotat ion 225 



topography 223-224 



crystaUine style sac 219-220 



secretion 225 



ctenidia 121 



Cuenot, L., excretion 274, 279 



cumarin, detected by tentacles 294 



curare, effect on heart 253 



currents, nontidal residual 402, 403 



currents, turbulent effect of 403 



current indicators . 190, 192 



Cyclas (Sphaerium), cessation of ciliary motion 146 



cycles of shell movement, daily 180 



Dahmen, P., nervous system of 0. chilensis 281 



pallial organ 291 



stomach histology 222 



Dakin, W. J., calcification theory 94 



mantle muscles 84 



Dall, W. H '_ 2,48 



Damariscotta River 21 



shell heap 440 



Dan, J. C, acrosomal reaction 341 



Danielli, J. F., cytochemistry 344 



Daniels, F., dropping mercury electrodes 214 



Dantan, J. L., fecundity of 0. edulis 313 



larval development of 0. edulis 355 



Dasijbatis dipterus, synonym Atnphovistius 439 



Davaine, C, metamorphosis of larva 366 



Davis, H. C, food of larvae 375 



reactions of larvae 371 



rearing of larvae in laboratory 375 



Dean, B., oyster bottoms 398 



Dean, D., enzyme in style 231 



pH of crystalline style 231 



Deane, H . W., cytochemistry 344 



DeBocr, S., heart 243 



pacemaker in Mytilus heart 246 



decompression, effect on ciliary beat 142 



Delauney, H., excretion 274 



uric acid in Mya and C. angulata 277 



demibranchs 121 



movements of 131 



Dendoslrea 6 



Denison, J. G., Hcxamila 419 



Dennell, R 58 



462 



Page 

 Dermocystidium, cause of mortality 415 



effect on oysters 4ig 



growth in tissue culture 415 



occurrence in various bivalves 416 



Dermocystidium marinum, diagnosis of species 416 



DeRobertis, E. D. P 133^ 1(34 



destruction of oyster bottoms by man 440-441 



detritus, as food 232 



development rate 349-350 



De Waele, calcification theory 95 



dextrose, effect on R. Q 213 



effect on water transport 199 



diamond lattice pattern, in dark muscle fibers 154 



in muscle fibrillae 157 



diantlin 312 



diapedesis 83, 185, 239 



diastole 244 



diatoms, as food 231, 232 



on oyster shells 428 



diatom growth, stimulated by pulp mill pollution.. 444 



Dicrateria, sp., as food of larvae 375 



Diederichs, W., nervous control of heart beat 250 



digestion 219, 228-23 1 



extracellular 231 



digestive diverticula 71, 226 



ducts 226 



histology 226 



pH of extracts 231 



digestive system 219 



digitalin, effect on ciliary motion 141 



dimensions of shell 20 



Dimitroff, V. T., spirochaetes 426 



Dimick, R. E., Yakina Bay oyster beds 402 



Diplolhyra, in Texas 421 



Diplolhyra smithii, synonym Mariesia 421 



direction of growth 25 



change in 27-29 



direction plane 25 



in Pecten 24 



disease 415 



Divaris, G. A., heart physiology 246 



heat beat 251 



Dobson, G. C, capacity of reservoirs 412 



Dollfus, R. P., foot disease 418 



Dosinia discus 30 



Dotterweieh, H., calcification 96 



Douville, H 39 



Dow Chemical Company, analysis of shell 44 



DPN (diphosphopyridinc nucleotide) in muscle 168 



dredging, effect on oyster bottom 398 



Dreissensia (Dreisensia) polymorpha, develop- 

 ment 346, 368 



neurosecretion 312 



Drew, G. H., blood cells of bivalves 262 



drills, destructiveness 430 



dispersal of 430 



effect of low salinity 430 



Drinnan, R. E., Malpeque Bay disease 4' 5 



drop counter, electric 190 



drop counting technique 197 



drugs, effect on ciliary motion. 140 



effect on heart 251, 252 



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