Pag* 

 Tuekerman's formula, for determining concentra- 

 tion of pollutant ill estuary 402 



Tullberg, T., growth of shell 48 



subligamental ridge 89 



turbidimeter 193 



turbidity determinations 193-194 



Turchini, J., excretion 274 



Turner, R. D., taxonomy of boring clams_- 421 



Twenhofcl, W. H., sedimentation 410 



Tyler, A., acrosomal reaction 341 



fertilizin 340 



Tylosurus marinus, host of Bucephalus 420 



typhlosole 224, 225, 226 



tyrosin, in conchiolin 103 



Uexkull, J., catch mechanism of scallop 165 



ultraviolet light, in study of ciliary current 115 



Ulva 428 



umbo 16 



umbo larva 357 



Unionidae, excretion rate 274 



Upogebia 439 



urea, in excreta of Mija and Mytilus 276 



urease, in Mijlilus and Helix 277 



uric acid, absent in Mytilus, traces in Mya 277 



in intestine 277 



urine formation 274 



urino-genital groove 70 



urino-genital vestibule 303 



Urosalpinx cinerea 430 



dimensions 430-43 1 



egg laying 432 



fertility 432 



manner of drilling 431 



rheotaxis 43 1 



selection of food.. 431 



Urosalpinx extract, effect on mantle 294 



U.S. Public Health Service 441 



Vaillant, L., Tridacna Ugament 59 



valve, equation of 24 



Van Dam, L., respiration studies 204 



syringe pipette 204 



utilization of oxygen 214 



Vasseur, E., jelly coat of eggs 340 



vaterite 103 



veins 84, 254 



afferent 254 



afferent, structure 257 



efferent _" 257 



velar retractors 359, 361 



veliconcha 358 



veliger 356 



advanced stages 359 



anatomy 357 



velum 356, 357 



disintegration in metamorphosis 367 



venous system 254 



ventilation, of gills 185, 214 



ventricle of heart 240 



peristaltic wave 243 



rhythm of 251 



SUBJECT AND AUTHOR INDEX 



Page 



Venus verrucosa, ligament elasticity 59 



veratrine, effect on cilia 140 



effect on heart 253 



Vernon, H. jSI., respiratory quotients 212 



Veselov, E. A., toxicity of crude oil 444 



vestibule 70 



vesicular cell 79 



Verwey, J., selection of bottom by larvae 399 



Viallanes, H., use of silt in determining water 



transport 193 



\'incent, D., acetylcholine content in heart 252 



\'inogradov, A. P., chemical composition of shell.. 44 

 vinyl acetate plastic, used for blood venous injec- 

 tion 253 



vinyl resin, used for injection 66 



visceral ganglion, extirpation has no effect on ciliary 



motion 147 



visceral mass 71 



viscosity of water, effect on work of cilia 146 



vitamin D 391 



vitamins in oysters 391 



vitelline membrane 343 



Voisin, P., shell disease in European oyster 418 



Volsella, aragonite in shell 104 



Wada, S. K., acrosomal reaction 341 



Wait's perfusion chamber 248 



Waksman, S. A., decomposition of sediment 413 



Wallengreen, H., labial palps 113 



ciliary currents 142, 146 



Walne, P. R., rearing of larvae 375 



Walzl, E. M., action current in heart 244 



Wangersky, P. J., dehydroascorbic acid in sea 



water 198 



Warburton, F. E., Cliona's manner of boring 420 



waste, amount discharged into coastal waters 441 



importance of sublethal concentrations of — 444 



industrial. 443 



oxidation of 444 



radioactive 445 



waste products 276 



water content, in oyster meat, seasonal changes 386 



water demand, by oyster community 403 



water filtration, by oysters. . . 186-192 



rate, J0rgensen formula 194 



water movements on oyster beds 400-403 



water movement factor, evaluation of 403 



Water Pollution Control Acts 441 



water propulsion, rate of 193 



water transport by gills, control of 194, 197 



water transport by four species of oysters, deter- 

 mined by turbidity method 193 



direct methods of determination 186 



indirect method of determination 186, 193 



reduction due to slowing of lateral cilia 197 



regulation of I'^S 



simultaneous recording of the rate of water 



transport and shell movement 187 



water transport and shell movement 196 



water tubes "1. '^6 



water wheel, use in recording water transport 180 



Watt, B. K., chemical composition of oysters 381 



479 



