360 



Index 



Scallops : 



supposed migration of, 337 

 preparation of, for market, 



335 



high price of, 334 

 seed, 348 

 shell of, 333 

 swimming habit of adult of, 



336 



of embryo of, 341 

 Scientific experiment, bottoms 

 reserved for, in Louisiana, 

 267 



Seaweeds, their effect on the 



feeding of oysters, 127, 163 



Seed oysters, care of, after 



planting, 126 

 end of importation of, from 



the South, 190 

 planting of, 104 

 sent from New York to the 



Pacific, 272 

 size of, 101 

 source of, 105, 202 

 from the South to be used in 



New England, 105, 189 

 Sex, change of, 189 

 Sexual organs of bivalves, 24 

 Shad, introduction of, into the 



Pacific, 270 

 propagation of, 7 

 Shell accumulations in Louisi 



ana, 261 

 appearance of, in the embryo, 



47 

 destruction of, by decaying 



organic matter, 282 

 as oyster collector, 261 

 thin, cause of, 189 

 Sheepshead as an oyster enemy, 



159 



Shipping of oysters, 145 

 Shucking of oysters, 144 

 Siphon, structure and function 



of, 20, 57 

 Slime on collectors, 122 



organisms, 123 

 Soft clam (Mya arenaria), beds, 



digging of, beneficial, 288 

 breeding habits and develop- 

 ment, 290 



breeding season of, 290 

 burrowing of, 284 



Soft clam: 



byssus attachment of, 293 



creeping habit of, 293, 294 



culture, 306, 307 



dense segregations of, 288, 

 292, 308 



disappearance of, 277, 318 



distribution of, 278, 283 



effect of varying salinity on, 

 288, 313 



experiments on, culture, 299 



former abundance of, in New 

 England, 277 



growth of, 300, 301, 302 



introduction of, into the Pa- 

 cific, 9, 270 



"juice" of, 279 



market for, 319 



methods of planting, 311, 312 



natural enemies of, 289, 294 



New England Laws govern- 

 ing culture of, 305 



nomenclature referring to, 

 280 



position of, on the shore, 277, 

 282 



seed, 300, 307, 313 



settling of, 292, 308 



shells of, in kitchen middens, 

 177 



siphon tubes of, 281 



yield per acre of, 314 

 " Sound stock," 127 

 Spat, constancy of the set of, 

 in the Gulf of Mexico, 46 



set of, influenced by tempera- 

 ture, 46 



in 1899, 1 06 

 Spawning season (see Breeding 



season) 



Species, structure indicating re- 

 lationship of, ii 



Spermatozoon, union of, with 

 ovum, 43 



structure and function of, 40 

 Sponge as an oyster enemy, 162 

 Starfish, absence of in Louisiana, 

 263 



distribution of, 149 



as a clam enemy, 294 



as an oyster enemy, 148 



in European waters, 82 



food of, 151 



