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 Soirth 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 (Alva 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, 

 . 1/7 

 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, 106 

 Spawning season (see Breeding 



season) 

 Species, structure indicating re- 

 lationship of, 11 

 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 



