ANALYTICAL INDEX. 



117 



fecundity of the oyster, xi., 280 ; 

 conditions necessary to secure repro- 

 duction, xi., 281-284 > fd f y s- 

 ters, xi. , 284, 384 ; conditions neces- 

 sary for fattening, xi., 285 ; cause of 

 the green colour of oysters from cer- 

 tain localities, xi., 285, 357, 402 ; the 

 building of the shell, xi. , 286 ; pro- 

 portion of animal to inorganic matter 

 in shells of oysters from different loca- 

 lities, xi., 287 ; enemies of oysters : 

 skates and rays, xi. , 289, 394 ; oc- 

 topods, xi., 289 ; starfish, sea 

 urchins, &c., xi., 290, 394; crus- 

 tacea, xi. , 294, 394 ; whelks and 

 whelk-tingles, xi., 296; living things 

 indirectly injurious to oysters : mus- 

 sels, xi., 299, 393 ; cliona, xi., 300 ; 

 weed, sabella, barnacles, &c., xi., 

 302 ; annelids, poch, polyps, blubber, 

 &c., xi., 302 ; inanimate things in- 

 jurious to oysters: sand, xi., 303; 

 mud, xi., 305, 393 ; fresh water and 

 rain, xi., 307; ice, frost, &c., xi., 

 308, 393 ; sewage, pollution of rivers, 

 &c., xi., 309 ; influence of natural 

 causes on the formation of oyster- 

 beds : temperature, xi., 313, 383 ; 

 depth and density of the water, xi., 

 316, 382 ; tides and currents, xi., 

 316; nature of the sea-bottom, xi., 

 317 ; influence of artificial causes: 

 dredging, xi., 318; steam-dredgers 

 and ordinary dredgers, xi., 321 ; 

 hand-dredging, xi., 321 ; harrow- 

 ing and trawling, xi., 324; rings for 

 measurement of oysters removed from 

 beds, xi. , 326 ; removal of culch from 

 public grounds, xi., 328 ; artificial 

 cultivation: foreshore bedsand parks, 

 xi., 329, 398; summer layings, xi., 

 330 ; breeding and fattening distinct 

 branches of oyster culture, xi., 334 ; 

 influence of the soil on oyster cul- 

 ture, xi., 335; breeding, xi., 336; 

 collectors of spat : fascines, xi., 339 ; 

 hurdles, xi., 341 ; slates, xi., 341 ; 

 stones, xi., 341, 398; tiles, xi., 342, 

 398; ruches, xi., 345; chaplets, xi., 

 345. 399; culch, xi., 346, 398; 

 treatment after adhesion of spat to 



collectors, xi., 346, 399; fattening at 

 Whitstable, xi. , 348 ; and in France, 

 xi., 401 ; cultivation in the river 

 Colne, xi., 351 ; in the Essex creeks, 

 xi., 352; tank system of cultivation, 

 xi. , 354, 400 ; its commercial pros- 

 pects, xi., 405, 409 ; groundless 

 prejudice against green-bearded oys- 

 ters, xi., 357 ; summary of the prin- 

 ciples to be observed in oyster cul- 

 ture, xi., 359 ; dredging and over- 

 dredging, xi., 359; consideration of 

 the policy of granting concessions of 

 public grounds to private individuals 

 or companies, xi., 366-374; sugges- 

 tions as to future legislation respect- 

 ing the oyster fisheries, xi., 374 j 

 desirability of the appointment of a 

 permanent fishery commission, xi., 

 375 ; and of the employment of the 

 coast-guard for the protection of the 

 fisheries, xi., 375 ; description of the 

 oyster, xi., 380; its geographical 

 distribution, xi., 381 ; nature of its 

 habitat, xi., 381 ; character of the 

 water most suitable for oysters, xi., 

 382 ; organs of reproduction, xi., 388 ; 

 impregnation of the eggs, xi., 389; 

 subsequent development, xi., 391 ; 

 dangers to which young oysters are 

 exposed, xi., 393, 394 ; parasites, xi., 

 394; record of the cultivation of 

 shell-fish by the Arabians, xi., 395; 

 culture of oysters by the Dutch, xi., 

 395, 402 ; by the Germans, xi., 404 ; 

 oyster culture in England, xi., 405 ; 

 possibility of creating fresh oyster 

 beds discussed, xi., 409 ; artificial 

 impregnation of eggs its possibility 

 discussed, xi., 410; value of Danish 

 oyster fisheries, xiii., 80 ; oyster fish- 

 eries of Sweden, xiii., 83 ; statistics of 

 French oyster fisheries, xiii., 100; 

 the oyster probably the most valuable 

 product drawn from the ocean, xiii., 

 ill; possibility of exhausting oyster 

 beds, xiii., 136, 145 ; causes likely 

 to bring this about, xiii., 146 ; 

 plans suggested for preserving the 

 oyster, xiii., 146-148; failure in 

 recent years of the Greek oyster 



