GENERAL INDEX 



819 



Sea-pens, 87, 88, 482, 500 



Sea-scorpion, 535 



Sea-slugs, 477, 482, 486, 492. 519, 523. 540, 



555 

 Sea-spiders, 486, 497, 520 

 Sea-squirts, 497, 498 

 Sea-tooth [see Scaphopoda) 

 Sea-trees, 485, 486 

 Sea-trout, 646 

 Sea-urchins, 120, 419, 420, 430, 465, 473, 



478, 493. 519. 538, 547, 558, 576 

 Sea-water, chemical composition of, 175, 176, 



235 



compressibility of, 246 



ionic dissociation of salts in, 195 



transparency of, 253, 666, 671 



samples, methods of obtaining. 230 

 preservation of, 235 

 Sea-weeds, 145, 335-337, 3^9 

 Seals, 692 

 Seiches, 16, 278 

 Seine Bank, 178, 195 

 " Seine," The, 19 

 Seine-net fishing, 76. 77 

 Selachii, 388, 390-392 

 Sepiidse, 597 

 Sepiolidae, 597 

 Sergestidas, 585 

 Serpulids, 418, 463, 473 

 Serranida;, 390, 402, 614 

 Sertularians, 87, 419 

 Shad, 448 



Sharks, 64, 424, 436, 455, 635, 644, 646, 

 647, 698 



blue, 635, 644 



Greenland, 647 



hammer-head, 635 



herring, 646 

 Sharks' teeth, 87, 149, 156, 157, 160, 166, 



171, 418, 419 

 " Shearwater," The, 11 

 " Sherard Osborn," The, 19 

 Shoals, oceanic, 13 

 Shore slopes, 135, 137, 139 

 Shrimps, 496 

 " Siboga," The, 17 

 Sideromelan, 153 

 Sigsbee Deep, 196 

 Sigsbee's dredge, 32 



method of trawling, 31, 42, 45 



sounding machine, 29 



trawl, 33, 42 

 " Silderaek," 641 



Silica, 145, 183-185, 1S6, 187, 188. 36S 

 Silicates, 185, 187, 189. 190 

 Siliceous deposits, 162 



remains in marine dejiosils, 14S, 149 



sponges, 467 

 Silicic acid (see Silica) 

 Silicoflagellates, 358, 365 

 " Silvertown," The, 19 



Sinking of air-filled capsule, 247 



of solid body, 247 

 Siphonophora, 98, 574, 631, 640, 641, 642, 



692, 696, 719 

 Sira-plankton, 345 

 Six's thermometer, 4, 215 

 "Size of projection," 693 

 Skate, 64, 79, 441, 442, 451 

 " Skjasrgaard," 227, 460 

 Snails, 462, 467, 469, 471, 477, 480, 489, 

 493, 494, 502, 517. 521, 522, 575, 671 

 Sogne fjord, 55, 22S, 240, 277, 303, 481, 



574 

 Solenidte, 475 

 Soles, 64, 69, 79, 440, 441, 442, :443, 448, 



449, 451, 452, 453, 646 

 Sounding by bathometer, 2 

 by hand, 2, 130 

 by hemp-line, 23, 24, 25, 26, 27, '28, 29. 



' 130 

 by wire, 5, 12, 27, 28, 29, 130 

 deepest, 17, 131 

 first abysmal, 5 

 first attempt at deep-sea, 2 

 Sounding machine, Baillie's, 25, 26 

 Brooke's, 8, 9, 130 

 Hooke's, 2, 209 

 Le Blanc's, 29 

 Lucas's, 29, 30, 39, 40, 130 

 Sigsbee's, 29 

 Thomson's, 28 

 Soundings first shown on maps, 2 

 Spanish Bay, 57, 65, 68, 69, 72, 292-295 

 Sparidaj, 69, 390, 403-405, 433, 444, 448 

 Spatangids, 474, 475, 476, 490, 491 

 Specific gravity of sea-water, 689, 690, 691, 

 692, 694, 695, 696, 698, 699, 700, 710, 

 716, 721, 722, 723, 724, 725, 777 (see 

 also Density) 

 surface, 692, 693 

 Spheroid of revolution, the earth as a, 129, 132 

 Spinacidte, 388, 391, 675 

 Spirulidis, 597 



Sponges, 10, 72, 95, 419, 420, 483, 484, 



486, 498, 500, 504, 505, 506, 507, 508, 



510, 517, 519, 521, 524, 525, 534, 539, 



559 



Sponge spicules in marine deposits, 148, 183 



Sprat eggs, 731 



larvK, 731 

 Sprats, 91, 601, 645, 759, 761, 762, 765, 



766, 771, 782 

 " Sprungschicht " (see Discontinuity layer) 

 " Sprut," 648 

 Squid larvce, 631 



Squids, 112, 113, 590, 591, 592, 624, 625, 

 627, 632, 642, 643, 645, 646, 648-649, 

 650, 651, 669, 674, 675, 676, 678, 682, 

 685, 699, 706, 782 

 " Stale" water, 257 

 Stalk-eyed fishes, 86, 103. 108 



