INDEX. 
Sea Horse (Hippocampus), 527. 
Sea Lampreys, 499. 
Sea Level, 12. 
Sea Mussels, 361. 
Sea Nettles, 197. 
Sea Palm, 274. 
Sea Pen, 141 — 146. 
Sea Slug, 402. 
Sea Snail (Liparis), 536. 
Sea Stars (Asfcrea), 157. 
Sea Urchins, 283. 
Sea water, its components, 17. 
Section of a Coral branch, 134. 
Section of Atlantic Telegraph, 10. 
Seiue Net, 576. 
Selachians, 501. 
Sepia (Cuttlefish), 446. Its Suckers, 447, 
448. 
Sepia officinalis, 465. 
Sepia tuberculosa, and bone of S. offici- 
nalis, 466. 
Sertulariadaa, 213. 
Shad, the (Alosa), 572. 
Shallow water, its temperature, 29. 
Shark (Carcbarius vulgaris), 508. 
Shark fishing, 510. 
Shell of the Mollusca, 319. Is it a 
skeleton ? 320. How built up, 321. 
Shell of the Strombus, 435. 
Ship-worm and its ravages, 385. Its 
organization, 386. Reproduction, 387. 
Its boring hood, 389. 
Siderolites calcitrapoides, 86. 
Silver in the sea, 24. 
Siphonophora, 230. 
Skeleton Echinus, 290. 
Skeleton of the Perch, 494. 
Smolt, 555. 
Snails: Form and characteristics, 394. 
Their organization, 395. Breathing, 
395. Circulation, 395. Sight, 396. 
Reproduction, 396. Shell, 396. Their 
reputation with the Classics, 397. 
Solarium perspeoticum, and S. varie^a- 
tum, 413. 
Solar-lunar tides, 41. 
Soles (Solea vulgaris), 539. 
| Sophonophora, 200. 
Spearing Halibut, 543. 
Spey Salmon, 558. 
Spherical form of the Earth, 12. 
Spirolocnlina, 84. 
Spondylus, various, 350. 
Spongia, half natural size, 112. 
Spongia, 109. Their generation, 110. 
Organization, 111. Localities, 111 
Varieties of, 117. 
Spontaneous division of Infusoria, 96. 
Spontaneous generation, 97. 
Squalid*, 508. 
Stat-fishes, 157, 262. Their metamor- 
phoses, 269. Dismemberment, 270. 
Suicidal propensities, 270. 
Star-fishes and Oysters, 268. 
Stentor Miilleri, 106. 
Stinging apparatus of Physophora hydro- 
statics, 240. 
Stinging tentacles of Physalia, 249. 
Stomach of Infusoria, 94. 
Stomia bea, 560. 
Strombus gigas, shell and animal, 434. 
Stone lilies, 278. 
Stormouthfield fish-ponds, 555. 
Straits of Gibraltar, 38. 
Sturgeon (Acipenser sturio), 517. 
fishing in the Volga, 518. 
Sturiona, 515. 
Stylaster flabelliformis, 156. 
Sub-branchiata, 536. 
Submarine currents, 37. 
Subsidence, theory of Coral islands, 180 
Suckers of Star-fishes, 266. Suicidal 
tendency of Star-fishes, 271. 
Swimming bladder, 494. 
Sword-fish (Xiphias), 590. Warlike 
habits, 59 L. Fishing, 592. 
Symphyuota, 355. 
Synapta duvernea, 301. 
Succinea putris, 401. 
Tabulate madrepores, 165. 
Teeth of the Bream, 497. 
Carp, 497. 
Gold-fish. 497. 
