410 



INDEX. 



Sclimarda on chj-le-coi-puscles in the 

 Actiniae, 259. 



Science, deliLrhts of, 43. 



Scilly Isles, selection of, for sea-side 

 studies, 181 — voyage and landing at, 

 184 et seq. — first sight of, 187^de- 

 scription of them, 188 — origin of their 

 name, 192 — historical notices of them, 

 193— the population, 194 — geological 

 conformation of the, 227 — their cli- 

 mate, 229 — departure from the, 267. 



Sea, attractions of the, 4 — aspect of 

 the, its shore, &c. at Ilfraconibe, 9 — 

 sources of its interest, 26 — passion 

 for it, 93 — passion of Englishmen for 

 it, 198 — the poets on it, 269 — source 

 of its phosphorescence, 326, 327. 



Sea Anemones, the digestion of the, 

 207, 214 el sen. See Anemones. 



Sea-hare, the, 21 — supei-stitions regard- 

 ing it, 22 - the shell rudiment in it, 

 247 — at Jersey, 275. See also Aplysia. 



Sea-mouse or Aphrodita, blood of the, 67. 



Sea-scene, a, at Ilfracombe, 26. 



Sea-sickness, 90, 92, 186. 



Sea-slugs, see Eolids. 



Sea-ui'chiu, the, 240. 



Seeing, see Vision. 



Segond on nei-ve-fibre, 377 nofe. 



Sennebier, discovci-y of the decomposi- 

 tion of carbonic acid by plants by, 

 232. 



Sensations without -^-isible nerves, on, 

 353. 



Sensibilit}' to pain a specialisation of, 

 334 — existence of, apart from nervous 

 sj'stem, 370 — manifested without 

 nerves, 389 — definition of, and whence 

 derived, 391 — specialisation of, 391, 

 392 — does not necessarily imply 

 senses, 394. 



Scrjmla;, the, 66 — abundance of, 12. 



Sertularian Polypes, reproduction in 

 the, 312. 



Seven Tors, the, Ilfmcombe, 8. 



Sex, detemimation of, in the Ane- 

 mones, 163. 



Sharpey, Professor, on the structure, 



&c. of the nerve, 374. 

 Shelled and nuked Molluscs, the, 247. 

 Shells of Molluscs, the, 357. 

 Shovel. Sir Cloudcsley, scene of the 



shipwreck of, 220. 

 Siebold, see Von Siebold. 

 Silk-worm, peculiarities of generation 



in the, 290. 

 Skin, universal sensibility of the, 353. 

 Sleep, influence of, on respiration, 235. 

 Slug, insensibihty of the, to pain, 331. 



Smooth Anemone, the, 12 — where 

 found, 16. 



Snails, vitality of various, 340, 341. 



Society at the sea-side, on, 29. 



Solen, irritability of the, after death, 

 332 — how to catch the, 361 — salting 

 their tails, 363 — the nci-vous system 

 of the, 373, 374. 



Solitary Ascidians, the, at Jersey, 275. 



Solubility, necessary to assimilation, 

 211. 



Solvent fluid, the supposed, in the Ac- 

 tinia;, 214, 215. 



Sperm-cell, hypothesis as to function of 

 the, 318. 



Sperm-cells, assumed necessity of, to 

 growth, 309 — and germ-cells, repro- 

 duction by union of, 316. 



Spermatozoa, present with ova in the 

 Anemones, 164 et seq. 



Spinal chord, new views regarding the, 

 378 ct seq. 



Spix, researches of, on the Anemones, 

 118. 



Sponges, the circulation of the, 255. 



Star Castle, Scilly Isles, 187, 193. 



Star-fish, a suicidal, 241 — the Pedicel- 

 laria of the, 368. 



Steenstrup on Parthenogenesis, 281, 

 287, 321— his theory of it, 299. 



Stilling on the neiTous system, 369 

 note — on nen'c cells and fibres, 372 

 7iofe — on the nerve-sheath, 387. 



Stinging power of the Anemones, the 

 alleged, 129. 



Summer, delights of, 323. 



Sunlight, influence of, on plants, 232. 



Swammerdamm on the lilood of the 

 Annelids, 67 — on the Hermit crab, 

 244. 



Syllis, gemmation of the, 61 — Parthe- 

 nogenesis among, 291. 



Syngnathus anguineus, the, 203 — pe- 

 culiarities of the, 236, 237 — the nerv- 

 ous system of the, 376. 



Tadpole, a Molluscan, 279. 



Tcale, Mr, the ovaries of the Actinite 

 described by, 161 ?tote, 162. 



Temperature, influence of, on genera- 

 tion, 314 — vision dependent on, 348 

 ct feq. 



Ten Thous.and, the, and the Sea, 198. 



Tenby, compared with Ilfracombe, 5 

 — .sands, 72. 



Tcntiicles of Annelids, &c., Williams on 

 the, 69. 



Tercbella, the, 24 — vitality of its sepa- 

 rated tentacles, 5Q — gemmation of 



