INDEX. 
605 
Teeth of the Trout, 497. 
Tellina radiata, 377. 
sulphurea, and T. donacina, 378. 
virgata, 377. 
Temperature of the sea, 26. 
Tentacles of Molluscs, 304. 
Tentaculiferous Cephalopods, 470. Then- 
suckers (Acetabula), 470. 
Teredo navalis, its ravages, 385, 386. 
Testacella haliotidea, 403. 
Textilaria, 83. 
Thalassianthidai, 193. 
Thames Oyster beds, 330. 
Thermal lines of sea temperature, 27. 
Thynnus pelamys (thoBonito), 584, 590. 
Tidal wave, 41. Its height in different 
seas, 42. Of the Atlantic, 29. 
Tides, 39. 
Torpedo marmorata, 504. 
Trachinus communis, 579. 
Trade-winds, their origin, 33. 
Trembley’s discoveries, 109. 
Tridacna gigas, 372. 
squamosa, 373. 
Triton variegatum, T. lotorium, and T. 
anus, 431. 
Trochus agglutinans, T. stellavis, 412. 
inermis, T. Ckiokii, T. imbricatus, 
and T. agglutinans, 411. 
Trochus niloticus, and T. virgatus, 410. 
Tubelarid*, 228. 
Tubipora musica, 122. 
Tubiporinse, 122. 
Tubulous madrepores, 152, 
Tunieata, 311. 
Tunny fish (Thynnus), 584. 
. — fishing, 585. 
net, 586. 
Turbinolia, 152. 
Turbo imperialis, 414. 
margaritaceus and T. argyrostomus, 
413. 
Turbo undulatus, 414. 
Turbot (Bhombus), 539. 
Ultima Thule, 47 . 
Umbellularia Greenlandica, 145. 
Unio littoralis, and U. pictorum, 371. 
Uranoscopus vulgaris, 580. 
Uses of salt in the sea, 29. 
Vastness of the oceanic fields of observa- 
tion, 67. 
Vegetable life, 67. 
Venus verrucosa, 378. 
Veretillum cynomorium, 146. 
Vctrina fasciata, 402. 
Vibracule in molluscs, 304. 
Vibrion baguette, 100. 
Vilelladas, 231. 
limbosa, 231. 
Virgularia, 144. 
mirabilis, 145. 
Volvox globator, 102. 
Walsh’s, Dr., experiments with the Tor- 
pedo, 506. 
Water, 3. 
Watering-pot, the, 389. 
Water-lilies, 308. 
Waves off Capo Horn, 45 . 
Weddell’s discoveries, 48, 55. 
Weavers (Trachinus), 579, 580. 
Weight of the waters of the sea, 13 
of equatorial waters, 32. 
Whence comes the salt, of the sea? 25. 
Whirlpools, 46. Seylla, 46. 01iarybdis,46. 
White Bay (Bala batis), 502. 
Whiting (Merlangus vulgaris), 551, 552. 
Whorled Gorgon, magnified, 126. 
Wilkes’ expedition, 48, 55. 
Willoughby’s discoveries, 47. 
Winds, 43. Effect on tides, 43. 
Wrasse (the), Lahrus, 594. 
Young Oysters, 328. 
Young Polype attached to a rock, 137. 
Zenith points, 40. 
Zoantharia, 149, 161. 
Zoantha thalassauthos, 150. 
Zoanthus socialis, 195. 
Zone of Calms, 34. 
Zoophytes, 71. Its derivation, 72. 
