INDEX. 



[The Fossils, the names of which are printed in Italics, are figured in the volume.'] 



Abich, M., on trachytic rocks, 46T. 



Acrodus nobilis, tooth of, 321. 



Acrolepis Sedgivickii, scale of, 854. 



Actceon acutus, great oolite, 308. 



Actlnolite-schist, 590. 



yEc/unodus, scales and outline of, 321. 



.^gean Sea, mud of, 35. 



. . .., animal life in depths of, 136. 



^piornis of Madagascar, 348. 



Agglomerate, volcanic rock, 471, 472, 



Agnostufi integer, A. rex., 450. 



Agassiz, M., cited, 87, 217, 321, 849, 896, 415, 418. 



..., on fossil fishes of molasse and faluns, 170. 



. . ., on fossil fish of lias, 320. 



..., on fossil fish in Permian marl-slate, 353, 



..., on fisii from Sheppey, 217, 



..,, on footprints, 848. 



. . ., on fishes of brown-coal, 540. 



. . ., on glaciers, 146, 149. 

 Age, test^of, by fragments of older rock, 101. 

 of metamorphic rocks, 611. 

 , test of, in plutonic rocks, 573. 

 , of Spanish volcanoes, 536. 

 , of volcanic rocks, how tested, 519, 522, 

 Air-breathers in coal, rarity of, 401. 

 Aix-la-Ch.»pelle, hot springs at, 573. 

 Alabama, cretaceous shingle of, 255. 

 Alabaster defined, 13. 

 Alberti on the Keuper, 333, 

 Alexander, Capt., marine shells in crag found 



by, 155. 

 Alluvium, term explained, 79, 



, formation of, 81. 



. , . . in Auvergne, 80. 



Alpine blocks on the Jura, 148. 



.... erratics, 146. 



Alps, curved strata of, 58. 



...., elevated fossiliferous rocks in, 4. 



...., nummulitic formation of, 230. 



, of Switzerland, 613. 



, Swiss and Savoy, cleavage of, 601. 



Altered rocks, 479. 



by subterranean gases, 595. 



Alternations of rocks, 14. 



of marine and freshwater formations, 32, 



Alnm-schists. Silurian, of Sweden, 451, 

 Alumine in rocks, 11. 

 Aonhlyrliynchtis cristatus (recent) 325. 

 America, North, Lithodomi in beaches of, 73, 

 ...., South, cretaceous strata, 255. 

 ,..., South, fossils of, 163. 

 ...., South, gradual rise of parts of, 46. 

 A'>nmonites hi/rn7h% A. Nodotianus,?, A.stri- 



atulits, A. Walcoiti), 319; A. Braiken- 



ridgii, A. margaritatus, A. Stokesii, A. 



striatulus, 316; A. Elizabethoe; A. Jason, 



304; A. Huivphresianus,Slo; A. lihotoma- 



gensis, 251. 

 Ampelite, or aluminous slate, 590. 

 Ami»hibole, 465. 



Amphibolite, or hornblende rock, 472, 590, 

 Amphintegina Ilauerina, eocene, 179. 



AmphWieHum Broderipii, ja.yv of, 311, 



.... J'revostii, jaw of, 311, 



AmpuUaria glaiica (recent), 30. 



Amsterdam, or St, Paul Island, 508. 



Amygdaloid, 463, 



Ananchytes ovatvs, chalk, 243. 



AncUlaria suhulata, eocene, 31, 



Ancyloceras gigas, 258 ; A. spinigerum, 251. 



Ancylus elegan-i, pleistocene, 29. 



Andclys, chalk-clitfs at, 268. 



Andernach, strata near, 540. 



Andes, plutonic rocks of, 577, 



. , . .. rocks drifted from, to Chiloe, 150. 



Andesite, 467, 



Anodonta Cordierii, A. latimarginaius (re- 

 cent), 28. 



Anoplotherium commune, tooth of, 210. 



gracile, outline of, 225. 



Anthophyllum lineatum, 182. 



Antholithes, coal, 371. 



Anthracite in Rhode Island, 597. 



Anticlinal line, 43, 57. 



Antrim basalt, age of, 180. 



...,, rocks altered by dikes in, 480. 



Antwerp, strata like Suffolk crag near, 173. 



Apateon pedestris, a carboniferous reptile, 396. 



Aphanite, or cornean, 472. 



Apennines, limestone in, 478. 



Appalachian coal-field, 889. 



Appalachians, altered rocks in, 596. 



Apiocrinites roticndus, oolite, 306. 



Apiychus lafus, oolite, 802, 



Apteryx in New Zealand, 164^ 



Apus f duhius, coal, 335. 



Aqueous rocks defined, 2. 



.... rocks, mineral character of, 97. 



deposits, superposition of, 96. 



Aralo-Caspian formations, 175. 



Arbroath paving-stone, 415. 



, section from, to the Grampians, 48, 



Archpgosaurus medius, skin of, A. minor^ 

 coal-measures, 397, 



Archiac, M. d', cited, 149. 



, on fossils in chalk, 251. 



, on shells in French lower eocene, 228. 



Ardeche, lava in, 484. 



Arenaceous rocks described, 11, 



Argillaceous rocks, 11, 



. , . . schibt, 589. 



Argile plastique, or lower eocene, 229. 



Argyle;hire, trap-vein in clitf, 477. 



Arsyll, Duke of, on Isle of Mull tertiarios, 179. 



Arkose, 590. 



Arran, age of granite in, 583, 



..... section of, 585. 



Arran, dike of greenstone in, 477. 



Arrangement oi fossils in strata, 5, 21. 



Arthur's Seat, altered strata of, 481, 



Af'vicola, tooth of, 167. 



Asaphus tyrannus, lower Silurian, 440. 



Aspiduralofieata, Permian, 334. 



Astarte hipartita, A. Omalii, 171. 



