INDEX. 



A. 



Academy of Sciences, (Paris) proceed- 

 ings, 89, 125, 



Agassiz's theory of glacial action, 11. 

 — Review of Agassiz's " etudes sur les 

 glaciers," 193. On the fossils of the 

 Devonian system, 257. 



AUport — on tooth of the Lophiodon in 

 London clay, 66. 



Amalgam, (native) of Arqueros, 166. 



Ammonites, (zoological geological and 

 geologico - geographical considerations 

 on), 38, 68, 99, 135, 277, 309, 333.— 

 External characters, 39. — Modifications, 

 41. — Natural varieties, 41. — Accidental 

 varieties, 42.— Varieties from sex, 43.— 

 Varieties from age, 68. — Mouth of Am- 

 monites, 74.— Size of Ammonites, 82. — 

 Internal characters, 99. — Functions of 

 the Septa, 99.— Form of Septa, 100.— 

 Varieties of Septa from age, 103. — 

 Number of lobes, 105.— Irregular Septa, 

 109. — Affinities between external and 

 internal characters, 135. — Division into 

 groups, 137.— Number of species, 277. 

 — Cretaceous foi-mations divided, 279. 

 — Species peculiar to upper neocomien, 

 311 —To the gault, 312.— Relation be- 

 tween zoological characters and geolo- 

 gical epochs, 320. — Geologico- geogra- 

 phical considerations, 331. — Summary, 

 349. 



Anthosiderite, (constitution of) 85. 

 Appalachian chain, (structure of) 235. 

 Arrangement of minerals by Beudant, 

 127. 



B. 



Beaumont, (Elie de) on the inclination 

 of the highest limit of the erratic 

 zone, 356. 



Belemnites, (report on) by Phillips, 255. 

 Belemnites des basses Alpes, (review,) SO. 

 Beraunite, 220. 



Beudant's arrangement of Minerals, 127. 



Binney on the Manchester coal-field, 289. 

 —On the geology of South Australia, 

 117.— On the fossil fishes of the Man- 

 chester coal-field, 56. 



Biographical notice of J. E. Bowman, 35. 

 — R. Mudie, 163. 



Blue clay, (bones of the ox in) 36. 



Blowpipe, (tests of simple earths and 



metals before the) 165. 

 Black earth of Russia, 174. 

 Bone Cave in Mexico, 168, 

 Bristol bone bed, 54. 



Brighton railway, (nature of eai*th-slip on 

 the) 116. 



British Association— proceedings, 232, 281. 



—Report, 233.— Grants for Geology, 234. 

 Brodie, (Rev. P. B.) on fossil plants in 



plastic clay at Bournemouth, 121. — On 



i-emains of insects in Lias, 296. 

 Boulders in the valley of the Calder, 297. 

 Buckland on diluvio-glacial phenomena in 



Snowdonia, 51. 

 Buckman on lias beds near Cheltenham, 



14. — On oolite formation of the Cottes- 



wold Hills, 199. 



C. 



Calabria, (coal formation of) 166. 



Cambrian rocks— propriety of appella- 

 tion, 129. 



Cheltenham, (lias beds of) 14. 



Chelone, (Owen on six fossil species of) 

 48. — breviceps, 49. — longiceps, 49. — 

 latiscutata, 49. — convexa, 50. — subcris- 

 tata, 50.— platygnathus, 50. 



Chemical geology, (Johnston on) 282. 



Cheshire, (on the salt of) 150. 



Chromate of Iron in India. 167. 



Clay, in Boulders in the valley of the 

 Calder, 297. 



Coal fields of Pensylvania and Nova Scotia, 

 169. — Coal formation of Calabria, 166. 

 — Measures of Pensylvania, 25. — Man- 

 chester coal-field, 289. 



Contorted strata in the valley of the 

 Brent, 120. 



Cornwall, (earthquake in) 167. 



Croydon Railway, (earth slip on,) 111. 



Cumbrian rocks — propriety of appella- 

 tion, 129. 



D. 



Dawes, on vegetable remains in New Red 



Sandstone, 297. 

 Denton, on model mapping, 157. 

 Devonian system, (fossil fishes of) 257. 

 Devonian rocks in Russia, 33. 

 Destruction of Terceira by Earthquake, 



45. 



