Orb 



282 



Orbicular diorite, orig. of struct., xli. 



Proc. 85. 

 Orbi&ny, A. d', *Foram. of Vienna Basin, 



iii. (Part 2) 69-71. 

 (& A. Gente), *Geologie appli- 



quee aux Arts & a 1' Agriculture, ix. 

 (Part 2) 34. 

 , Wollaston Fund Awards to, iii. 



p. xxi, v. p. xviii ; obituary of, xiv. 



p. lxxiii. 

 Orbis infimus, sp. nov., ii. 30 fig. 

 Orbitoides, microsc. struct, of, vi. 32-36 



& pis. iv.-viii. ; O. fr. Jamaica, xix. 514; 



in Tert. asphalt-bed of Trinidad, xxii. 



592. 

 Mantelli, iv. 11-13, vi. 32 et seqq. 



& pis. vi.-vii. ; in Maltese Mioc, xxxv. 



521. 



Prattii, vi. 33 et seqq. & pi. viii. 



Orbitolina-chert at Haldon, xxxviii. 83. 

 Orbitolite-btfds in Alps, v. 190, 192, 203 ; 



sandst. of Bavar. Alps, x. 352. 

 Orbitolites complanata, microsc. struct. 



of, vi. 30-31 & pis. vi.-vii. 

 Orca citoniensis fr. Red Crag, xliii. 15 & 



pi. ii. 

 Orcadian Flagstones, xxxvi. 649, 650. 

 Orchies (French Flanders), section descr., 



xi. 243. 

 Orchy, Glen (Argyll), rock-success, in, 



xvii. 216. 

 Ordovician rocks of N. Highlands in relat. 



to Torridon Sandst., xxxviii. 114-118; 



of Baltic provs. of Russia, xxxviii. 517 ; 



Ordov. time, phys. geogr. of Anglesey 



region in, xl. 582 ; system in Canada, 



comp. w. same in W. Europe, etc., xliv. 



807; radiol. chert of S. Uplands of 



Scotland, xlvi. Proc. Ill ; (?) age of 



same fr. Mullion I., xlix. 219 ; Ordov. 



r ocks, papers on, summarized, I. Proc. 78. 



g ee also Cambrian, Silurian, Arenig, Bala, 



a. other names of formations. 

 Ore-dep os its, ^affected by electrical action, 



iv. p. 



lxxviii. See also Metalliferous. 



Oregon (U.S.A.), Mioc. of, xi. 517 w. list 



of foss. 

 Orenburg (S.E. Russia), Cliorlrizodon fr., 



xxxvi. 540-543 fig. 

 Oreodaphne fastens, foss., xv. 55, 57. 

 Oreodon comp. w. Merycochcerus, xxxii. 



263 et seqq- . 



Oreodontidse, char, of family, xxxn. 261 ; 



genera inch in, xxxii. 262 ; list of spp. w. 



horizons, xxxii. 272. 

 Oreston (Devon), Rhinoceros lejotorhinus 



fr. xxvi. 457-468 figs. 

 Oret'i River (N.Z.), section to Takitimii 



Mts., xli. 203. . 

 Oreton (Shropshire), Carb. Limest. of, 



xviii. 94-102. 

 Orford (Suffolk), Crag Beds nr., v. 345- 



353 ; section to Thorpe-Aldborough, 



Kxii 21 ; do. at Broom Hill, xxvii. 122 ; 



foss! fr.' Corall. Crag nr., xxvii. 123, 



Organic *substances mingled w. vole, dust, 

 etc" iii. (Part 2) 10-15, iv. (Part 2) 19-23, 



xxv. (Part 2) 1 ; causing bleachg. & varieg. 

 of strata, v. 29-30, xxiv. 371 ; organic 

 life, progress, of, in geol. time, viii. 

 pp. lxxi et seqq. ; remains deposited in 

 Arctic seas, ix. 311; orig. of Laurent, 

 graphite, xxvi. 114 et seqq.; do. ofpiso- 

 litic iron ore, xxvi. 164, 165; do. of phos- 

 phatic nodules in Cambs Cret. affirmed, 

 xxix. 55 et seqq., 69. 



Organisms, foss., grouping of, xv. 278. 



Orighstad Valley (Transvaal), gold reefs 

 of, xli. 584 ; alluv. gold of, xli. 587. 



Origin of minerals & rocks illustr. by mi- 

 crosc. struct, of crystals, xiv. 453-500 & 

 pis. xvi.-xix. ; *of rocks, Delesse on, xvi. 

 (Part 2) 1-11 ; of lake-basins, etc., see 

 tmder Lake-basins, etc. 



'Origin of Species,' *Darwin's, xvii. 

 p. xxxix. 



Orinoco River (Venezuela), map showg. 

 course fr. Barrancas to Ciudad Bolivar, 

 xxxv. pi. xxxiii. 



Oriskany Sandstone (Lr. Devon.), etc., iv. 

 153 ; in N. Y. State, xiv. 372, 437. 



Orissa (Bengal), plant-bearg. series in, xxxi. 

 521. 



Orkney Is., *dust fallen in, iii. p. 1 & 

 (Part 2) 10-15 ; plant-remains in O. R 

 S. of, xiv. 76 ; success, of strata in, xv. 

 348, 350, 353-421* & pi. xii (map); 

 glaciat. of, xxxvi. 648-663 & pis. xxvi.- 

 xxvii (maps). 



Ormerod, G., obituary of, xxx. p. xxxv. 



Ormerod, G. W., Saltfield of Cheshire, iv. 

 262-288 w. sections & pi. ix (map). 



, Perm, at Astley, vii. 268-271 w. 



chem. anal. 



, Pseudomorph. Cryst. of Sodium 



Chloride, ix. 187-188. 



, Rock-basins in Granite of Dart. 



moor District [abs.], xv. 16-29; Earth- 

 quake along N. Edge of Dartmoor Gra- 

 nite, _ Sept. 28th, 1858, xv. 188-191 ; 

 Granite-veins in Carbonac. Rocks N". & 

 E. of Dartmoor [abs.], xv. 191-193. 



, Geol. of Upper Part of Teign 



Valley, xxiii. 185, 418-429 w. map & 

 sections. 



, ' Waterstones ' of Keuper & 



Pseudomorph. Cryst. of Sodium Chlo- 

 ride in Somerset & Devon, xxiv. 546, 

 xxv. 50-51 ; Results arisg. fr. Bedding, 

 Joints & Spheroidal Struct, of Granite 

 on E. Side of Dartmoor, xxv. 273-279 

 figs. 



, Murchisonite - Beds of Exe 



Estuary, & Attempt to Classify Trias 

 thereby, xxxi. 346-353 w. sections. 



, Old Sea-beaches at Teignmouth, 



xlii. 98-100. 



, obituary of, xlvii. Proc. 61. 



Ormesby, N. (Yorks), vert, section facg. 

 xliv. 782. 



Ormo (Norway), section to Malmo, xiv. 38. 



Ormsby, S. (Lines), section to Fulletb}', 

 xxiii. 247. 



Ornain River (France), map of countr} r 

 betw. Meuse and, xxxvii. 514. 



