Vol. 57.] 



GENERAL INDEX. 



555 



Morlaix (Britanny), coi unaum occurrg. 



as contact-mineral near, 185-88 w. 



figs. 

 Morton, G-. H., obituary of, liv-lv. 

 Mountain Limestone, see Carboni- 

 ferous Limestone. 

 Mud-flows on Yorkshire coast, 295. 

 Muff, H. B., 363. 

 MuRCHisoN Geological Fund, list of 



awards, xxviii. 

 MuRCHisoN medallists, list of, xsvii. 

 Mdrciiison, Sir Roderick, quoted, 



2B8. 

 Muscovite replacing felspar, 32. 

 Museum of Greol. Soc, special general 



meeting, xcii-xciii. 

 Myalina, Oarbonif. spp. of, 384. 

 Mynydd-y-Gam (Anglesey), geol. of, 



20-30 w. map & sect. 

 Myoconcha psilonoti 0) , 234 & pi. ix. 



Naiadita lanceolata, 307-312 w. figs. 



& pi. xiii. 

 Naiadites, etc., isodietic line for, 382. 

 Natrolite (?) fr. Mt. Girnar, 45; in 



ophitic diabase of Malverns, 174. 

 Neqjurassic Series, 153. 

 !Nepheline in Mt. Girnar monchiquite, 



44. 

 Nepheline - syenite of Mt. Girnar, 



41, 42, 43. 

 Nevada Basin (U.S.A.), former exist. 



of great lakes in, 429-31. 

 Nevis (W. I.), see St. Christopher. 

 Newara Eliya (Ceylon), granulites 



betw. Hakgala and, 207-208. 

 Newcastle-under-Lynie Series, 2.54, 



255-56. 

 Newton, E. T., 83, 285 ; on Grapto- 



lites fr. E. Peru, vii ; on Mesozoic 



Fossils fr. Arran, 229-41 & pi. ix. 

 Newton, E. B., xcii, 354. 

 Newton Gill (Yorks), sect, descr. 



359-60. 

 Nidd Valley (Yorks), sect, descr., 



363. 

 North Esk River (Forfar), Silurian (?) 



& other rocks of, 328-36 w. figs. 

 Northants stratigraphy interpi-eted by 



means of Marlstone Rock-bed, 346. 

 Norwegian Geol. Surv. map presented, 



xcvii. 

 Notgrove (Grloucest.), sect, descr., 



139. 

 Notgrove Freestone, 126 et seqq. 

 Nottinghamshire, Upper Coal-Mea- 



sures in, 262-64. 

 Nxi/yula gibbosa., etc., isodietic line for, 



380. 

 sp. PLr. Lias], 234. 



Nuculana atienuata, etc., isodietic line 



for, 380. 

 (Leda) Tatei, sp. nov., 234 & 



pi. ix. 



sp. [cf. Leda Quenstedti], 235 



& pi. ix. 



Nugent, N., 490 et seqq. 



Nuneaton (Warwick), intrusive rocks 



contrasted w. those of Malvern 



Hills, 178-79. 



Obsequent valleys, 190. 



Obsidian Cliff (Yellowstone), hollow 



spherulites of, 212-15 w. figs. 

 CEhlert, D. p., vi. 

 Ohiya (Ceylon), garnetiferous rocks 



near, 208-209. 

 Old Red Conglomerate along E. Bor- 

 der of Highlands, 335, 339. 

 Old Red Sandstone in Arran, 226 ; 

 in Tortworth district, 267, 268 ; 

 (?) age of porphyrite-dykes in Loch 

 Awe district, 314. 

 Oldham, R. D.,on Origin of Dunmail 



Raise, 189-95. 

 Oligocene (?) of Antigua, 498 ; of 



Guadeloupe, 511. 

 Olivine-basalts in Malvern Hills, 168- 

 72 w. figs. & pi. vii (raicrosc. sects.). 

 Omai Creek (Brit. Guiana), rock- 



specims. from, Ixxxviii. 

 Oolite (Inferior), see Bajocian. 

 Oolitic ironstone in Anglesey, 26 ; do. 



in N. Cotteswolds, 132. 

 Opal-silica in Dufton-Pike rbyolite, 33. 

 Ophitic dolerite in Jasper & Green- 

 Rock Series, 333 ; oph. oli vine- 

 diabases in Malvern Hills, 172-75 

 & pi. vii (microsc. sect.). 

 Orhitoides in Antiguan ' marls,' 495, 



497, 498. 

 Ordovician roc^s of Mynydd-y-G^rn, 

 20 et seqq. ; Ordovic. age of igneous 

 intrusions among Cambrian beds of 

 Malvern Hills, 181 ; Upper Ordovic. 

 graptolites fr. E. Peru, vii. 

 Orpington (Kent), drift-worn paUto- 



lith from, xcviii. 

 Osgodby Nab (Yorks), 293. 295. 

 Ostrea irregularis (?), 233-34. 

 OttreUte in rocks of Bastogne dis- 

 trict, 57, 60 et seqq. 

 Ouse River (Hunts), Corallian S. of, 



75-79 ; do. N. of, 80-82. 

 Oxford Clay in St. Ives district, 76 et 

 seqq. 



Palaeolithic implemt. fr. Minster, i ; 



drift-worn do. fr. Orpington, xcviii. 

 Palaeoraeteorological explanation of 



gome geol. problems, 405-78 w. maps. 



