Inv 



200 



Invertebrata, their value in classif. of I 



strata, xxxvi. 380. 

 Inverugie (Elgin), list of foss. fr. Lr. Lias 



of, xxix. 153. 

 Inzersdorf strata, *their distrib. in Aus- 

 trian Empire, xvi. (Part 2) 21-30. 

 Iocrinus, anal system in, xxxviii. 306 fig., 



307. 

 Ionian Is., see Lixouri. 

 Ipswich (Suffolk), tympanic bone of 

 Balcena found nr., ii. 32 ; section in 

 Lr. Eoc. nr., vi. 272 ; Red Crag mam- 

 malia fr. nr., xii. 225 et seqq. ; section 

 on railway nr., xlvi. 127. 

 Irazu volcano (Costa Rica), xxxviii. 334, 



335 fig. & pi. xii. 

 Ireland (N.), Silur. of, comp. w. that of 

 S.E. Scotland, vi. 56-58; pegmatite of 

 Mourne Mts., x. 397 ; geol. of, x. p. xlvii ; 

 experim. researches on granites of, xii. 

 p. lx, 171-202, xiv. p. cxlv, 300-305, xx. 

 116, xxiv. p. lxxiv; Coal Measures of, 

 their relat. to O. R. S., xiii. p. cxx ; (N.), 

 Rhaetic in, xvi. 388; Perm. foss. of, xvii. 

 322; Geol. Surv. of, xvii. p. xxxvi ; (S.), 

 mode of format, of river- valleys in, xviii. 

 378-403 & pis. xix.-xx (map & sections) ; 

 Upper Devon, of, xix. 487 ; generalized 

 section, xix. 479 ; (N.), distrib. of Lias 

 in, xx. 110. 

 Ireland (N.E.), correl. of Cret. of, xxi. 

 15-44 & pis. iii.-v., w. lists & descr. 

 of foss.; (S.), Carb. slate & O. R. S. 

 of, xxii. 320-371 figs.; (N.E.), Lr. Lias 



of, xxiii. 297-305, 306; graptolites & 



all. foss. in, xxv. 158-162 ; post-Glacial 



mammals in, xxv. 207 ; (N.E.), iron ores 



assoc. w. basalts of, xxvi. 151-165 figs. ; 



Lias in, xxvi. 324, xxxviii. Proc. 160,161 ; 



(S.W.), deep mining for copper in, xxvi. 



348; glaciation of, xxix. 198-225 ; (N.), 



volc.orig.of rocks constit. great plateaux, 



xxx. 224 ; subaerial orig. of same, xxx. 225. 

 Ireland, Carb. districts of, xxxiii. 616; 



gen. sections descr., xxxiii. 622 et seqq. ; 



do. con-el. w. Carb. of Gt. Britain & 



Europe, xxxiii. 646, 647; (S.W.), Upper 



Silur. of, xxxv. 715 et seqq. ; do. correl. 



w. that of Severn & Wye district, xxxv. 



718 ; plan showg. relat. of Glengariff 



Series, O. R. S. & Carb. in, xxxv. 713 ; 



(S.), geol. relat. of rocks to those of N. 



Devon, etc., xxxvi. 255-276 w. comp. 



sections ; prehistoric mammalia of, xxxvi. 



400; (N.j, u. R. S. of, xxxvi. 529-535 ; 



(S.),Devono-Silur.in, xxxviii. 205; (N.), 



do. xxxviii. 206. 

 Ireland (N.E.), Tertiary gabbros, dolerites, 



& basalts of, xlii. 49-97 & pis. iv.-vii. ; 



Carb. ostracoda in, xlii. 505; (N.), dir. 



of ice-flow in, xliv. 827-833 w. maps ; 



Llandeilo, Bala, & Upper Silur. vole. 



rocks in, xlvii. Proc. 150. 

 Ireleth (Lanes), boring nr., xxv. 426. 

 Ireleth Slates in Lake District, i. 446-448, 



viii. 141 ; & Limestones, ii. 113-117 & 



sections ; equiv. in Ravenstonedale, viii. 



42. 



' Irestones ' or ' blue el vans ' of Camborne 



district, xxxii. 173 et seqq. 

 Irish Cove (Cape Breton), section in 



Laurent. (?) descr., xlii. 517. 

 Irish Sea, tide in, causes of, xxxii. Proc. 

 6; tides comp. w. those in English 

 Channel, xxxiii. 29 ; horizont. & vert, 

 range of two Boulder Clays in basin 

 of, xxxiii. 737; exist, of true till ibid., 

 xxxiii. 738; posit, of boulders relatively 

 to matrix of drift-deposits, xxxv. 450 ; 

 ice in, xlix. Proc. 86. 

 Iron, metallic, in gabbros & peridotites of 



Western Is. of Scotland, xii. 374. 

 Iron, native, *in Cret. of Bohemia, xiv. 

 (Part 2) 22 ; do. fr. Ovifak, xxviii. 1-3, 44 

 -46 w. chem. anal., *(Part 2) 5-7 ; as a 

 colouring agent in strata, xv. 493, xxiii. 

 114, xxiv. 351-400 figs. & pis. xi.-xv., 

 xxvii. 190, 241, xxxv. 505 ; iron in 

 Northampton Sands, origin of, xxvi. 

 375-376. 

 Iron amianthus, xl. Proc. 65. 

 Iron bisulphide, varieg. due to decomp. 



of, xxiv. 378. 

 Iron carbonate, etc., in conn. w. Bagshot 



fossils, iii. 396-397. 

 Iron Crag (Cumberland), chem. anal, of 



lava fr., xxxi. 408, 598. 

 Iron galls in mud-bed above Rhymiiey 



Grit, xxxv. 505 w. chem. anal. 

 Iron Mt. (Brit. Columbia), glaciat. of, 



xxxvii. 272 ; terraces on, xxxvii. 274. 

 Iron ores, in Western States, ii. 436, 438, 

 439; of Dannemora & Bisberg, iii. 15. 

 16; of Nova Scotia, vi. 355 et seqq.; 

 pisolitic, nr. Tremadoc, iii. 140, 147 ; 

 do. nr. Atherfield, iii. 302 ; *do. of Basel, 

 viii. (Part 2) 23; sectarian, at Hengist- 

 bury Head, vi. 133 : in Weald of Sussex, 

 vii. 351 ; in Deccan, viii. 231 ; in Panjab, 

 ix. 199. 

 Iron ores in Nagpur district, xi. 380 ; *of 

 Hiittenberg, xii. (Part 2) 2 ; of Cleve- 

 land, chem. anal., xii. 357 ; *of Jaslo 

 district, xiii. (Part 2) 24; *of Stvria. xiii. 

 (Part 2) 32 ; of Exmoor, xv. 105-109 

 w. chem. anal. ; nr. Malaga, xv. 590 ; of 

 Britain, & their orig., xv. p. xii; in 

 Perthshire, xvi. 422 et seqq. ; in Wad- 

 hurst Clay, xvii. 275, 282 ; in Ashdown 

 Sand, xvii. 277. 

 Iron ores, Pennsylvanian, lignite in, xxii. 

 p. xcii ; at W. Challacombe, xxiii. 602 ; 

 brown, of Prinkipo I., xxiv. 54 ; of Nasi), 

 xxv. 27, 28 ; in S. China, xxv. 126 et seqq. ; 

 in Brendon Hills, pecul. of veins of, 

 xxv. 255-256 figs.; in Hastings Co. 

 (Canada), xxv. 269; assoc. w. basalts 

 of N.E. Ireland, xxvi. 151-165 figs., 

 xii. 85 ; in Carb. Limest.. assoc. w. 

 Dolom. Conglom., xxvi. 183 et seqq. ; 

 Neocom., of Lines, xxiii. 245, xxvi. 329; 

 in Banff, xxvii. 103 ; pisolitic, inter- 

 bedded w. basalts of Western Is. & X. 

 Ireland, xxx. 229. 

 Iron ores of Haytor Mine, xxxi. 628, 629 ; 

 in Japan, xxxiv. 552, 553 w. chem anal. ; 



