Ice 



196 



durg. Glacial period, xxxiv. Proc. 76 ; 

 (coast-) originat. Hessle Clay, xxxv. 411- 

 412 ; (do.) insuff. to ace. for glaciation 

 of Shetland, xxxv. 807 ; gravels resultg. 

 fr. melting of, in E. Anglia, xxxvi. 500, 

 xxxviii. 670, 671; dir. of movern. on 

 Aberdeen coast, xxxviii. 160-177 w. map ; 

 do. in N. Ireland, xliv. 827-833 w. maps. 



Ice, rate of flow of, xliii. 398 et seqq. ; 

 agency of, traced at Selsey, xlviii. 350 ; 

 see also Glacial, Glaciation, Ice-sheet, 

 etc. 



Ice-cap, polar, & Glacial climate, xxxii. 

 400-406. 



Ice-dam, ancient, at mouth of Glen Spean, 

 xlviii. 12. 



Ice-fjords of N. Greenland, xxxiii. 142-176 

 figs. 



Ice-foot on Arctic coasts, xxxiv. 565. 



Ice-formation, underground orig. of, 1. 485. 



Ice-rafts, accumul. & transp. power of, 

 xxxviii. 233 et seqq. 



Ice-sheet in N. Lanes, Yorks, & West- 

 moreland, evid. for, xxviii. 471-491 & 

 pi. xxx. (map) ; i.-sh. period in N. part 

 of Lake District, xxix. 434; in Eden 

 Valley & W. part of Yorks Dale district, 

 xxxi. 55 ; in Yorks, movem. of, xxxiii. 

 114 et seqq.; in Orkney Is., dir. of, 

 xxxvi. 654 et seqq. ; chart showg. prob. 

 path in North Sea, xxxvi. pi. xxvii. ; 

 forest-growth coexist, with, xxxviii. 742 ; 

 in W. Highlands, xlviii. 5 ; lake formed 

 durg. decay of same, xlviii. 9. 



Icebergs, *in S. Hemisphere, ii. (Part 2) 

 69 ; boulders transp. by, iii. 183, iv. 97, 

 317-318, v. 19, 23, vi. p. lxii, vi. 67; 

 icebergs on Greenland coast, ix. 305, 

 xxvi. 679; action on sea-bottom, ix. 306; 

 format- of (as illustr. in N. Greenland), 

 xxxiii. 154 ; insuff. to ace. for glaciation 

 of Shetland, xxxv. 807 ; f ormg. Contorted 

 Drift on Norfolk coast, xxxvi. 472; in 

 conn. w. Moel Tryfaen deposits, xxxvii. 

 355, 356. 



Iceland, geysers of, iii. p. liv, iv. p. ci; 

 glaciers & moraines in, xxix. 208, 209 ; 

 Tert. basaltic format, of, xli. 93-101 

 figs. ; hollow spherulites in obsidian fr., 

 xli. 165, 166 & pi. iv. ; basic rocks reg. 

 as ident. w. Scottish & Irish Tert. do., 

 xlii. 53. 



Ichnites lithographicus, xxx. 14 fig. 



Ichnolites in coal-format, of Nova Scotia, 

 ii. 132. 



Ichthyerpetum Mbernicum, sp. nov., fr. 

 Kilkenny Coal Measures, xlvii. 343-347 

 figs. 



Ichthyodectes, gen. diff. fr. Portheus, 

 xxxiii. 520 ; do. fr. Daptinus, xxxiv. 

 439 et seqq. 



elegans, sp. nov., xxxiii. 521 & pi. xxii. 



minor, xxxiii. 520 & pi. xxii. 



Ichthyodorulites fr. nr. Ludlow, xiii. 288 

 & pi. x. 



Ichthyolites fr. N.S.W., xx. 1-5 & pi. i. 



Ichthyopterygia in relat. to Sauropterygia, 

 xxxix. Proc. 44 et seqq. 



Ichthyosauria, Ophthalmosaurus, new 



genus of, xxx. 696-707 & pis. xlv., xlvi. 

 Ichthyosaurus, skin of, ix. 79-81 & pi. v. ; 



contrasted w. Eosaurus, xix. 53 et seqq. ; 



teeth fr. Kimeridge Bay, xxviii. 34-35 



& pi. ii. ; tooth-root, etc. in, xxxv. 197 ; 



viviparous sp. of, xxxv. Proc. 104; comp. 



w. teleosauria & recent crocodilia, xxxvi. 



645; sp. in Gr. Oolite, xxxviii. Proc. 197 ; 



shoulder-girdle of, xxxix. Proc. 45 fig. ; 



interclavicle of, xxxix. Proc. 47; geogr. 



distrib., etc. of, xxxix. Proc. 50, 51 ; hind 



limb of, xxxix. Proc. 55, 56 fig. 

 crassimanus comp. w. I. zetlandicus, 



xxxvi. 646. 

 enthekiodon, sp. nov., xxvii. 440 & 



pi. xvii. 

 gaudensis, sp. nov., xxvii. 29 fig. ; 



xxxv. 527. 

 *trigonodon, xi. (Part 2) 41. 



Walkeri transf. to Cetarthrosaurus, 



xxix. 505. 



zetlandicus, sp. nov., skull of, xxxvi. 



635-647 & pi. xxv. 

 Ick, W., Foss. Dicotvl. Trees in Bottom 



Coal at Parkfield Colliery, i. 43-46 w. 



section. 



, Crustac. Remains in Carb. 



Rocks, i. 199. 



Icklingham (Suffolk), flint-implem. fr., 



xvii. 363. 

 Ida, Mt. (Troad), crystall. schists of, xxxix. 



627. 

 Idar (Oldenburg), section to Oberstein, iv. 



211 ; agate-quarries nr., iv. 212. 

 Iddingsite, different, fr. Potluck pseudo- 



morphs, 1. 617 et seqq. 

 Idmonea, remarks on, xl. 789. 



aldingensis, sp. nov., xl. 696. 



atlantica, xl. 683. 



bifrons, sp. nov., xl. 685 & pi. xxx. 



claviformis, sp.nov., xlv. 569 & pi. xix. 



commiscens, sp. nov., i. 524 fig. 



concava, xlviii. 156. 



contorta, xliii. 339. 



contortilis, sp. nov., i. 68 fig. 



PLochstetteriana, xl. 684 & pi. xxx. 



maxillaris, sp. nov., i. 523 fig. 



Milneana, xl. 684. 



radians, xl. 684. 



ramosa, xliii. 339. 



reticulata, xlviii. 156 & pi. iii. 



serpens, xliii. 339. 



stomatoporoides, sp. nov., xlv. 568 & 



pi. xix. 

 triquetra, xl. 790 ; var. Parkinsoni, 



nov., xlv. 569 &pl. xviii. ; var. Y-formis, 



nov., xlv. 568 & pi. xix. 



sp. (Eoc), i. 525 fig. 



Idocrase, fluid-cavs. in, xiv. 482 & pi. xix. ; 



occurr. & comp. of, xxxiii. 466; in 



altered Coniston Limest,, xlvii. 311 & 



pi. xii. ; in Shap rocks, xlix. 368. 

 Idwal, Llyn & Cwm (N. Wales), viii. 375, 



376. 

 If ton Heath (Shropshire), section to Chirk, 



xxxiii. pi. i.; Coal-Measures, etc. at, 



xxxiii. 10 et seqq., 25 & pi. i (vert, section) 



