Tur 



398 



Turritella cintrana, sp. nov., vi. 194 & 



pi. xx. 



Howsei, sp. nov., xxiii. 556 & pi. xiv. 



Meaclii, sp. nov., xi. 458 & pi. xii. 



mutabilis (?), sp. nov., iii. 421 & pi. xx. 



multistriata, xxvii. 64. 



prcelonga, sp. nov., xvi. 177 & pi. viii. 



Penauxiana, xi. 458. 



rosea, vi. 331 & pi. xxviii. 



Pubidgeana, sp. nov., xxiii. 152 & 



pi. viii. 

 simplex, sp. nov., xx. 59. 



(?) sulcifera, xliii. 630 & pi. xxiv. 



tornata, sp. nov.,xxii. 580 & pi. xxvi. 



unicarinata, xxi. 37 & pi. iii. 



sp. (Sutton Stone), xxii. 89. 



Turtle Mt. (Canada) descr., xxxi. 613. 



Tuscaloosa (Alabama) coal, ii. 279, 280; 

 chern. anal, of, iii. 270. 



Tuscan Archipelago, rocks of, xlix. 144. 



Tuscany, geol. of parts of, i. 273-297 & 

 pi. ix (map), *iii. (Part 2) 1-10; vents 

 of hot vapour in, vi. 367-384 ; lines of 

 former & pres. disturb, in, vi. 378 ; 

 *Cocchi on Tert. of, xiii. p. cxiii ; Mioc. 

 of, xvi. 480-486 ; specims. of Loxodon 

 fr., xxi. 281. See also Bamboli, Catini, 

 Val d'Arno, Sc other place-names. 



Tweed Valley (Scotland), Silur. of, iv. 

 195-209. 



Twelvetrees, W. H., Cliorhizodon oren- 

 burgensis, gen. & sp. nov. fr. Upper 

 Perm. Cuprif. Sandst. of Kargalinsk, 

 xxxvi. 540-543 fig. 



, Organic Remains fr. Upper 



Perm, of Kargalinsk, xxxviii. 490-501 

 w. sections & pis. xx.-xxi (foss.). 



Twickenham (Middlesex), Pleistoc. deposits 

 at, 1. 453-462 w. map, sections, & lists 

 of foss. 



Twinning, lamellar, in felspars, etc., its 

 orig. discussed, xli. 363 et seqq., xliii. 

 Proc. 73. 



Twisden, J. F., Displacem. of Earth's 

 Axis of Fig. prod, by Elev. & Depress, 

 of Surface, xxxiv. 35-45. 



Twisleton Scar (Yorks), section to Ingle- 

 ton, viii. 44. 



Twt Hill (Caernarvon), metamorph. series 

 betw. Porth Dinorwig and, xxxv. 321- 

 326 ; sections at & nr., xxxv. 683, 685, 

 xliv. 273 ; ground-plan of, xliv. 274 ; 

 intrus. rock & Arenig conglom. at, xliv. 

 275. 



Twt Hill Beds, xxxv. 682. 



Twyford (Middlesex), well-section at, x. 

 95 & pi. i. 



Ty Cerrig (Denbigh), driftless area, xxxviii. 

 192. 



Ty Croes (Anglesey), granitoid rock of, 

 xxxv. 302, 307 ; ' schist ' of, xxxv. 303, 

 307 ; section to Bodorgan descr., xxxvii. 

 217, 233 ; do. to Tan y Bryn, xl. 193. 



Ty Fry (Glamorgan), section showg. 

 shattering & contort, of strata by ice & 

 intrus. of Boulder Clay, xxxix. 48. 



Ty Gwyn (Caernarvon), section betw. 

 Yscubonven and, xxxv. 691. 



T3- Gwyn (Pembroke), section fr. vallej' St 



of, to cliff X. of St. David's Head, xxxi. 



pi. viii. 

 Ty Hen (Anglesey), section to Archaean W\ 



of Treiorwerth descr., xl. 574. 

 Ty Isaf (Denbigh), xlix. 431, 437 w. section. 

 Ty Mawr (Caernarvon), granitoid rock of, 



xxxv. 300, 306. 

 Ty Newydd (Anglesey), chem. anal, of 



serpentine fr., xxxvii. 46. 

 Ty Wyn (Anglesey), section to Llanfaelog, 



fig. & descr., xl. 573 ; do. at, fig. & descr., 



xl. 577; petrogr. of rocks fr., xl. 583, 



584 et seqq. 

 Ty y Cyw (Glamorgan), section to Coed y 



Gores, xxxv. 477. 

 Tyddyngwladis Slates, ' Primordial ' foss. 



in, xxii. 505. 

 Tyldesley (Lanes), section to Burley Dam, 



iv. 286. 

 Ttxoe, A., Productive Iron Ore in Eoc. of 



Hants, vi. 133-134. 

 , Changes of Sea-level effected by 



Exist. Phys. Causes durg. Stated Periods 



of Time [abs.], ix. 47-49. 

 ■ , Footpr. of Iguanodon, found at 



Hastings, xviii. 247-253 figs. 

 , Time-Interval betw. Format, of 



Upper & Lr. Valley-gravels of Part of 



England & France; & Char, of Holes 



Bored in Rocks by Mollusca, xxii. 463- 



468 w. sections. 

 , Amiens Gravel, xxiv. 1, 103-125 



figs. & pis. iii.-iv (map & sections). 

 , Quatern. Gravels of Engl, 



& Wales, xxiv. 455, xxv. 57-100 figs. & 



pis. iv.-ix (maps & sections) ; Format. 



of Deltas, & Evid. & Cause of Gr. 



Changes in Sea-level durg. Glacial Period 



[abs.], xxv. 7-11. 

 , [Apparatus for Determg. Heat 



evolved by Frict. of Ice upon Ice], xxxi, 



p. lxxxiii. 

 , Denud. Agencies & Geol. De-> 



posit, under Flow of Ice & Water, etc. 



[abs.], xxxii. Proc. 4-7. 



, obituary of, xli. Proc. 42. 



Tylostoma, gen. nov., v. 376-380 & pi. ix. 



globosum, sp. nov., v. 379 & pi. ix. 



ovatum, sp. nov., v. 379 & pi. ix. 



punctatum, sp. nov., v. 378 & pi. ix. 



Torrtibice, sp. nov., v. 378 & pi. ix. 



Tympanic bones of whale fr. Felixstowe, i». 



37-40 ; fr. Holy wells, ii. 32 ; four types 



of, in foss. Balamidse, xliii. 9, 10 & pi. ii. 

 Tympanophora racemosa, xx. 79 & pi. xi. 



simplex, xx. 79 & pi. xi. 



Tyn y Groes (Merioneth), uralite-porphyry 



fr., xxxiii. 427^29 w. chem. anal. & 



pi. xix (microsc. sections). 

 Tynat, Burn of (Banff), O. R. S. fish-beds 



at, xv. 346 & pi. xi. 

 Tyndall, J., obituary of, 1. Proc. 41. 

 Tyndrum (Perth), lead-ores, etc. at, xvi. 



425; section to Dalmally descr., xvii. 



217 ; do. to Black Mt., xvii. 218 ; do. to 



Loch Tay, xvii. 218 ; gneiss, etc. nr., xix. 



200. 



