Tro 



396 



Trochus ornatissimus, var. Pontonis, ix. 



343 & pi. xiv. 



pulchellus, sp. nov., xiv. 149 & pi. x. 



pulcherrimus at Speeton, xiv. 615. 



retrorsus, sp. nov., xxxi. 226. 



serrilimba, xxxvi. 585. 



— ■ — ■ solitarms, sp. nov., xxxi. 506, 507 fig. 

 Sutherlandii, sp. nov., xiv. 150 & 



pi. x. 



Thetis, xxvi. 403 & pi. xxvi. 



Tollotianus, xxxi. 292 & pi. xiv. 



Waltonii, sp. nov., xvii. 510 & pi. xvi. 



Troctolite of Lizard district, xlvii. 482. 

 Troctolite group of rocks, xli. Proc. 69. 

 Troger Bach (S. Tyrol), section, xlix. 35 ; 



rocks of, xlix. 71. 

 Trogontherium minus, sp. nov., xlvi. 447 



& pi. xviii. 

 Trona ( = tufac. deposit) of Saxby K., 



xxviii. 285. 

 Troplwn subnodosum, viii. 266 & pi. xvi. 

 Tropidonotus natrix fr. Ightham fissure, 



1. 190. 

 Tropifer Icevis, gen. & sp. nov., xiii. 360- 



363 figs., xiv. p. xci. 

 Tropitidae, enumer. of genera, xxxviii. 



Proc. 229. 

 Trotternish (Skye), section at, vii. 105. 

 Troutbeck (Cumberland) , faults nr., iv. 74 ; 



Tr. Valley, Stockdale Shales in, xliv. 685. 

 Trouville (Normandy), map of coast nr., 



xxxvii. 548. 

 Trowbridge (Wilts), sections at, vi. 312, 



xxxviii. 719 ; well-sinking at, xlii. 302. 

 Trowier Hill (Ayr), Girvan success, of, 



xxxviii. 578. 

 Trowlesworthite, a new rock, xl. Proc. 7. 

 Trowse (Norfolk), section at, xxiii. 88 ; do. 



across Yare Valley, xxxiii. 83 ; intraglac. 



erosion at, xxv. 259, 445-449 w. section ; 



disturb, of Chalk at, xxxv. Proc. 106, 



xxxviii. 234. 

 Truellii hemera, xlix. 483 et seqq. 

 Trukkee Eange (Baluchistan), ii. 262, 263. 

 Truncatulina falcata, 1. 721 & pi. xxxiv. 



Haidingeri, 1. 722. 



lobatul'a, 1. 721. 



mundula, xliv. 7. 



variabilis, 1. 721. 



Wtiellerstorji, 1. 722. 



Trunk-like concretions in Potsdam Sandst., 



xlvi. 609 fig. 

 Truro (Nova Scotia), section to Tatma- 



gouche, i. 27 ; do. to Stiewacke Valley, 



v. 130 ; New Red Sandst. nr., iv. 51. 

 Truxillo (Estremadura), section to Logro- 



san, i. 53. 

 Teton, G-., Format, of New Island 



(Aphroessa) nr. Kaimeni Is., xxii. 319, 



402. 

 Tsad, Lake (Equat. Africa), floods on, xlix. 



579. 

 Tschampigel Keller (Switzerland), hornbl. 



rock fr., xlix. 99. 

 TscnEKMAK, G.,*Greenst. & their Second- 

 ary Minerals, xvi. (Part 2) 20. 

 , *Chemico-mineral Researches — 



Felspar Group, xxi. (Part 2) 18-20. 



I Tscheemak, G., elected For. Corr., xxxi. 

 p. lxxxvi; elected For. Mem., xlii, 

 j Proc. 6. 



j Tsotu (Upper Indus basin), triple fan at, 

 xxix. 454 fig. 



Tubular concretions in strata of Bahamas, 

 ix. 211. 



Ttibulipora biduplicata, sp. -nov., xliii. 

 343 & pi. xviii. 



campicheana, xliii. 343 & pi. xviii. 



dimidiata, xliii. 343. 



incohstans, sp. nov., xliii. 633 & 



pi. xxv. 



Megcera, sp. nov., i. 69 fig. 



proboscidea (?), i. 522 fig. 



spatiosa, sp. nov., xiv. 567 & pi. xviii. 



sp. (Eoc), i. 523. 



Tubutella ambigua, gen. & sp. nov., 

 xxxvii. 71, 80. 



Tuck's Wood Farm (Noi'folk), section, 

 xxxiii. 86. 



Tuddenham (Suffolk), brickearth, etc. at, 

 xxxviii. 740. 



Tudor (Canada), eozoonal Laurent, at, 

 xxiii. 253, 254 ; Bozoon fr., xxiii. 257 & 

 pis. xi.-xii., xlvii. 348-355 figs. 



Tufa in Staggia & Elsa valleys, i. 287 ; in 

 Hala Range, iii. 344-345*; on Turko- 

 Persian frontier, xi. 301, 302, 310: in 

 Condeixa district, vi. 146 ; of Campagna 

 di Roma & its rate of format., vi. 289 ; 

 at Vichy, vii. 78 et seqq.; calcar., in I. of 

 W., x. 52 ; do. in I. of Portland, xxxi. 41 ; 

 nr.Tealby, xxiii. 244; vole, of Latacunga, 

 xxi. 249 ; crust in plain of Morocco, 

 xxviii. 88 & pi. iii. ; calcar., in Griqua- 

 land West, xxx. 583 et seqq., 6 1.5 et 

 seqq.; in S. Africa, 1. 564; nr. Saxby 

 R., xxviii. 284, 285 w. chem. anal.; 

 fossilif., of Gympie, xxviii. 294, 295 w. 

 chem. anal. ; microsc. struct, of, xxxv. 

 Proc. 73. 



Tufaceous limestone in Sto. Domingo, ix. 

 120, 123 et seqq. 



Tuffs at Ardtun Head, vii. 94, 98 ; in Eigg, 

 xxvii. 293 ; cones & craters of, xv. 522 et 

 seqq. ; tuffs of Auckland (N.Z.), xvi. 244 

 et seqq. ; trachytic, in Bolivia & Peru, 

 xvii. 12, 19, 23 et seqq. ; ^plant-remains 

 in, at Czekehaza, xxv. (Part 2) 5 ; por- 

 phyritic, of Atlas range, xxviii. 94. 



Tuffs different, fr. ashes, xxxi. 421 ; tuffs 

 w. plant-remains, etc., in Schemnitz 

 district, xxxii. 296, 297 ; porphyritic, of 

 Ayr coast, xxxiv. 780; felspathic, of 

 Lawrence Hill, xxxv. 647; do. of Wrekin, 

 xxxv. 649 : do. in Costa Rica, xxxviii. 

 329, 333, 339 ; altered, of Charnwood 

 Forest, xxxvi. 344, 345 ; do. nr. Linley 

 Hall, xxxviii. 122, 125 ; Lr. Cambr., of 

 St. David's, xxxix. 295 w. chem. anal. & 

 pi. ix. ; pre-Cambr., in Ramsey I., xl. 

 542, 552 ; vitreous, of Yellowstone dis- 

 trict, xxxvii. 396 fig. ; & clays, fossilif., 

 of Madeira, xxxviii. 279 ; of Japan, 

 elasticity & strength-constants of, 

 xxxix. 140; pumic, of Mte. Somma, xl. 

 49 et seqq. ; pisolitic, ibid., xl. 77, 85. 



