Vol. 67.] 



GENERAL INDEX. 



753 



Three-Arch Bridge (Shepton Mallet), 



sect, in ry.-cuttg. descr., 59— (>0. 

 Thrust-phenomena in Perm, of N. 



Durham, 313 et segq. 

 Tiddeman, JR. H., Murchison Medal 



awarded to, xlii-xliii. 

 Time-planes, geological, lxviii et seqq. 

 Toad Vein (Bristol coalfield), 319 



et seqq. 

 Tokra fault-scarp (Benghazi), 593, 



601, 614. 

 Tor-gro (Gower), pitted pseudo- 

 breccia at, 499 & pi. xxxviii ; un- 



dolomitized pseudobreccia at, 507 



et seqq. & pi. xxxviii. 

 Tortonian - Helvetian mollusca of 



Cyrenaica, 625-28 & pi. x\ni;'see 



also Kainozoic. 

 Tournaisian of Burrington Combe. 



348-52; faunal notes on do., 363- 



68. 

 Trachycardium cf. granconense, 646- 



47. 

 Trachytes, soda-, of Skomer, 190-93, 



figs. & chem. anals. 

 Trawscoed Bough (Montgomery), 



Ordovic. of, 427 ; list of foss. from 



do., 429. 

 Treacher, LI., [exhibits palseolitbs], 



iv. 

 Trechmann, C. T., 315. 

 Trefgarn (Pembroke), vole, series of, 



182. 

 Trelydan (Montgomery), Ordovic. of. 



423 et seqq. ; Wenlock Shales of, 



436. 

 Trias (British), origin of, ii ; con- 



siderats. bearing on do., 238 et 



seqq. ; Trias in relat. to Permian 



of Notts, 75-117 figs. & pi. v 



(map) ; see also Bunter, Keuper. 

 Trilobites fr. Paradoxides Beds of 



Comley, 282-300, 306-309, 310-11 



& pis. xxiii-xxvi ; see also Agnostus, 



&c. 

 Trilobite-Dingle Group (= Glenkiln- 



Hartfell Group), in K.E. Mont- 

 gomeryshire, 419 et seqq., 422-24 



w. list of foss. 

 Trinidad (B.W.I.), Kainozoic, &c. of, 



696-98 fig. 

 Trinucleus intermedins, sp. nov., 449- 



50 & pi. xxx vi. 

 Trotter, J., 577. 

 Trust-funds, statement of, xxxviii- 



xxxix. 

 Tuffs (rhyolitic) of Skomer, 185. 

 Tunisia, Kainozoic sequence cp. w. 



that of Cyrenaica, 601-603. 

 Turonian in Egypt, 119 et seqq. 

 Tutcher, J. W., 173. 



Twine Hill (Somerset), Lr. Lias, &e. 



of, 61. 

 Tyn-y-llwyn (Montgomery), Wenlock 



Shales of, 437. 

 Tyning Batch (Radstock), foss. found 



on spoil-heap at, 322 et segq. 



Uiilig, V. K., decease announced, ei. 



Uitenhage Series, westernmost ex- 

 posure of marine facies, 721. 



Um-Esh range (Egypt), 239, 251, &c. ; 

 gully in, pi. xiii. 



Um-Hamaiet sub-type of Egyptian 

 Cretaceous, 130. 



Urn Shersher (Egypt), 129. 



Umzigga, Wadi (Cyrenaica), 582 ; 

 foraminifera, &c. in rocks from, 

 655. 



Unconformity, betw. Cretac. & Eoc. 

 in N. Egypt, 145 ; betw. Middle & 

 Lr. Cambrian of Comley, 298-99. 



Uniformitarianism, use of principles 

 of, lxiii et seqq. 



Uphill-Sheptou-Mallet area (Somer- 

 set), Rhastic, &c. of, 55-61. 



Uplift, epeirogenic & orogenic con- 

 trasted, lxvi. 



Upper Limestone Shales (D 2 -D 3 ) of 

 Gower, 489, 491-94. 



Valentian of N.E. Montgomeryshire, 

 419 et seqq. 



Vallis Vale (Somerset), yect. descr., 

 64. 



Vasum cf. frequens, 641 & pi. xlvi, 



Vaugiian, A. (& S. H. Reynolds), 

 Faunal & Lithological Sequence in 

 the Carboniferous Limestone Series 

 (Avonian) of Burrington Combe 

 (Somerset), 342-92 figs. & pis. 

 xxviii-xxxi ; (& E. E. L. Dixon), 

 the Carboniferous Succession in 

 Gower (Glamorganshire), with 

 Notes on its Fauna & Conditions 

 of Deposition, 477-567 figs. & pis. 

 xxxviii-xli. 



Vein-dolomites, different, fr. ' con- 

 temporaneous dolomites,' 481. 



Venezuela (S. Am.), physiogr. hist, of 

 portions of, 695-96, 700. 



Vindobonian, see Helvetian-Tor- 

 tonian, 



Visean of Burrington Combe, 344- 

 48 ; faunal notes on do., 368-71. 



Vobster area (Somerset), Lr Coal- 

 Measures of, 321-22. 



Vogt, B , [receives Wollaston Medal 

 for W. C. Brogger], xlii. 



Volcanic series of Skomer, 175-214, 

 figs. & pi. xi (geol. map) ; vole. 



