778 



GENERAL INDEX. 



[Nov. 1900, 



Ty'n-y-graig (Rhayader), sect, to AUt 

 Goch, 92 ; sect. fr. near, across 

 Caban Cock to the Abernant, 104. 



Tyrite, see Fergusonite. 



Unconformity at base of Coal Mea- 

 sures of Wallgrove Hill, 175 ; do. 

 elsewhere in Malvern & Abberley 

 districts, 176 ; do. in other districts, 

 176-79 ; apparent, due to distort, 

 by pressure, in Porth Wen Bay, 

 235 & fig. ; unconform. of Llan- 

 badrig Series to Green Series in N. 

 Anglesey, 243 ; betw. Upper Llan- 

 dovery & Llandeilo in Builth 

 district, 373 ; betw. Woolhope 

 Limest. & Old Radnor Series, 512. 



Underground geology, general advance 

 in, lxix-lxxi ; do. in S.E. England, 

 lxxi-lxxxvii. 



United States of America, progress in 

 geological science in, lxix. 



Upper Heldre (Long Mt.), sect, to 

 Heldre Hill, 442. 



U radii Limestone (Turonian), 43. 



Uranium, occurr. of, 527. 



Uriconian of Malvern Hills, 140 et 

 seqq. ; of Longmynds, 296. 



Dsambara (E. Africa), stratigraphy 

 of, 226 et seqq. 



Valentian of Rhayader, 137, 413. 



Yaynor Farm (Rhayader), Silur. 

 sequence of, 90-91 ; sect, to beyond 

 Cwin Barn, 88. 



Vents (& sills), basic, of Waterford 

 coast, 671-74 w. figs. 



Victoria (Australia), calcisponges fr. 

 Eocene of, 50-66 & pis. iii-v. 



Volcanic rocks, Carb., of I. of Man, 

 effects of earth-movement on, 11- 

 25 & sects. ; altered vole, rocks of 

 Gilgit, 350 ; vole, bomb fr. Rotorua, 

 507-508. See also Felsitic rocks, 

 Tuffs, etc. 



Waihi (N.Z.), erupt, rocks from, 

 493-95, 498-501 & pi. xxvii. 



Waitekauri (N.Z.), erupt, rocks from, 

 496-97. 



Walcot Quarry (Long Mt.), Upper 

 Silur. of, 394-96. 



Wales (Central), Ordovic. & Silur. 

 complex of, 68-71 ; (N.), river- 

 system of, 230-32; (N.), not a 

 source of Midland pebble- beds, 296. 



Wallhouse Wood (Abberley Hills), 

 sects, through S. portion of, & to 

 Barrel Hill Farm, 166. 



Wallsgrove Hill (Abberley Hills), 



geol. struct, of, 165 et seqq. ; O. R. S. 

 & Coal Measures W. of, 173-75 & 

 sect. ; sects., 1 72, 173, 174. 

 Walton-on-the-Naze (Essex), cliff-sect. 

 at, descr. & fig., 711-13 w. lists of 

 foss. 

 Waltonian (Crag) of Essex & its relat. 

 to that of Suffolk & Norfolk, 705- 

 38 w. maps, sects., & lists of foss., 

 743-44. 

 Warren, S. H., see Hopwas. 

 ' Warren House Rocks ' (= Uriconian) 



of Malvern Hills, 139, 140. 

 Waterfall Cove (Waterford), sect, on 

 E. side of, 659 ; vole, rocks of, 660, 

 665, 675. 

 Waterford County (Ireland), igneous 

 rocks of coast of, 657-93 w. figs. & 

 chem. anal. 

 Wateriiouse, G-., quoted, 131. 

 Watkins, A. O., on Format, of 



Dendrites [title only], vi. 

 Watts, W. W., exhib. specims. of 

 native gold, pseudomorph. after 

 wood, xcii; quoted, 131, 255, 276, 

 277, 412, 486; on- microscop. 

 struct, of Anglesey rocks, 250, 252, 

 253. 

 Wealden Beds, their thickness & 

 extent in London Basin, etc., lxxx- 

 lxxxi. 

 Welch, R., quoted, 576, 577. 

 Well-section at Zool. Gardens, v. 

 Welsh Borderland, zonal classif. of 

 Wenlock Shales of, 370-412 w. figs, 

 & pi. xxiv (graptol.). 

 Wenlock Limestone & Shales in 

 Malvern Hills, 142, 147, 148 et 

 seqq. ; in Abberley Hills, 155, 159 

 et seqq., 170 et seqq. ; W. L. of 

 Shropshire, Lagena in, 262; Cicero- 

 crimes fr. W. L., 267-71 w. figs. & 

 pi. xvi ; W. S. of Welsh Border- 

 land, zonal classif. of, 370-412 w. 

 figs. & pi. xxiv (graptol.) ; W. Beds 

 contrasted with Lr. Ludlow, 421 ; 

 new spp. of Balmania from W. S., 

 616-18 w. fig. & pis. xxxiv-xxxv. 

 Wern Fawr (Builth district), sect, to 



Trecoed, 382. 

 West Malvern, sects, nr. St. Edward's 

 Orphanage, descr. & fig., 150 et 

 seqq. ; sect, in quarry nr. Lamb Inn, 

 descr. & fig., 152-53; well-sect. 

 descr. & fig., 157-58. 

 West Wickham (Kent), Drift-gravels 



at, 8-10. 

 Western Australia, Geol. Surv. maps 



presented, lxxxix. 

 Weybournian division of Crag, 708, 

 724, 738. 



