GENERAL INDEX TO VOLUME CXI

Abersychan (S. Wales), Main Limestone Basement Series (Carb.), Lowther valley- at, 313, fig. Ravenstonedale, 33-42, figs. Aberystwyth-Towyn area (Wales), BASSETT, D. A., the Silurian rocks of the gravity anomalies of, 384-6. Talerddig district, Montgomeryshire, Acodus, 124. 239-63, figs., pl. xiii, 264. similaris sp. nov., 124-5, pl. x. Benbulben Shale, Sligo sync]ine, 169 A crocladium cordifolium, 233. fig., 171 fig., 175. stramineum, 233. Berrocian Glaciation, 192, 194, 196, 206. Afon-Lwyd valley (S. Wales), Main Birk Beck (Westmorland), Carb. Base- Limestone in, 311-13, figs., 316 sects. ment Series in, 33, 34, 35 map, 36-41, Africa, pediplanation & isostasy in, fig. , 353-9, figs., pl. xviii, 361-74, figs. BISHOP, A. C. (& A. K. WELLS), on an ' African" land-surface in S. Africa, 354, appinitic facies assoc, w. certain 355 et sqq. ; in W. Africa, 362-5, figs., granites in Jersey, C.I., 143-63, figs. 366, et sqq. BLACK, W. W., discusses Joysey's paper, Aldwarke (Yorks.), disturbed strata at, 222-3. 274. BLACKWELDER, E., discusses papers by Alien's pit, Dorchester, geol. of, 226-7, King (L. C.) & Pugh, 370. sect. ; fauna fr., 227-8 ; plant remains Blaisdon Beds, May Hill, 86, 92, 104, 105 ft., 228-36, figs. ; flint implements fr., fig., 106 fig., 107; fossil list, 110-12. 236-7, fig. Blaisdon fault, May Hill, 99 et sqq. Ambolodu~, 118 et sqq. Blastoids, Carb., distribution in Craven triangularis, 122-3, pl. vii. area, 209-24, figs., pl. xii. Amorphognathus, 118 et sqq. BLtmD~.~, C. R. K., discusses George's duftonus sp. nov., 123-4, pl. ix. paper, 319. ordovicicus, 123, pl. ix. BLYT~, F. G. H., discusses Cook & Amphibole in Jersey appinites, 146-54, Thirlaway's paper, 69. figs., 155 et sqq. Bouguer anomalies, calculation of, 378; ANDERSON, E. M., discusses Elwell's see also Gravity anomalies. paper, 81-2. Boulder-bed in Dalradian of Mayo, 71- A~DERSO~, J. G. C., discusses Wells & 84 figs., pl. v. Bishop's paper, 164. Boulders, deformed, in Briska boulder- Anomalies, gravity & magnetic, in Wales, bed, 75-6, pl. v ; petrography of, 77-8, 375-97. fig. Anglesey & Malverns, Bouguer anomalies Bowland area, Carb. blastoids in, 218- & geol. sect. betw., 389, 390 fig., 391. 19. Aphelognathus, 119 et sqq., 127-8, fig. Boyn Terrace, correl, with Clacton chan- clegantus sp. nov., 128, pl. viii. nels, 297-9. Appinites, Jersey, 143-66, figs. Briska (Mayo), boulder-bed at, 72-4, figs. A~BER, M. A., discusses Powell's paper, BRow~, E. H., discusses papers by King 395-6. (L. C.) & Pugh, 371-2. Ardmore (Co. Waterford), minor struc- Bryum sp., 233. tares nr, 1-21 ; A.-Youghal syncline, BVLL~.~WELL, W., discusses Cook & map of, pl. ii. Thirlaway's paper, 68-9 ; discusses Armeria maritima, 228-9, fig. papers by King (L. C.) & Pugh, 371; Artifacts, use in dating deposits, 204-5. discusses Powell's paper, 395. Aston Common. See Swallow Nest. Bundoran Shale, Sligo syncline, 169 fig., Avonian, Wales, 339-41. 171 fig., 172-3. BADE~-POWELL, D. F. W., on marine Cambrian, Wales, 325-6. fauna of Clacton channels, 301-4 ; dis- Cambridge area, Pleistocene deposits of, cusses Warren's paper, 306. 200-1. Bagthorpe (Notts.), disturbed strata at, Campylium sp. (cL polygamum), 233. 274. C~eEW~LL, J. G., 21; the post-Silarian, Bala & Malvern, gravity gradient betw., pre-marine Carb. sedimentary rocks of 389. the eastern side of the English Lake Ballyshannon Limestone, Sligo syncline, District, 23-44, figs., 45-6. 168-72, figs. Carboniferous, Sligo area, 167-86, figs., Bangor (Mayo), map of area S.E. of, pl. xi ; of Wales, 339-46 ; post-Carb. 73. earth-movements, 346-8, pls. xv & 399 400 GENERAL INDEX [vol. cxi,

xvi; Carb. (& Devonian) of Water- Dalradian, Mayo, boulder-bed in, 71-84. ford, minor structures in, 1-21 ; Carb. Dartry Limestone, Sligo syncline, 169 blastoids, distribution in Craven area, fig., 171 fig., 176-7. 209-24, figs., pl. xii. DAWSOn--GRovE, G. E., analysis of minor Carboniferous Limestone, density of, structures nr Ardmore, Co. Waterford, 49; Main Limestone, S. Wales, 309- 1-21, figs., pls. i & ii. 22, figs. Dean, Forest of, gravity anomalies in, Carex cf. acuta, 229. 58, 59, 60 map. cf. pendula, 229-30. Deformation, in Ardmore area, 18-19; spp., 230. principles of, 19-20. Carfan-Tafolog valley (Montgomery- Denbighshire Grit & Shale Group, shire), vert. sects, in, 252 fig. Talerddig, 240, 249, 251,253. CASE, H., 238; on the flint implements Devonian (& Carb.) of Waterford, minor fr. the Summertown-Radley Terrace structures in, 1-21. at Dorchester (Oxon.), 236-7, fig. Diorites, assoc, w. appinites, Jersey, Catuvellaunian Glaciation, 193, 194, 206. 144-5, fig. Cerastium cf. arvense, 229 fig., 230. Disturbed strata on Fox Earth Coal, CKEES~_~, R. L., discusses Wells & 265-82, figs., pl. xiv. Bishop's paper, 164. DIXEY, F., discusses papers by King Church Stretton disturbance, gravity (L. C.) & Pugh, 369-70. anomalies across, 58, 59 fig. Dolgau Mudstone Group, Talerddig, 240, Clacton (Essex) channel deposits, 283- 245, 247-9, fig., 249, 250 fig. 307, figs. DOLLAR, A. T. J., discusses Shirley's CLUE, A., 238; (& K. S. SA/~DFORD) On paper, 279-80. the geol. of Allen's pit, Dorchester Dolomitization, Graig quarries, 312. (Oxon.), 226-7, fig. Dolwen pericline (Wales), gravity Cleavage, Ardmore area, 4-5, figs., 9; anomalies of, 386, fig., 387. Talerddig, 254 fig., 258-60, fig. ; (Carb.) Dorchester (Oxon.), plant &c. remains ft. of Wales, 343-4. Summertown-Radley Terrace at, 225- Clifford's Mesne Beds, May Hill, 86, 97-8, 38, figs. 106 fig. ; fossil list, 110-2. Downtonian, May Hill, 86, 97-8, 107, Clitheroe (Lancs.), Carb. blastoids at, 109 ; fossil list, 110-12. 218. Draba incana, 230, 231 fig. " Clod," above Fox Earth Coal, 267, 271, Drag- (& shear-) zones, Ardmore area, 5, fig., 280. 14-17, maps, 18, 19. Clwyd, Vale of (N. Wales), gravity Drepanocladus capillifolius, 234. anomalies over, 381, 382-4, figs. revolver,s, 234. Coal Measures, densities of, 49, 55; aendtner/, 234. thickness in Worcester basin, 54-7. Drepanodu~, 118 et sqq., 125. Coal seams, dopth of burial, 344-5. altipes, 125-6, pl. x. Concretions, calcareous, fr. Clacton chan- -- arcuatus, 126, pl. x. neis, 300-1. -- similaris, 126, pl. x. Congo land-surface in S. Africa, 355 et Drift. See Holderness Drift & Newer 8qq. Drift. Conglomerates, E. Lake District, 24-44. Dugoed, Afon (Montgomeryshire), 240, Conodonts, Keisley Limestone, 117-42, 241, 245, 247 et sqq. ; sects, in Silurian figs., pls. vii-x. in, 242, 243, 244 fig. ; outcrop map of, COOK, A. H. (& H. I. S. THmLAWAY), on 246 fig. the geol. results of measurements of DuIoA_~, S. L. (& OTHERS), plant remains gravity in the Welsh Borders, 47-64, fr. the gravels of the Summertown- figs., pls. iii & iv, 69-70; discusses Radley Terrace nr Dorchester (Oxon.), Powell's paper, 394-5. 225-38, figs. Cordylodus, 119 et sqq., 134. elongatus, 135, pl. vii. EARP, J. R., discusses Lawson's paper, Cornovian Glaciation, 194. 115. Cratoneuron filicinum, 234. Earthquake tremors, cause of disturbed Craven area (Yorks.), Carb. blastoids in, strata at Swallow Nest, 277-8. 209-24, figs., pl. xii. East Anglia, glacial succession in, 197- Creep of strata, not cause of disturbance 200. at Swallow Nest, 276. East Crop, S. Wales Coalfield, Main Cretaceous, Wales, 349-50. Limestone of, 309-22, figs. CROFT, W. N., on calcareous concretions East Pennine Coalfield, disturbed strata (rhizocretions) fr. Middle Pleistocene in, 265-82. deposits of the Clacton channels, 300-1. EASTWOOD, T., discusses Shirley's paper, Cwm Ynyscoy (nr Pontypool), sect. in 280-1. Main Limestone at, 314, 316 fig. EDWARDS, W., discusses Shirley's paper, Cymrian Glaciation, 194. 279. part 4] GENERAL INDEX 401

ELLIS, S. E., discusses Wells & Bishop's Graig quarries (S. Wales), Main Lime- paper, 165. stone in, 311-12, 313, fig., 316 fig. ELWSLL, R. W. D., the lithology & Grassington (Yorks.), blastoids in Yore- structure of a boulder-bed in the dale Series of, 209-24, figs., pl. xii. Dalradian of Mayo, Ireland, 71-81, Gravity (& magnetic) anomalies in N. figs., pl. v, 83, 84. Wales, 375-97, figs., pl. xix; gr. England, review of Pleistocene epoch in, measurements in Welsh Borders, 47- 187-208. 64, figs., pls. iii & iv. Erosion, contemporaneous, not cause of GRIFFITHS, D. H. (& R. F. Kr~o), note disturbed strata at Swallow Nest, 276. on the magnetic anomalies over the Erosional & depositional cycles in S. Lleyn peninsula, 392-3, fig. ; replies to Africa,... 353-6, figs., table, 357, 358, pl. discussion on Powell's paper, 397. XVIII. GROVES, A. W., discusses Powell's paper, Erratic rocks of Clacton channel & 394. Holland Gravel, 296-7. Estuarine beds, Clacton channel, 284 et HARLAND, W. B., 21. sqq., figs. Harleeh dome (Wales), gravity anomalies EvANs, P., discusses papers by King over, 385 map, 386-9, figs. (L. C.) & Pugh, 370-1. HAWKINS, H. L., discusses Joysey's EYr.ES, V. A., discusses Shirley's paper, paper, 222. 280. HAYWARD, J. F., 142 ; discusses Warren's paper, 305. Faulting, Ardmore area, 6-7, 18-19; at HENSON, F. A., discusses Wells & May Hill, 99-101 ; at Talerddig, 260-1. Bishop's paper, 164. Festuca ovina ssp. ovina, 232, 233 fig. HrLL, M. N., discusses Powell's l~per,

-- ssp. tenuifolia, 232, 233 fig. 393-4. ~. rubra, 232, 233 fig. HODSO~, F. R., discusses George's paper, spp., 232, 233 fig. 319. FIakebridge (Westmorland), 34; map of Holderness Drift, 202, 203, 204. country to Shap, 35; thickness of Holland Gravel, erratics of, 296-7. Basement Series betw. Shap &, 39 fig. HOLLI~GWORT~I, S. E., discusses Cape- Flaxley (May Hill), sects, in Ludlovian ~ell's paper, 45; discusses Cook & at, 93. Thirlaway's paper, 67-8 ; discusses Flaxley Beds, May Hill, 87, 91-2, 103-4, Shirley's paper, 280; discusses papers 105 fig., 106 fig., 107 ; fossil list, 1 I0-12. by King (L. C.) & Pugh, 371. Flint-Point of Air (N. Wales), gravity Hollybush (Worcs.), Malvern structure anomalies over, 382, figs. at, 50-2, fig., 55. Folding, Ardmore area, 3-4, 18-19 ; at Hucknall No. 1 Colliery (Notts.), dis- May Hill, 98-9; at Talerddig, 254 fig., turbed strata at, 274-5. 255-8, figs. ; L & thrusting not causes HuDson, R. G. S., discusses Oswald's of disturbed strata at Swallow Nest, paper, 183-4 ; discusses Joysey's 275. paper, 221-2. Fox Earth Coal, disturbed strata over- Huntley Hill Beds, May Hill, 87-8. lying, 265-82, figs. Huntley Quarry Beds, May Hill, 87. Freshwater beds, Clacton channel, 284 et sqq., figs. Iaen R. (Montgomeryshire), 240, 241, 245, 247, 249. Gelli Shale Group, Talerddig, 240, 241. Icriodella, 119 et sqq. GEORCE, T. N., in discussion of Oswald's sp., 124, pls. viii & ix. paper, 184-6 ; discusses Bassett's Implements, flint, fr. Summertown- paper," 263-4; on the Carb. Main Radley Terrace at Dorchester (Oxen.), Limestone of the East Crop in South 236-7, figs. Wales, 309-18, figs., 320-2. Incompetent beds, yielding of, not cause Gn,L, W. D., discusses Dawson-Grove's of disturbed strata at Swallow Nest, paper, 21. 275-6. Glacial conditions & base of Pleistocene, Isopachyte maps of Carb. Main Lime- 188-9, 19I-2. stone of S. Wales Coalfield, 317 ; of Lr. Glasshouse fault, May Hill, 99, 100. Palaeozoic of Wales, 325 et sqq., pl. xvii. Glenade Beds, Sligo syncline, 169 fig., Isostasy, pediplanation &, in S. & W. 171 fig., 179-80. Africa, 353-9, figs., pl. xviii, 361-74, Glencar Limestone, Sligo syncline, 169 figs. fig., 171 fig., 175-6. GODWIN, H., discusses Duigan's paper, Jersey (C.I.), appinites of, 143-66, figs. 238. Jointing, Ardmoro area, 5-6, 9-12, map; Gondwana & post-Gondwana land-sur- at Talerddig, 254 fig., 261. faces in S. Africa, 354, fig., 355 et sqq. ; JoNEs, F., discusses Lawson's paper, in W. Africa, 362-5, figs., 366 et sqq. 113-14. 402 GENERAL INDEX [VOI. cxi,

Jo~Es, O. T., discusses Cook & Thirl- Magnetic (& gravity) anomalies in N. away's paper, 64-5 ; discusses Rhodes's Wales, 375-97, figs., pl. xix. paper, 141; discusses Bassett's paper, Main Limestone (Carb.), S. Wales, 309- 263; discusses Shirley's paper, 281; 22, figs. discusses George's paper, 320; on the Ma]ham (Yorks.), blastoids in Yoredales geol. evolution of Wales & the adjacent at, 217-8. areas, 323-51, pls. xv-xvii; discusses Malvern & Bala, gravity gradient betw., Powell's paper, 394. 389. JoYs~.Y, K. A., on the geol. distribution Malvern gneiss, density of, 49. of Carb. blastoids in the Craven area, Malverns, gravity measurements across, based on a study of their occurrence in 49-52, figs. ; contacts along line of, the Yoredale Series of Grassington, 57 ; anomaly profile & geol. sect. betw. Yorkshire, 209-21, figs., pl. xii, 223-4. Anglesey &, 389, 390 fig., 391. Jurassic, Wales, 348-9. Manvers Main Colliery (nr Barnsley), disturbed strata at, 274. Keisley Limestone, conodonts of, 117--42, Marls, red (Downtonian), May Hill, 86, figs., pls. vii-x. 98. Kcislognathu~ gen. nov., 118 et sqq., 130, M~RSTO~, A. T., discusses Warren's fig. paper, 306. gracilis sp. nov., 131, pl. vii. May Hill inlier, geol. of, 85-116, figs., pl. KEn'T, P. E., discusses Cook & Thirl- vi. away's paper, 65-6. Mayo (Ireland), boulder-bed in Dal- KING, B. C. (& N. RAST), discusses radian of, 71- 84. Elwell's paper, 83-4. Mell Fell Conglomerate, 24-8, map, 29- KI~(L L. C., pediplanation & isostasy : 33. an example fr. S. Africa, 353-9, figs., Mell Fells-UIlswater area (Lake Dis- pl. xviii, 372-3. trict), Mell Fell Conglomerate in, 24- Kn~a, R. F. (& D. H. GRFFI S), note 33, figs. on the magnetic anomalies over the Menai region, gravity gradients in, 389, Lleyn peninsula, 392-3, fig. 391. Kn~a, W. B. R., 238; discusses Cape- M icrocoelodus, 119 et sqq., 133. well's paper, 44; discusses Rhodes's ? sp., 133, pl. x. paper, 14()-1 ; on the Pleistocene epoch Middle Limestone, Grassington, blas- in England, 187-208; discusses War- toids in, 209-24, figs., pl. xii. ren's paper, 305. Midlands, glacial deposits of, 192-4, Kington-Radnor (Hereford), gravity 196. anomalies over, 58, 59 map. Mnium sp. (cf. rug/bum), 234. Knightwick (Worcs.), Malvern structure Mollusca, non-marine, fr. Clacton chan- at, 50-2, fig., 55. nels, 290-6; marine, fr. same chan- nels, 301-4. Lake District, Carb. basement beds E. of, Monckton Colliery (Barusley), disturbed 23-46, figs. strata at, 273-4. Lake Harrison, 193. Montgomeryshire. See Talerddig. Landscape evolution, S. Africa, 353-6, MOORE, L. R., discusses George's paper, figs., pl. xviii. 319-20. LAwsoN, J., the geol. of the May Hill Mullaghmore Sandstone, Sligo syneline, inlier, 85-113, figs., pl. vi, 115-16. 169 fig., 171 fig., 173-5. Irigonodina, 119 et aqq., 134. Mullions, fr. quartzite near Briska, 78-9, cL elongata, 134, pl. viii. pl. v. sp., 134, pl. vii. MYERs, J. O. (& I. J. WATSON), discusses Limestone. See Carboniferous Lime- Powell's paper, 396-7. stone. Llandoverian, May Hill, 87-8, 101-2; of Wales, 328-9. Namurian, Grassington, Middle Lime- Lleyn peninsula (N. Wales), magnetic stone &, 215-17, sect. ; N. overstep, S. anomalies over, 392-3, fig. Wales, 315, 317-18, fig. Longhope (May Hill), Ludlovian at, 94-5, New House fault, May Hill, 99. map. New Red Sandstone, May Hill, 86, 98; Longhope Beds, May Hill, 86, 92-3, N.R.S. erosion, Wales, 346-8. 104-6, fig., 106 fig., 107; fossil list, Newent (Glos.), Malvern structure at, 110-12. 52-4, figs., pl. iii. Longmyndian, densities of, 49. Newer Drift, North of England, 202-4, Lowther Valley (Westmorland), Carb. 206, 207. Basement Series in, 33, 34, 36. Nidderdale (Yorks.), bla~toids in Middle Ludlovian, May Hill, 86-7, 91-7, figs., Limestone at, 217. 102-7, figs. ; fossil list, 110-12 ; L. of Nigeria, erosional & depositional land- Wales, 330. surfaces in, 362-5, figs. part 4] GENERAL rND~X 403

North of England, problems of Newer PUGH, W. J., discusses Lawson's paper Drift in, 202-4. 114-15. OAK~EY, K. P., discusses Warren's paper, Quartzite alternation w. boulder-bed, 306-7. Mayo, 73-4, fig. Oistodus, 126. Old Red Sandstone, density of, 49; RAMSBOTTOM, W. H. C., discusses O.R.S. of Wales, 332-8; post-Lower Joysey's paper, 222. O.R.S. movements, 338-9; gravity Ranunculus cf. hyperboreus, 229 fig., anomalies in, O.R.S. area of Welsh 230-1. Borders, 59-62, figs. cf. lingua, 231. Orbitremites derbiensis, 214 et sqq., pl. xii. , batrachian sp., 231. Ordovician, Wales, 326-8. RAST, N. (& B. C. Kr~G), discusses OSWALD, D. H., on the Carb. rocks betw. Elwell's paper, 83-4. the Ox Mtns & Donegal Bay, 167-83, Ravenstonedale (Westmorland), basal figs., pl. xi. Carb. rocks nr, 41-2. OWE~, T. R., discusses George's paper, Red Crag as base of Pleistocene, 190, 319. 191, 197, 205. Ox Mrs. (Eire), Carb. north of, 167-86, Reef limestones, Sligo syncline, 169 fig., figs., pl. xi. 171 fig., 177-9. Oxford area, glacial gravels of, 194, 196, REYNOLDS, D., discusses Wells & 197. Bishop's paper, 165-6. Rhinoceros, food remains in molar of, Palaeoliths. See Implements. 289-90. Palaeozoic, Wales, 324-48, pl. xvii Rhipidognathus, 120, 122. (isopachyte maps). Rhizoeretions fr. Clacton channels, Paltodus, 119 et sqq., 127. 300-1. acoatatus, 127, pl. x. RHODES, F. H. T., the conodont fauna of cfi unicostatus, 127, pl. x. the Keisley Limestone, 117-40, figs., Pediplanation, isostasy &, in S. Africa, pls. vii-x, 142. 353-9, figs., pl. xviii; in W. Africa, Rhyl-Ruthin (N. Wales), gravity profile 361-9, figs. & geol. sect. of, 383, fig. Pembrokeshire, sect. across, to show Risca (S. Wales), Main Limestone at, 313 post-Carb, folding, 346-7, p]. xv. fig., 314-15, 316 sect. PENCE & BROCKNER, Alpine nomen- Rock densities, measurements of, 48-9, clature of, 189, 191, 196. 55, 61,379-81,382. Philonotis cadres, 234. Roeklands (May Hill), Ludlovian at, 95- Phosphatized Pebble-bed, May Hill, 86, 7, map. 97. Rome, Plioceno-Pleistoeene boundary in Phragmodus, 119 et sqq., 136. neighbourhood of, 189-90, 191,205. insculptus, 136-7, pl. x. Rosagnathus gen. nov., 118 et sqq., 128-9, Pinskey Gill Beds, 34, 38, 41 ct sqq. fig., 138. Plant remains ft. the Summertown- superbus sp. nov., 129-30, pl. vii. Radley Terrace at Dorchester (Oxen), Roundya, 119, 137. 228-36, figs. diminuta sp. nov., 137, pls. viii & ix. Pleistocene epoch in England, 187-208 ; Rumex sp., 232. P. deposits at Clacton, 283-307, figs. Ruthin-Rhyl (N. Wales), gravity profile PococK, R. W., discusses Lawson's & geol. sect. of, 383, fig. paper, 114. Pohlia sp., 234. SANDFORD, K. S., 238; (& A. CLARK) Point of Air-Flint (N. Wales), gravity on the geol. of Alien's pit, Dorchester, anomalies over, 382, fig. 226-7, fig. ; on the fauna ft. same, Polygonum aviculare, 230. 227-8. sp., 230. Schoenoplectus lacustrls, 232. Pontypool (S. Wales), Main Limestone S. Shap (Westmorland), 33, 34, 36; geoI. of, 314. map of country to Flakebridge, 35; Potamogeton densus, 229 fig., 230. thickness of Basement Series betw. filiformis, 229 fig., 230. Flakebridge &, 39 fig. . spp., 230. Shear- (& drag-) zones, Ardmore area, 5, PowEI~, W. D., on gravity & magnetic 14-17, maps, 18, 19. anomalies in N. Wales, 375-92, figs., SHIRLEY, J., the disturbed strata on the pl. xix. Fox Earth Goal & its equivalents in Prioniodu~, 119 et sqq., 135-6, fig., 138. the E. Pennine Coalfield, 265-79, figs., gracilis sp. nov., 136, pl. viii. pl. xiv., 281-2. PUOH, J. C., isostatic readjustment in the SHOTTON, F. W., discusses Capewell's theory of pediplanation, 361-9, figs., paper, 44-5 ; discusses Shirley's paper, 373-4. 279. 404 GENERAL INDEX [vol. cxi, part, 4

Silurian, May Hill, 85-116 ; of Talerddig, TumoR, J. S., discusses Capewell's 239-64, figs., pl. xiii; of Wales, paper, 45; discusses Oswald's paper, 328-31 ; densities of S. rocks in Welsh 184. Borders, 49. SIMPSON, I. M., discusses Oswald's paper, Ullswater-Mell Fells area (Lake District), 184. Mell Fell Conglomerate in, 24-33, figs. Slickermiding, Ardmore area, 17. Unconformity, mid-Avonian, Wales, 340. Sligo area (Eire), Carb. of, 167-86, figs., Usk inlier, gravity & geol. sects, across, pl. xi. 60 map, 61 sect. Sligo syncline, succession in Carb. of, 168-81, sects.; structure of, 181, Varteg Hill (S. Wales}, Main Limestone 183 ; sects, across, 182 fig. at, 312-13, fig., 316 sect. Slumping, not cause of disturbed strata Veins, Ardmore area, 12-14, map. at Swallow Nest, 276. Victoria Falls land-surface in S. Africa, SOLOMON, J. D., discusses Warren's 355 et sqq. paper, 305. South Wales Coalfield, Main Limestone Wales, geol. evolution of, 323-51, pls. xv- of East Crop, 30.9-22, figs. xvii ; (N.), gravity & magnetic SP~.NCF~R, H. E. P., discusses Warren's anomalies in, 375-97, figs., pl. xix; paper, 305-6. see also South Wales Coalfield. ef. Ste//ar/a sp., 232. W~LMSLEY, V. G., discusses Lawson's Strachanognathus gen. nov., 118 et sqq. paper, 115. 131-2, fig. Waltonimu. See Red Crag. parvus sp. nov., 132-3, pl. viii. WARREN, S. H., on the Clacton (Essex) STRAW, S. H., discusses Lawson's paper, channel deposits, 283-305, figs., 307. 114. 'Washouts,' not cause of disturbed STtrS~FIELD, C. J., discusses Rhodes's strata at Swallow Nest, 276. paper, 141-2. Waterford, Co. (Eire). See Ardmore. Snmmertown-Radley Terrace, Dor- WATSON, I. J. (& J. O. MYERS), discusses chester (Oxen.), plant &c. remains fr., Powell's paper, 396-7. 225-38, figs. WELLS, A. K. (& A. C. BISHOP), Oil an SUTTON, J., discusses ElweU's paper, 82. appinitic facies assoc, w. certain Swallow Nest & Aston Common (Shef- granites in Jersey, C.I., 143-63, figs., field), disturbed strata at, 265-73, 166. figs., pl. xiii, 275-8. WELLS, M. K., discusses Wells & Bishop's paper, 163-4. Tafolog--Carfan valley (Montgomery- Welsh Borders, gravity measurements in, shire), vert. sects, in, 252 fig. 47-64, figs., pls. iii & iv. Talerddig Grit & Shale Group, 240, 242- Wenlock Limestone, May Hill, 87, 89-90. 5, sects. Wenlock Shale, May Hill, 87, 89. Talerddig (Montgomeryshire), Silurian Wenlockian, Woolhope & May Hill, 49, of, 239-64, figs., pl. xiii. 87, 88-90, 102; W. of Wales, 329- TAYLOR, J. H., discusses Elwell's paper, 30 82-3. West Cliff (Clacton) channel, 285-6, fig. T~.ALE, E., discusses papers by King WHITTE~, E. H. T., discusses Wells & (L. C.) & Pugh, 369. Bishop's paper, 165. TEMPLE, J. T., discusses Rhodes's paper, WILSON, G., discusses Bassett's paper, 142. 263. Tertiary, Wales, 350. Wood Green (May Hill), Ludlovian at, Tetraprioniodus, 138. 93-4, map. Thalictrura flavum, 232. ~rOOLDRIDGE, S. W., discusses papers by Thames Basin, glacial deposits of, 194-7. King (L. C.) & Pugh, 370. TH1RLAWAY, H. I. S. (& A. H. Coox), on Woolhope dome, gravity & geol. sects. the geol. results of measurements of across, 61 fig. gravity in the Welsh Borders, 47-64, Woolhope Limestone, May Hill, 87, 88-9. figs., pls. iii & iv. Worcester basin, rocks & structure of, T~.r.~.~, C. E., 142; disc~ Elwell's 54-8. paper, 83. Towyn-Aberystwyth area (Wales), gra- Yarnbury (Yorks.), knolls in Middle vity anomalies of, 384-6. Limestone at, 213, pl. xii. Trias, thickness in Worcester basin, 54-7 ; Yartleton Beds (Llandoverian), May Hill, Wales, 348; densities of T. marls & 87, 88. sandstones, 49, 55. Yoredale Series, Grassington, Carb. Trichonodella s.l., 120 et sqq. blastoids in, 209-24. TROTTER, F. M., discusses Cook & Thirl- away's paper, 66-7. Zygognathus, 120, 122.