INDEX TO VOLUME XXVII

Acanthinula aculeata, 27; lamellata, Barnsley, 60-84; Coal, 58-80; Rock, 27. 62, 64, isopachytes, 69. Accounts, 1946, 126; 1947, 228; Beamshaws Coal, 76. 1948, 308. Beckton, 287. Accrington, 33. Beeston Coal, 73. Acklam, 236. Bempton, 186. Ackworth Rock, 59. Better Bed Coal, 73. Aislaby bore, 180, 195, 204; dome, Beverley, 235. 187. Beyrichocerotoides, 107, 111; trun• Alethopteris, 83; decurrens, 83. cates, 110. Alford, 177. Beyrichoceras castletonense, 106, 107, Alveolites, 106. 123; delicatum, 107, 108, 122; Anhydrite rocks, petrology, 221; micronotum, 107; phillipsi, 107, containing gypsum, 224; relation 108; submicronotum, 106; vesiculi- with dolomite, 220, with halite, ferum, 107, 122. 222. Bibliography, Yorkshire Geology, Anodonta, 26. 1944-1946, with additions to Anthracomya, 84. those of 1939-1943, 36; 1947-1948, Anthraconaia, 82,84,96, 274; adamsi, 298. 97; salteri, 96. Billingham, 205-224. Anthracosia, 82-95; acutella, 85; Bingley, non-marine lamellilbranchs aquilina, 85-89; atra, 84-96; bar• of Millstone Grit, 270. ken, 96; concinna, 85; fulva, 85-92; Black Bed Coal, 73. lateralis, 85-88; nilida, 85; phry- Black Mine Ironstone, 79. giana, 85; planitumida, 85; retro- Blocking Coal, 74-78. tracta, 85; similis, 95. Bobbing, 287. Anthracosphaerium, 82-96; affine, 94, Bolton-le-Sands anticline, 288. 277; gibbosum, 94; propinquum, 93, Bos, 28; longifrons, 23. 95, 277; truemani sp. nov., 93-95. Bothrodendron minutifolium, 83. Anticline, Askern, 59-72; Bolton-le- Brandesburton, 244. Sands, 288; Caistor, 175; Cleve• Bridlington, 235. land, 175, 180, 291; Conder River, Brigg, 179. 288; Don Fault, 59-79, 291; Esk- Brinkhill, 179. dale, 291; Heysham, 288; Lough- Broughton-in-Furness, 285. Willoughby, 174-182; Market Bullcroft, 75. Weighton, 174-187, 291; Melton Burdale, 177. Mowbray, 179; Middleton Tyas, Burton Agnes, 239. 180, 203, 289; Norton-Ridgeway, BURY, C. R. on the chemistry of 59-67; Rossendale, 286; Rother- saline deposits, 205. ham-Kiveton-Manton, 59-72; Buxtonia scarbricula, 102. Towy, 285; Wharfe, 181. Aphlebia, 83. Cadeby, 70. Arianta arbustorum, 27. Caistor, 179; anticline, 175. Avion, 27. Catamites, 83; suckoivi, 83. Asterophyllites equisetiformis, 83. Caninia, 106. Aulina furcata, 110. Carbonicula acutella, 84; affinis, 92; aquilina, 84-87; aquilinoides, 84; Balance sheet, 1946, 127; 1947, 230; atra, 84; concinna, 84; deansi sp. 1948, 310. nov. 275; exigua, 84, 92; fulva, 84; Bargate, 119. fusca, 92; gibbosa, 92; lateralis, 84; BARKER, W. R. (and D. Leitch), on lenicurvata, 274; nitida, 84; phry- fossil plants and non-marine lamel- giana, 84; planitumida, 84; pro- libranchs from the Newhill Mine, pinqua, 93; retrotracta, 84; similis, Wath-on-Dearne, 82. 94; turgida, 92; venusta, 277. 312 PROC. YORKS. GEOL. SOC. XXVII

Cardium edule, 27. Coleoptera, 28. Carrock Fell, 285. Columella edentula, 27. CARRUTHERS, R. G. on the secret of Conder River, anticline, 288. the Glacial Drifts, 43, 129. Conisborough, field meeting report, Carychium minimum, 26. 303. Castleford, 75. Coral zones, Castleton district, cor• Castleton, Derbyshire, Lower Car• relation with goniatite zones, 112. boniferous of district, 99; Lime• Cordaites principalis, 83. stone, 105. Cottingham, 239. Catterick, 203. Cow Law, 106-123. Cave Dale, 99-122; lava, 102-120. Coxwold-Gilling trough, 181. Cepaea nemoralis, 27. Craven Fault, 180, 285. Cerebos Salt Co., bores, 218, 220, Cross Newton Quarry, 220. 224. Cross Fell Inlier, 285. Cervus capyeolus, 28; elaphas, 28. Crossness, 287. Chalk, 175-187. Culford, 288. Charnian, 282. Current structures, Sorby's work on, Chee Tor Beds, 102, 117, 120. 7. Chevet Rock, 69. Chilham, 287. Chonetes, relation to Gigantclla, 266; Dalton Rock, 70. papilionacea, 248. Darlington Fault, 170-203. Church Stretton fault, 284. Davidsonina septosa, 101, 103, 107, Clausilia rugosa, 27. 114. Claxby, 179. Daviesiella, relation to Gigantella, Clay Cross marine band, 60. 266. Cleavage, slaty, Sorby's work on, 2. DEAN, V., on an unrecorded over• Cleveland, 174-189; bore, 195-226; flow channel in N.E. Lancashire, dyke, 187-189; anticline, 291. 33. Cliffe, 287. Deer, red, 23, 28, 31. Clowne Coal, 88, 96. Denaby, 74. Coal, Barnsiey, 58-80; Beamshaws, Denshaw, field meeting report, 303. 76; Beeston, 73; Better Bed, 73; Derbyshire Piper Coal, 78. Black Bed, 73; Blocking, 74, 77, Derwent, River, 189. 78; Clowne, 88, 89, 96; Derbyshire Dibunophyllum, 102; bourtonense, Piper, 78; Fenton, 79; First Brown 103, 114. Metal, 77; Flockton, 60, 79; Green Dimorphoceras gilbertsoni, 107. Lane, 78; Haigh Moor, 75; Halifax, Dirt Low, 115; Rake, 103. 73; High Hazels, 76; Meltonfield, Dodworth, 78, 79. 76; 82, Middle Eleven Yards, 77, Dolomite rocks, petrology, 218; with 78; Middleton Little, 77, 78; anhydrite, relations, 220. Middleton Main, 77; New Hards, Doncaster, 65, 75, 79. 77, 78; Old Hards, 75, 78; Park- Don Faults, 59-74; Anticline, 59, 63, gate, 72-79; Second Brown Metal, 291. 75, 77; Shafton, 59, 63, 69; Shef• Don Gorge, field meeting report, 303. field Ganister, 60; Silkstone, 74-79; Driffield, 238. Silkstone Four Foot, 78; Stanley Drift sequences, 45. Main, 76; Swallow Wood, 76; Duckmanton, 88, 96. Swilley, 78; Swinton Pottery, 59; Duddon Estuary, 285. Third Brown Metal, 77; Thorn- DUNHAM, K. C, on a contribution cliffe, 78; Three Bed, 74; Top to the petrology of the Permian Hard, 66; Wakefield Muck, 76; evaporite deposits of N.E. Eng• Warren House, 66; Wathwood, land, 217. 82-97; Wheatley Lime, 77, 78; Dunswell, 239. Whinmoor, 61. Durham, submerged forest beds on Coaley Lane, Wath-on-Dearne, 83. coast, 23; South, field meeting Coal Measures, Yorkshire, varia• report, 305; Southeast, Permian tions in, 58. sequence, 199. Cochlicopa lubrica, 27. Dykes, Neptunean, 113. INDEX VOL. XXVII 313

EAGAK, R. M. C, on non-marine Goniodiocus rotundatus, 27. lamellibranchs from the Millstone Goole, 232. Grit of Bingley, 270. Goosehill Hall, 106, 112, 119. Eakring, 286. Green Lane Coal, 78. Earle's Quarry, Castlcton, 105, 111, Grimsby, 179. 114. Gypsum in anhydrite, 224. Edale Shales, 99, 119, 120, 122. Eden Valley, 285. Hadfield's Quarry, Nun Low, 110. Elk, Irish, 23. Haigh Moor Coal, 75; Rock, 62, Emley, 77. isopachytes, 67. Equisetum, 28. Halifax, 73. Esk River, 187, 189. Halite, relation with dolomite, 222. Eskdale Anticline, 291. Harlech Dome, 285. Evaporites, symposium, 192; pet• Hartlepool, 23. rology of Permian deposits in N.E. Harwich, 288. England, 217; conditions of de• Harworth breccia, 182. position, 223; introduced minerals, Hatfield, 67. 225. Hawes, field meeting report, 304. Hayton bore, 220, 222, 224. Fairydale, 177. Helix nemoralis, 25. Far Cotes, 105, 115, 122. Hemsworth, 65, 80. Faults, Church Stretton, 284; Craven Hesieden Dene, Durham, 29. 180,285; Darlington, 175-203; Don, Heslerton syncline, 177, 184. 59; Humber, 238; Hunmanbv, Hessle, 240. 240; Gilling, 186; Peak, 175, 188; Heysham anticline, 288. Stublick, 289; Upsall, 175; Vale of High Hazels Coal, 76. Pickering, 175, 188. Holaster planus zone, 186. Fenton Coal, 79. Holderness, 177, 231. Field meeting reports, Conisborough HOLLINGWORTH, S. E., on evaporites, and Don Gorge, 303; Denshaw, 192. 303; Hawes, 304; Pateley Bridge, Hoober Hall, 83. 301; Ripon, 301; S. Durham, 305. Horbury Rock, 62, 64, isopachytes, Filey, Fault, 188; structures in 68, 80. glacial silts, 52. Horden, Durham, 29. Filograna permiana, 220. Hornsea, 176. First Brown Metal Coal, 77. Houghton Main Colliery, 83. Flints, 24-28. Howardian Hills, 174, 181, 184, 231. Flixton, 237. Huggate, 176. Flockton, 77; Coal, 60, 79. Hull, 235. Fobbing, 287. Humber, 177, 179, 187; Fault, 238. Forest Beds, submerged, Durham Hunmanby, 238; Fault, 240. Coast, 23. Hydrobia, 26, Gigantetta, 247; relation to Chonetes, Hydrology, E. Riding, 231. Daviesietta, and Productus, 266; crassiventer sp. nov., 257; dentifer Ironstone, Black Mine, 79. sp. nov., 249; varians, 256. Gigantellids, hemisphaericus-like, of Jack Bank, 105, 111. the S. Pennines, Gilling Fault, 186. Kelleythorpe, 240. Girvanella-Bed, 103, 104, 111, 113. Kimberworth, 64. Glacial Drifts, the secret of, 43, 129. Kimmeridge Clay, 177. Goniatite zones, correlation with Kippax, 80. coral zones, Castlcton district, 112. Kirby Grindalythe, 186. Goniatites antiquatus, 107, 108; Kirkleatham bores, 210-222. crenistria, 103-111; dinckleyense, Kiveton, 75, 79. 111; hudsoni, 106-108, 123; maxi- Knapton, 237. mus, 106-108, 123; sphaericos- triatus, 110, 111; spirifer, 112; Lake District, 285. striatus, 111. Lake Windermere, 285. 314 PROC. YORKS. GEOL. bOC. XXVII

Lamellibranchs, Newhill Mine, Wath- Millington, 236. on-Dearne, 82; non-marine, Mill• Millstone Grit, Bingley, non-marine stone Grit, Bingley, 270. lamellibranchs, 270. Lauria anglica, 27; cylindracea, 27. Moorlog, 25. Lava, Cave Dale, 102-120. Mytilus edulis, 27. Leavening, 175, 177. Leebotwood Basin, 288. Nafferton, 239. Leeds, 58, 73. NAPIER, E., on the lower anhydrite Leicester, 287. seams of the Tees Area, 210. LETTCH, D., see W. R. Barker. Neptunean dykes, 113. Lepidodendron aculeatum, 83; lycopo- Neuropteris giganteus, 83; helero- diodes, 83; obovatum, 83; simile, 83. phylla, 83; microphylla, 83; rariner- Limax arborum, 27. vis, 83; tenuifolia, 83, Limnaea, 26; palustris, 26; trun- New Hards Coal, 77, 78. catula, 26. Newhill Mine, Wath-on-Dearne, Lincoln, 179, 182, 290. fossil plants and non-marine lamel• Lincolnshire, North, structure, 173; libranchs, 82. Wolds, 174, 177. Newthorn, overflow channel, 33. Linoproduclus, 247. Nomismoceras vittegerum, 107. Lithostrotion, 114; arachnoideum, 102; North Creake, 288. junceum, 102-106; m'coyanum, 102; Nottingham, 72. 104; pauciradiale, 102, 106. Nun Low, 109-122. Littorina, 26; littorea, 27, 29. Nyroca ferina, 27. Londesborough, 177. Longmyndian, 282. Oaks Rock, 62, 65, 68; isopachytes, Lonsdaleia duplicata, 108; floriformis 70, 71. 105. Odin Fissure, 107, 110, 119. Lough-Willoughby Anticline, 174- Old Hards Coal, 78. 182. Orionastraea, 114, 117. Lowestoft, 288. Or ton, 287. Osmotherley, bore 180. Maltbv, Third Marine Band, 59, 66; Overflow channel, Accrington, 33; Trough, 59-79. Newthorn, 33. Mammoth, 23. Manifold Valley, N. Staffs., 248. Palaeosmilia murchisoni, 103, 114; Mansfield Marine Band, 59, 66-68, 71. regia, 103-114. Man vers Main Colliery, 83. Parkgate Coal, 72-79, Rock, 62, 63; Mariopteris, 83; nervosa, 82. isopachytes, 66, 79. Marine Band, Clay Cross, 60; Mans• PARKINSON, D., on the Lower field, 59, 66-68, 71; Shafton, 59, Carboniferous of the Castleton 70; Third Maltby, 59, 66; Two District, Derbyshire, 99. Foot, 60, 67; Wentbridge, 59. Pateley Bridge, field meeting report, Market Weighton, 177-187; Anti• 301. cline, 174-184, 291. Peak Cavern, 109; fault, 188. Marpessa laminata, 27. Peaks Hill, 105, 107, 114, 121. Meltonfield Coal, 76, 82, 83. Pennines, Southern, hemisphaericus- Melton Mowbray Anticline, 179. like Gigantellids of, 247. Mexborough Rock, 62, 66, 69; Percolation, estimation for East isopachytes, 72. Riding, 234. Michill Bank, 104, 115, 121. Peringia (Hydrobia) ulvac, 26. Mich Low, 109, 111, 115, 121. Permian evaporite deposits in N.K. Middle Hill, Castleton, Derbyshire, England, petrology of, 217; se• 105-121. quence in S.E. Durham and N.E. Middleton Eleven Yards Coal, 77, Yorkshire, 199. 78; Little Coal, 77, 78; Main Coal, Petasina fulva, 27. 77. Petrology, Sorby's work on, 14. Middleton Tyas, 180, 203, 289. Peveril Castle, 118. Miller's Dale Beds, 102; Limestone, Pickering, Vale, 174; fault, 188. 117. Pin Dale, 99-121. INDEX VOL. XXVII 315

Pinnularia, 83. Sagittoceras discus, 107. Pisidium personatum, 27. Sands, glacial, 51. Planorbis leucostoma, 26. St. Bees, bore, 196, 221. Plants, Newhill Mine, Wath-on- Scorbicularia piperita, 26, 27. Dearne, 82. Scorton, 203. Pontefract, 64, 73, 75, 232. Seaton Carew, 23, 204, 213. Prees Syncline, 288. Second Brown Metal Coal, 75, 77. PRENTICE, J. E. on hemisphaericus- Sedburgh, 285. like Gigantellids of the Southern Sedimentation, Sorby's work on Pennines, 247. mechanism of, 7. Productus, 102, 109, 110, 115; Sewerby, 238. (Krotovia) granulosus, 261; hemi- Shafton, Coal, 59, 68, 69; Marine sphaericus, 109, 247; {Dictyo- Band, 59, 70. clostus) Hindi, 261; (Dictyocloslus) Shap Wells, 285. Hindi wettonensis, 261; mints, 250, Sheffield, 58-79; Ganister Coal, 60. 0, 249; productus, 109; pugilis, 110, Sherburn, 236. 115; striatus, 110, 115; {Dictyo- Shrewsbury Basin, 288. clostus) sulcatus, 261; tissingtonen- Siggate, 109-121. sis, 111, 115; (Eomarginifera) cf. Silkstone, Coal, 74-79; Four Foot triquetrus, 261; relation to Gigan- Coal, 78; Rock, 62, 63, isopachytes, tella, 266. 65, 76, 78. Prolecanites discoides, 106. Silts, glacial, 51. Pronorites cyclolobus, 107. Skiddaw, 285. Pugnax accuminatus, 110; pugnus, Slaty Cleavage, Sorby's work on, 2. 106, 122. Sledmere, 233. Punctum pygmaeum, 27. Sorby, Henry Clifton, the geological work of, 1. South Newbald, 236. Raisdale, 242. Speedwell, Mine, 109; Vent, 112, 120. Redcar, 204, 213. Speeton, 184, 186, Clay, 175. Retford, 60, 64. Sphenophyllum cuneifolium, 83; saxi- Retinella nitidula, 27; pura, 27; fragaefolium, 83. radiatula, 27. Sphenopteris, 82; striata, 82. RhyncHonella cuvieri zone, 186. Spilsby, 187. Riccall, wells, 233. Spirifer bisulcatus, 105; grandi- Ripon, field meeting report, 301. costaius, 109, 110. ROPERTSON, T., on the Permian Spital, 291. sequence of S.E. Durham and N.E. Stanley Main Coal, 76. Yorkshire, 199. Stixwould, 286. Robin Hood's Bay, 175. Stublick Fault, 289. Rock, Ackworth, 59; Barnsley, 62, Sus, 28. isopachytes, 69; Chevet, 69; Dalton, Swallow Wood Coal, 76. 70; Haigh Moor, 62, isopachytes, Swilley Coal, 78. 67; Horbury, 62, isopachytes, 68, Swinton Pottery Coal, 59. 80; Mexborough, 62-69, isopa• chytes, 72; Oaks, 62, 65, 68, iso• Taddington, Derbyshire, 250. pachytes, 70, 71; Parkgate, 62, Tellina baltica, 27. isopachytes, 66, 79; Rotherham Terebratulina lata zone, 186. Red, 62, 65, isopachytes, 72; Silk- Third Brown Metal Coal, 77. stone, 62, isopachytes, 65, 76, 78; Thixendale, 176. Swallow Wood, 62; Wickersley, Thornecliffe, 79; Coal, 78. 70; Woodhotise, 62, isopachytes, Thornc, 58, 61, 64; Basin, 59-72. 67; Woolley Edge, 62-68, isopa• Thorpe Bassett, 186. chytes, 70, 71, 83, 84. Three Bed Coal, 74. Roker forest bed, 29. Thurcroft, 70. Rossendale Anticline, 286. Till, Basement, 45; Upper, 53. Rotherham, 59, 63, 65, 74, 78; Red Tockett's Bore, 210, 213. Rock, 62, 65, isopachytes, 72. Topcliffe, 181. Royston, 58. Top Hard Coal, 66; facies, 80. 316 l'KOC. YORKS. GEOL. SOC. XXVII

Towy Anticline, 285. Weeley, 288. Treak Cliff, 103-123. Welton, 236. TRECHMANN, C. T., on the sub• Wentbridge, Top Marine Band, 59. merged forest beds of the Durham West Heslerton, 175. Coast, 23. Wharfc Anticline, 180. Trochulus hispidus, 27. Wharram, Cowcliffe Quarry, 186. TURNER, J. S., on the deeper struc• Wharram Percy, 236. ture of Central and Northern Wheatley Lime Coal, 77, 78. England, 280; (and H. C. Versey), Whitburn, Durham, 30, 31. bibliography of Yorkshire Geol• Whitby, 204; Syncline, 291. ogy, 1947-1948, 298. Wickersley Rock, 70. Two Foot Marine Band, 60, 67. WILCOCKSON, W. H., on the geo• logical work of Henry Clifton Unio, 26. Sorby, 1; on some variations in the Coal Measures of Yorkshire, Upsall Fault, 175. 58. Willoughby, 179; Anticline, 174-182. Vale of Mowbray, 181; Pickering, Wilton, 210, 214. 174, 175; York, 180, 181. Windy Knoll, Derbyshire, 103-123. Valvata cristata, 26. Winnats, 99-122. VERSEY, H. C, on the structure of Wintringham, 236. E. Yorkshire and N. Lincoln• Wolds, Lincolnshire and Yorkshire, shire, 173; on the hydrology of the 174, 177. E. Riding, 231; see J. S. turner. Wombwell, 83. Vertigo antivertigo, 27; pusilla, 27; Woodhouse, Rock 62, 63, isopa- substriata, 27. chytes, 67. Virgatites, zone, 184. Woolley, 58; Edge Rock, 62-84. Vitrea crystattina, 27. Worksop, 65; Waterworks bore, 220.