GENERAL INDEX. 



649 



Stonesfield, section of Great Oolite 

 near, 171. 



Strathcarron, metamorphic rocks of, 

 148. 



Strength-constants of Japanese rocks, 

 139. 



Strome Ferry, 153. 



Stronchrubie Basin, 395. 



Stylina conifera, 180. 



— solida, 180. 



Subsidence, as producing lake-valleys, 

 75. 



Surface, pre-drift, of the land, 120. 



Switzerland, Jurassic Astrorhizidae and 

 Lituolidas from, 25. 



Synclinal folds, as producing valley- 

 lakes, 73. 



Tachylyte of the Western Isles of 



Scotland, 444. 

 Taeniopteris Beyrichii, Proc. 3. 

 Tawney, E.B., Esq., and H. Keeping, 

 Esq., on the section at Hordwell 

 Cliff's from the top of the Lower 

 Headon to the base of the Upper 

 Bagshot Sands, 566. 

 Terebratula Tawneyi, 536. 

 Tertiaries, Lower London, Mr. J. S. 

 Gardner on some modifications in 

 the classification of the, 197. 



of the Troad, 630. 



Thamnastrsea arachnoides, 558. 



concinna, 559. 



Lyelli, 188. 



mammosa, 190. 



microphylla, 188. 



Waltoni, 189. 



Thamnonema pisi forme, 549. 

 Thanet beds, 200. 

 Thecosmilia Slatteri, 182. 

 Thracia leguminosa, 531. - 



Studeri, 531. 



Thrust, lateral, its effects in producing 



lake -valleys, 78. 

 Thurammina papillata, 27. 

 ■ hcmisphcerica, 28. 

 Tidal mud of the Severn, microscopical 

 examination of the, 613. 



sediment of the estuaries of the 



Severn and its tributaries, Prof. W. 

 J. Sollas on the nature and origin of 

 the, 611. 

 Tomes, R. F., Esq., on the fossil Ma- 

 dreporaria of the Great Oolite of 

 the counties of Gloucester and Ox- 

 ford, 168. 



. , on some new or imperfectly 



known Madreporariafrom the Coral 

 Rag and Portland Oolite of the 

 counties of Wilts. Oxford, Cam- 

 bridge, and York, 555. 



Topley, W., Esq., Appendix to Mr. J. 

 S. Diller's Notes on the Geology of 

 the Troad, 633. 



Torridon Sandstone, 360. 



Tortoise, young, development of plas- 

 tron in, 137. 



Toxoceras Orbignyi, 488. 



Trent, modern course of the, 606 ; 

 ancient gravels of the, 607 ; diver- 

 sion of the, 608. 



Trent Valley, 606. 



Trias, red sand and rubble debris of 



. the, 122. 



Tricycloseris Umax, 191. 



Troad, Mr. J. S. Diller on the Geology 

 of the, 627. 



, map of the, 628. 



Tuff and conglomerate, interstratifioa- 

 tion of, St. David's, 290. 



Tuffs, Lower Cambrian, of St. David's, 

 295, 307 ; analyses of, 296, 297. 



Tunnel-Hill cutting, fossils from the 

 Upper Bagshot Sand in, 352. 



Ty-fry, St. Fagans, Cardiff, section of 

 quarry in Lower Lias at, 48. 



Ullapool, section from, to S.S.E., 363 ; 

 to S.E., 365; to E.S.E., 365; to 

 the E.N.E., 366. 



river, section along south side of, 



366 ; section along the north side of, 

 366. 



Upper Limestone of Murchison non- 

 existent, 386. 



Upton, drift-deposits of, 93; section 

 in sand-pit at, 93. 



Valley-lakes, Rev. A. Irving on the 



origin of, 73. 

 Vegetable remains in amber, Proc. 



66. 

 Victoria, Mr. A. W. Waters on fossil 



Chilostomatous Bryozoa from, 423. 

 Vine, G. R., Esq., on the Corals and 



Bryozoans of the Wenlock Shales, 



Proc. 69. 

 Volcanic group of Lower Cambrian, 



St. David's, 294. 

 Vyrnwy Water-works, drift-deposits 



at, 116. 



Wales, North. Mr. D. Mackintosh on 



the positions of boulders in, Proc. 



67. 

 , Mr. T. M. Reade on the Drift - 



beds of the North-west of England 



and, 83. 

 Walford, E. A., Esq., on the relation 



of the so-called Northampton Sand 



of North Oxon to the Clypixs-gxii, 



224, 



