948 



GENERAL INDEX. 



213, 216 ; microscopic structure of 



the, 214, 217. 

 Syringopora parallela, 583. 

 , sp., 609. 



Takasima, coal-formation at, 548. 



Tal-y-sarn, 148. 



, microscopic structure of rock 



from, 152. 

 Tangier, elephant's tooth from, 514 ; 



section of cliff near, 514. 

 Teesdale, Messrs. W. Gunn and C. T. 



Clough on the discovery of Silurian 



beds in, 27. 

 , map showing the position of 



Silurian beds in, 28. 



, volcanic beds in, 34. 



Teleosaurus, 422. 

 Teleosaurus, cranium of, 424. 

 Temperature, possible changes of, in 



Gibraltar, consequent on elevation, 



534. 

 Terrace, geyser-basin and, plan of 



the, at Roto-Mahana, 1 76. 

 Terraces, white Sinter, Rev. R. Ab- 



bay on the building-up of the, of 



Roto-Mahana, 170. 



in British Columbia, 107. 



, gravel, in Devonshire, 450, 



454. 

 Tertiary deposits, Arctic, 562, 564. 

 sandstones and shales in the 



Upper Punjab, 366. 

 Thamnastrcea Etheridgii, 190, 194. 

 Thecocyathus Moorei, 194. 

 Thecosmilia Martini, 186. 



Michelini, 185. 



socialis, 187. 



Terquemi, 181. 



Thermal springs, Prof. A. Daubree 



on points of similarity between 



zeolitic and siliceous incrustations 



of recent formation by, and those 



observed in amygdaloids and other 



altered volcanic rocks, 73. 

 Thirlstane Score, section at, 269, 



279 ; zone of Eastrites maximus 



at, 326. 

 Thompson valley, British Columbia, 



drifts of, 114. 

 Till, section of, near Clife Sheile- 



bost, South Harris, 836 ; sections 



of, Fincastle Road, North Harris, 



837, 840. 

 , of Harris, 835 ; of North Uist, 



846; of South Uist, 852 ; of Barra, 



856. 

 Tin in Japan, 554. 

 Tiu-deposits, Dr. C. Le Neve Foster 



on some, formed by the alteration 



of granite, and on the great fiat 



lode of Redruth and Camborne, 

 640. 



Tin Stockworks, Dr. C. Le Neve 

 Foster on some, in Cornwall, 654. 



Tinivulin, Lower Lias of, 704. 



Tobermory, Middle Lias of, 715. 



Tomes, R. F., Esq., on the strati- 

 graphical position of the corals of 

 the Lias of the midland and west- 

 ern counties of England and of 

 South Wales, 179. 



Torridon sandstone, section illustra- 

 ting the relations of the Poikilitic 

 series of Gruinard Bay to the 

 underlying, 671 ; junction of, and 

 Middle-Lias strata as seen in the 

 island of Scalpa, 673. 



Torrington, culm-measure grits and 

 shales exposed by the high road 

 between, and Bideford, opposite 

 Wear Clifford, 54. 



Toshibets group of Japan, 545. 



Tottenham Court Road, artesian 

 boring in, 902. 



Traigh Chrois, cliff-section south of, 

 824. 



Trebisquite, slaty rock of, 479. 



Trefaiddam, section through, 166. 



Tregarrick, quarry near, 475. 



Tregellan, "greenstone" of, 479. 



Tregian, slaty agglomerate of, 476. 



Treglynn Common, "greenstone" of, 

 484. 



Tremaenhir, section through, 166. 



Trenewth, slaty rock of, 480. 



Trewint, thin elvan of, 485. 



Triassic rocks in the Upper Punjab, 

 358. 



strata of the south-western 



counties, Mr. W. A. E. Ussher 

 on the chronological value of the, 

 459. 



Tricy closer is Anningi, 1 90. 



Trotternish, Middle Lias of, 712. 



Twisden, Rev. J. F., on possible dis- 

 placements of the earth's axis of 

 figure produced by elevations and 

 depressions of her surface, 35. 



Two Bridges, dolerite of, 486. 



Udrigle House, section at, 671. 



Ursa-stage, 558, 549. 



Ussher, W. A. E., Esq., on terminal 

 curvature in the south-western 

 counties, 49. 



, on the chronological value of 



the Pleistocene deposits of Devon, 

 449, 



, on the chronological value of 



the Triassic strata of the south- 

 western counties, 459. 



