GENERAL INDEX. 



935 



Cretaceous rocks, Arctic, 561 , 562 ; in 

 the Upper Punjab, 362 ; of the West- 

 ern Highlands, 728. 



Crinoids, Arctic, 590. 



Crocodilia, Mr. J. W. Hulke on two 

 skulls from the Wealden and Pur- 

 beck formations, indicating a new 

 subgroup of, 377. 



Crocodilian jaw, Mr. E. T. ISTewton on 

 a, from the Corallian rocks of Wey- 

 mouth, 398. 



Crocodilus, cranium of, 423. 



Cronklev. Silurian beds at, 28. 



Scar, 32. 



Crosscleuch, section above, 266, 279. 



Crossness, well at, 902, 913. 



Crustacea from the calciferous sand- 

 stone series of Edinburgh, 4. 



Crustaceans, undetermined Arctic Si- 

 lurian, 593. 



Culm-measure grits and shales ex- 

 posed by the highroad between Tor- 

 rington and Bideford,opposite Wear 

 Gifford, 54. 



Cumble Tor, dolerite and lava of, 490. 



quarry, section exposed in, 



490. 



Curvature, terminal, Mr. W. A. E. 

 Ussher on, in the south-western 

 counties, 49. 



Cwm Bach, section through, near 

 Newgale in St. Bride's Bay, 166. 



Cyathophyllum articulatum, 584. 



Cy otolites c-upuliformis, 191. 



Cyrtoceras, sp., 608. 



Daintree, E., Esq., on certain modes 

 of occurrence of gold in Australia. 

 431. 



Dairy, slaty agglomerate of, 476. 



Dan Beck, section across, 881, 



Dana-Bay beds, 559. 



Daptinus intermedins, 440. 



, sp., 445. 



Daubree, Prof. A., on points of simi- 

 larity between zeolitic and siliceous 

 incrustations of recent formation by 

 thermal springs, and those observed 

 in amygdaloids and other altered 

 volcanic rocks, 73. 



Davies, T., Esq., on some Precam- 

 brian rocks in Caernarvonshire, 147. 



, on a rock- specimen from the 



centre of the so-called porphyritic 

 mass of Tal-y-sarn, 152. 



, on the microscopic structure of 



some Dimetian and Pebidian rocks 

 of Pembrokeshire, 164. 



Dawkins, Prof. W. B., on the history 

 of the Deer of the European Mio- 

 cene and Pliocene strata, 402. 



Dawson, Dr. G. M., on the superficial 

 geology of British Columbia, 89. 



Deer, Prof. W. B. Dawkins on the 

 history of the, of the European 

 Miocene and Pliocene strata, 402. 



Dentaliidas, subdivisions of, 56. 



, Cretaceous, Mr. J. S. Gardner 



on the, 56. 



JDentalium acuminatum, 62. 



alatum, 60. 



cylindricum, 61. 



decussatum, 58. 



divisiense, 60. 



Jeffrey ai, 61. 



medium, 59. 



Deposits overlying glaciated rocks, 

 Victoria, Yancouver Island, 96. 



, superficial, of Gibraltar, proba- 

 ble succession of events during the 

 accumulation of, 530. 



De Eance, C.E., Esq., and Capt. H. W. 

 Feilden on the geology of the coasts 

 of the Arctic lands visited by the 

 late British Expedition under Capt. 

 Sir George ISares, K.C.B., 556. 



Devon, Pleistocene deposits of, Mr. 

 W. A. E. ITssher on the chronologi- 

 cal value of the, 449. 



Devonian Arctic fossils, 632. 



rocks, discovery of, in Meux's 



boring, 904. 



slate between Houghton and 



High Week, Xewton Abbot, 54. 



Devonians of the Arctic regions, 557, 

 559. 



Devonshire, possible glaciation of, 

 50. 



Diallage, analysis of, from an Ayr- 

 shire gabbro, 779. 



Dicroceros elegans, 403. 



Dimetian, dyke and band in, east of 

 Porthlisky, St. David's, microscopic 

 structure of, 144. 



Dimetian and Pebidian rocks, Dr. H. 

 Hicks on some, in Caernarvonshire, 

 147. 



Dimetian and Pebidian rocks of Pem- 

 brokeshire, Dr. H. Hicks on the, 

 153. 



Dimetian rocks of Pembrokeshire, 

 153 ; microscopic structure of, 155, 

 164. 



" Dioritic" rocks of Ayrshire, 772. 



Discina nitida, 10. 



Disco Island, analvsis of coal from, 

 563. 



Dobb's Linn, typical section at, 247 ; 

 Moffat series of, and Craigmichan 

 Scaurs, vertical section showing the 

 subdivisions of the, 250; Lower 

 Hartfell shale at, vertical section of, 



