844 



aENEEAL INDEX. 



" Dhoiie " or sluice-box, for gold- 

 washing, 648. 



Diabase of the Sam district, 448. 



, Hornblende-, of the Sam 



district, 450. 



Dimetian of Laurentian age, 800. 



Bimoi^phograptus-confertus zone, 662, 

 665, 680, 683, 686, 687, 688, 693, 

 694, 698, 700, 707, 715. 



Dimorphograptus confertus, zone of, 

 in Skelgill beds, represented by the 

 zone of Diplograptus vesiculosus in 

 Birkhill shales, 707. 



Dinas Dinorwic, section from, to Llyn 

 Padarn, 287. 



Dinas Llwyd, disturbed masses near, 

 489 ; section on west side of, 489. 



Dinas Mawr, section through, 287. 



Dinosauria, Prof. H. Gr. Seeley on the 

 classification of the, 85. 



Dinosaurs, Mr. E. Lydekker on some, 

 46. 



Diorite, formation of " eyes " of, in 

 Hornblende-schist, 392. 



, metamorphosis of, into horn- 

 blende-schist, 392. 



of the Sarn district, 447. 



Diorites of central Anglesey, 497. 



Diplograptus acuminatus, zone of, in 

 Browgill, 680 ; at base of Birkhill 

 shales, comparison of, with same 

 zone in Skelgill beds, 707. 



vesiculosus, zone of, in Birk- 

 hill shales, represented by the 

 zone oi Bimorphograpt'iis conferUis, 

 in Skelgill beds, 707. 



Directions of Ice-flow in the north of 



Ireland, Mr. J. E. Kilroe on the, 



827. 

 Dolerite-dyke, formation of " eyes " 



of diorite in, 392. 

 Dolerite-dykes of the Sarn district, 



460. 



in Archaean gneiss of North- 

 west Highlands, 389. 



Donations to the Library and Mu- 

 seum, Froc. 97. 



Donegal, Dr. F. H. Hatch on the 

 spheroid-bearing granite of Mul- 

 laghderg, 548. 



Dordrecht, S. Africa, intrusive trap- 

 sheet at, 254. 



Dorset, Eev. O. Fisher on the occur- 

 rence of Elephas meridionalis at 

 Dewlish, 818. 



Down, tachylyte from, 305. 



Downton Sandstones, 814. 



Drifts of North Wales, fossils of the, 

 120. 



Dublin, Mr. V. Ball on the probable 

 mode of transport of the fragments 



of granite and other rocks found 

 imbedded in the Carboniferous 

 Limestone of the neighbourhood of. 

 371. 



Durham Salt-district, Mr. E. Wilson 

 on the, 761 ; map of the, 762 ; area 

 of the, 773. 



Durness Limestone, American type of 

 fossils in the, 806. 



and Eriboll, section of Si- 

 lurian at, 404. 



Dusky Sound, New Zealand, Capt. 

 F. W. Hutton on a hornblende- 

 biotite rock from, 745. 



Dwj'ka conglomerate, 241 ; at Gra- 

 hamstown, 242; on the Witte- 

 bergen, 243; in the Buffels Eiver 

 valley, 243. 



Dyke, basic, in Man-of-War Eocks,311. 



, felsite, at Appletreeworth Farm, 



697. 



in Quadrant Island, 313. 



Dykes, dolerite-, of the Sarn district, 

 460. 



, formation of, relation of hori- 

 zontal movements of rocks to the, 

 783. 



, intrusive, in the Archaean rocks 



of the North-west Highlands, effects 

 of later Pre-Cambrian movements 

 upon, 391. 



, porphyritie and granitic, in 



the Seringaptam area, 647, 648, 

 649. 



Eastern District of Anglesey, 503, 513. 

 Easthampstead Plain, Bagshot beds 



on north flank of, 164. 

 East Hesterton, section of Eed Chalk 



at, 337. 

 Ecca Beds, near Grahamstown, 244. 

 Eclogite of the Melkote area, 639, 651. 

 Ehrenhergina bicornis, 5. 

 Elephas meridionalis, Eev. O. Fisher 



on the occurrence of, at Dewhsh, 



Dorset, 818. 

 Elliot lode, 646. 



Ellipsoidina elUpsoides, var. oblong a, 5. 

 Elphin, section from, to Allt Ealag, 



426. 

 Encrinurus punctatus, zone of, 668, 



672, 690. 

 England, marine fossils from the 



coal-measures of, 751. 

 , Prof. Prestwich on the cor- 

 relation of the Eocene strata in 



Belgium, the north of France, and, 



88. 



, Silurians of, 812. 



Enoch Eock, schist and gneiss from, 



317. 



