778 



GENERAL INDEX. 



[Nov. 1899, 



Diabases, in Malvern area, 158, 161, 

 163, 164 ; intrus. of granite into, 

 at Sorel Point, 430-448 figs. & 

 pis. xxix-xxx (microsc. sects.) ; diab. 

 of Davos district, 397-398; boul- 

 ders in Spitsbergen, 689 ; diab, on 

 Waterford coast, 727, 730, 736 ; use 

 of term, 169. 



Diagonal faults of E. side of Groden 

 Pass, 573-574 ; of Pralongia-Sora- 

 ruaz, 585, 615 ; Stuores bundle of, 

 615-616 ; diag. dispos. of Dolomite- 

 massives w. respect to Groden Pass 

 anticline, 575-576 ; charact. furcat. 

 ofdiag. faults, 581-582. 



Diallage- rocks in Anglesey, 279, 290. 



Diatom -frustules, formg. iridescent 

 scales in radiolar. earths of Trinidad 

 & Barbados, 186-187. 



DiBLEY, G. E., exhib. specims., xc. 



Dicranuffra2)tus-heds of Penterf yn, 640, 

 672. 



Diganwy (Caernarvon), nodular fel- 

 sites at, 175. 



Dinas-bach (Anglesey), enstatite- 

 gabbro of, 293. 



Diopside (white augite) of Glenelg, 

 376,377. 



Diorite in Atlas Mts., 205, 207, 210. 



Distriactis vetusta,a^. nov,, 53&pl.ix. 



Divining-rod, & the search for water, 

 Ixxi-lxxii. 



Dodd's Barn (Shropshire), Perm, at, 

 108, 109. 



Dolerite in TidesweU Dale, 240 et seqq., 

 245-247 & pi. XX (microsc. sects.) ; 

 in Holyhead I., 294; in Loch Awe 

 region, 479 ; of Dunabrattin, etc., 

 736, 739. 



Dolomites, torsion - struct, in, 560- 

 634 figs. & pi. xl (map) ; Oarb. 

 dolom. in Spitsbergen, 688 ; Permo- 

 Carb. ibid., 689. 



Dolomitic Wenlock Limestone-pebbles 

 in Middle Perm, conglom., 120-121 

 & tables iii-iv ; dolomitic veins in 

 Anglesey serpentine, 277. 



Dolomitization influenced by torsion- 

 strains, 609 ; dolomit. of Llan- 

 badrig limestone, 669. 



Dolomitized limest. in Garb, rocks 

 betw. Ashbourne & Crake Low, 227, 

 236 ; breccia in Draughton Quarry, 

 334; limest. of Cracoe & Settle, 

 341. 



Donald, Miss J., on Ectomaria & 

 Hormotoma, w. Descr. of Brit. Spp., 

 251-272 & pis. xxi-ixii. 

 Doneraile Cove (Waterford), cliff- 

 sect, betw. Tramore and, 726 ; cliff- 

 sect. N. of, 729. 



Doneraile Walk (Waterford), sects, 

 descr. & fig., 727, 728. 



Dorfliberg anticline (Davos), 406. 



Lorysphara echinata, sp. nov., 45 & 

 pi. viii. 



Downham (Lanes), limest.-knoUs of, 

 338, 339. 



Downton Sandstone-pebble in Perm. 

 conglom,, 121 & table iii. 



Drainage, new system in conn. w. Geol. 

 Soc. Apartments, x; dr. of ice- 

 sheets in Spitsbergen, 685-686 & 

 pi. xlvii. 



Draughton Quarry ( Yorks ), sect, 

 descr. & fig., 331-337 ; breccias of, 

 344 fig. 



' Dreikanter ' or pyramid-pebbles, xc- 

 xci. 



Drift, to be avoided in reservoir-sites, 

 Ixix ; Drifts of S. & E. Engl., schorl- 

 rock pebbles in, 220-223 ; Dr. betw. 

 Ashbourne & Crake Low, 225, 226, 

 237, 238 ; relats. w. Chalk in Moen 

 & Eiigen, 305-326 figs. 



Drift-maps, necessity for, Ixxix ; MS,, 

 of E. Counties, pres. by F. W. 

 Harmer, v. 



Druppalonche clavigera, gen. et sp. 

 nov., 217 & pi. xvi. 



ovata, sp. nov., 218 & pi. xvi. 



Ducan fold (Davos), 400 & pi, xxvii 

 (sect.). 



Dun, W. S,, quoted, 19, 37. 



Dunabrattin (Waterford), Lr. Paleeoz. 

 of, 736-737 w, sect. & lists of foss. 



Dunoon Phyllite Series, 471. 



Duron-Tiers torsion- system (S.Tyrol), 

 626-627. 



Diirrenstein Mountain (S. Tyrol), tec- 

 tonics of, 624-625. 



Dyke-and-sill phenomena of Groden 

 Pass, 577 ; dykes in crush-zones of 

 N. Anglesey, 666 ; see also Basalt, 

 Dolerites, etc. 



Earth-movements, producing striae in 

 conglom., 11-15, 128 ; producing 

 knoll-struct., 337, 339 et seqq., 357 ; 

 producg. breccias, 343 ; e.-m. & their 

 effects in N. Anglesey, 650-667, 

 677-678 ; see also Torsion-struc- 

 ture. 



Eastern Counties, Drift-maps pres. by 

 F. W, Harmer, v. 



Echinocystis, Protocidaris possibly re- 

 ferable to, 710. 



poTMim, 707-709 figs. 



Echinodermata, modified classif. of, 

 715. 



