406 



GENEBAL INDEX. 



[vol. lxxvi, 



Be Geer, G. J., Wollaston Medal 



awarded to, xl-xli. 

 Delthyrial angle & delthyrial sup- 

 porting plates in brachiopods, 164. 

 Deroceras armatum, 70. 

 Derwas Fault, 310-12. 

 Devonian of Taya-Taya, &c, 34-38 



fig - , w. list of foss. & pis. i, v ; of 



Tirapata district, &c, 39 et seqq. ; 



of Ferques, 228-37 & pi. xiv (map 



& sect.). 

 Diabases of Arthog-Dolgelley district, 



280-83. 

 Dictyonema Band (Lr.),262; (Upper), 



263-64. 

 Diorite of Maravillas, 33-35 ; see 



also Augite-diorite. 

 Diplodocus, model presented byH. N. 



Hutchinson, lxxxvii. 

 Dixey, F., 163. 

 Dixon, H. N., [on Pre-Glacial Mosses 



fr. Castle Eden], 110. 

 Dolerite fr. Mollendo, 11 &pl. ii. 

 Dolgelley- Arthog district (Merioneth) , 



Lr. Palaeozoic of, 254-324 figs. & 



pis. xvi-xx. 

 Donors to Library, lists of, xiv-xvii. 

 Borypyge-lakei Flags, list of foss., 



373. 

 Douglas, J. A., Geological Sections 



through the Andes of Peru & 



Bolivia : II — From the Port of 



Mollendo to the Inambari River, 



1-59 figs. & pis. i-vi. 

 Drifts, see Glaciation. 

 Dymes, T. A., 145. 



Earth-movements in Arthog-Dolgelley 



district, 306-309 : in Scandinavia, 



see Mountain problem. 

 Earthquake at Rabaul, v-vi ; earth- 

 quake waves & the elasticity of the 



Earth, lxxxviii-lxxxix. 

 Echioceras raricostatum, 70. 

 Eheolite- syenite fr. Ollachea, 51 ; 



elasolite-syenite-porphyry fr. Bio 



San Gaban, 50-51. 

 Election of Auditors, vii ; of Council 



& Officers, xxi ; of Fellows, ii-iii, 



viii, ix, lxxxiv, lxxxv, lxxxvi, 



lxxxvii, lxxxix. 

 Elephas meridionalis fr. Pliocene of 



Durham, lxxxi, 108. 

 El Misti (Peru), crater of, 27 & pi. iv. 

 Elsden, J. V., [re-elected Treasurer], 



xxi. 

 ' Eolith ' factory beneath Thanet 



Sand, 238-53 figs. & pi. xv. 

 England, features of Pleistocene 



glaciation of, lxi-lxxxiii w. map. 



Epidote in rocks of Arthog-Dolgellev 



district, 323, 324. 

 Erica cf. vagans, 133-34 & pi. ix. 

 Escasona (?) spp. indet., 368 & pi. 



xxiv. 

 Estimates for 1920, xxxii-xxxiii. 

 Etheridge, R., obituary of, lix-lx. 



Falconer, H. [bust presented], 



lxxxix. 

 Falconer, J. D., award fr. Lyell 



Fund to, xlvi. 

 Famennian of Ferques, 233. 

 Faunal analyses (Liassic ammonites. 



&c), 63-86 figs. 

 Faulting in Arthog-Dolgelley district, 



309-15 w. map. 

 Fellows elected, ii-iii, viii, ix, lxxxiv, 



lxxxv, lxxxvi, lxxxvii, lxxxix ; names 



read out, i, lxxxix-xc ; number of, 



xviii-xix. 

 Felspar-twins in Crogenen grano- 



phyre, 292 fig. 

 Ferques (Lr. Boulonnais), Devonian 



of, 228-37 & pi. xiv (map & sect.). 

 Ffestiniog Beds, 259-60. 

 Fiennes Shales & Sandstone, 232. 



233. 

 Financial report, xxxii-xxxix. 

 Finmarken (N. Norway), geological 



features of, 393-95 fig., w. map on 



392. 

 Ford, J., obituary of, lix. 

 Foreign Members, list of, xxii ; For 



Correspondents, list of, xxiii. 

 Frasnian of Ferques, 231-32. 



Gadeceatt, E., 145. 



Garwood, E. J., 163 ; [receives 



Lyell award for J. D. Falconer] 



xlvi. 

 Geikie, Sir Archibald, [re-elected 



Foreign Secretary], xxi; [letter 



regarding Russian geologists], 



lxxxv ; [communicates 0. Holte- 



dahl's paper], 387. 

 Gelli-llwyd (Merioneth), sect, to 



Arthog Valley, 277. 

 Gentiana (Aptera) sp., 134 & pi. x. 

 Gibson, E., obituary of, lviii. 

 Givetian of Ferques, 230-31. 

 Glaciation of England, Pleistocene, 



lxi-lxxxiii w. map. 

 Gloucestershire-Worcestershire Lias, 



dating & faunal distribution, 100. 

 Gneiss fr. Mollendo, 9-10; fr. 



Cerros de la Caldera, 22-23 & 



pi. ii. 



