GEiNERAL INDEX 



TO 



THE QUARTERLY JOURNAL 



AND 



PROCEEDIITGS OF THE GEOLOGICAL SOCIETY. 



Aberdeen Creek (Sierra Leone), 309, 

 321. 



Aberfoyle Slates, 98 et seqq. 



Albitization of dia,bases, 270. 



Alt-Ddu Mndstones, 139-40 ; faimal 

 list. 171. 



Aluminous xenoliths in Mull rocks, 

 240-54 & pis. vii-x. 



Analyses of pierite, 265 ; of bostonite, 

 266 ; of mugearite. 267 ; of Sierra- 

 Leone norite. 307. 



Anatase in Plioc. deposits of Corn- 

 wall, 359, 363, 365. 



Andalusite in Plioc. deposits of Corn- 

 wall, 359, 362, 363-64, 366. 



Andrews, C. W., Description of a 

 New Plesiosaur from the Weald 

 Clay of Berwick (Sussex), 285-98 

 fig. & pis. xiv-xv. 



Annual General Meeting, vlii et seqq. 



Anorthite in xenolithic intrusions of 

 Mull, 244 et seqq. & pis. viii-x. 



Apatite in Sierra-Leone noritic com- 

 plex. 329. 



Aplite. noritic, of Sierra Leone, 316- 

 17, 322-23, 340-41 & pi. xix. 



Appin & Ballachulish Folds. 108-109 



fig. 

 Appin Quartzites, &c., 104 et seqq, 

 Arauca rites cutchensis, 274 & pi. xii. 

 Ardmeanach, see Mull. 

 Ardmucknish. (Argyll), geology of 



district betw. Ben Lui and, 108-25 



w. maps & sect. 

 Ardrisbaig Group, 96 et seqq. 

 Asaphns-poivisi fauna, 171. 

 Ashgillian of the Bala district, 137 



et seqq. ; A. fauna ibid., 164; A. of 



the Llangollen district, 1 80 et seqq. ; 

 A. south of the Llangollen Syncli- 

 norium, 186-88 ; relat. of do. to 

 Caradocian. 188-89; A. north of the 

 Llangollen Synelinorium, 190-91. 



Assets, statement of, xxxYii. 



Auditors elected, iv 



Augite in altered norites, 338-39, 

 341 & pi. xix. 



Avonian of Broadfield Down, 227-28. 



Bailey, E. B., on the Structure of 

 the South-West Highlands of Scot- 

 land, 82-127 figs. & pi. i (geol. 

 map), 130-31. 



Bala country (Merioneth), its struc- 

 ture & rock-succession, 132-75 

 figs. & pi. ii (geol. map) ; sect, to 

 Moel-fryn, 136 ; Bala-Lake Dis- 

 placement, 160 ; Bala formation in 

 Llangollen district, 179 et seqq. 



Balance-sheet for 1921, xxxii-xxxiii. 



Ballachulish & Appin Folds, 108-109 

 fig-. 



Ballappel ' Foundation ' (tectonic), 

 104-106, 111-12, 117 et seqq. 



Banana Is. (Sierra Leone), 303, 310. 



Barlow-Jameson Fund, list of re- 

 cipients, xxix. 



Barrington (Somerset), sects, descr., 

 449, 451. 



Basement-beds, see G&vlt. 



Bauxite in Sierra Leone, 322. 



Beerbachite of Sierra Leone, 313-15, 

 339-40 & pis. xvii-xix. 



Beinn Bheula, see Ben Ledi. 



Ben-Lawers Schists, 98 et seqq. 



Ben-Ledi Grits, 98 et seqq. 



