17 



Ari 



Ardnamurchan (Mull), volcano of, xxx. 

 250 ; columnar lavas, etc. of Beinn Shiant, 

 xxx. 261 et seqq. figs. ; New Red in, xxxiv. 

 692; Lr. Lias in, xxxiv. 707; Middle 

 Lias of, xxxiv. 714 ; microsc. struct. 

 of gabbros & basalts in, xlii. 89 et seqq. 

 & pis. iv., v., vii. 



Ardi-ossan (Ayr), section nr., xv. 2. 



Ardsbiel peninsula (Argyll), section, xvii. 

 266 ; quarries, incl. in granite of, w. 

 chem. anal., xxxvi. 14, 15. 



Ardtallanaig (Perth), metalliferous ores, 

 etc. at, xv i. 423. 



Ardtornisb (Mull), section at Innimore 

 of, xxxiv. 673 ; Carb. reefs at, xxxiv. 684. 



Ardtrea (Tyrone), limest. of, xiii. p. cxxviii. 



Ardtun (Mull), leaf-beds of, vii. 91-103, 

 viii. p. lxxvii, xli. 92, xliii. 270-300 

 figs. & pis. xiii.-xvi. ; flora of same, xliii. 

 288 ; plant-remains comp. w. those fr. 

 Antrim, xxv. 360; mud-streams, evid. 

 of, xxx. 228; gravel ibid., xliii. 276, 

 278 ; tachylyte ibid., xliv\ 300 et seqq. 

 & pi. xi. 



Ardwell (Ayr), geol. map of coast-line 

 to Shalloch Forge, xxxviii. pi. xxv. 



Ardwell Shales & Flags (Girvan success.), 

 xxxviii. 594 ; in Penwhapple Glen, 

 xxxviii. 605 ; E. & W. of same, xxxviii. 

 611. 



Ardwick (Lanes), ii. 13 et seqq. ; gen. 

 section, xxxiii. 18 & pi. i. 



Arenaceous strata in Palseoz. of N.Y. 

 State, xv. 264. 



Arendal (Norway), ^granitic, etc. rocks nr., 

 xi. (Part 2) 9-13. 



Arenicola didyma, gen. & sp. nov., xii. 

 248 & pi. iv. ; changed to Arenicolites, 

 xiii. 204. 



Arenicolites sparsus, sp. nov., xiii. 203 & 

 pi. v. 



uriconiensis, sp. nov., xxxiv. 763. 



■ sp. (Durness quartz-rock), xv. 380 & 



pi. xiii. 



Arenig Group correl. w. Upp. Tremadoc, 

 xxix. 43 ; nr. St. David's, xxxi. 167- 

 195 &. pis. viii.— xi (map, sections, & 

 toss.) ; grap^olites in same, xxxi. 631-672 

 & pis. xxxiii.-xxxvii. ; history of name, 

 xxxi. 170 ; occurr. of phosphate in 

 rocks of, xxxi. 370 et seqq. ; A. felstones, 

 microsc. struct, of, xxxi. 399 ; ashes 

 do., xxxi. 404 ; A. Group in Caernarvon 

 & Pembroke comp., xxxii. 137 ; dis- 

 persal of boulders in N. Wales, xxxii. 

 451 ; quartzite of Stiper Stones, xxxiv. 

 763 ; felstones, S.E. dispersion of 

 boulders, xxxv. 444 ; junct. of same w. 

 that of Eskdale granite, xxxvii. 361 ; 

 Beds in Anglesey, xxxvi. 238, xxxviii. 

 21 ; contemp. w. Skiddaw Slates,- 

 xxxvi. 278 ; equiv. in Bohemia, xxxvi. 

 602 ; rocks generally, type-foss. in, 

 xxxvii. Proc. 100; A. rocks of N. 

 Wales, classif. & fauna of, xxxvii. Proc. 

 102 ; do. of St. David's, fauna of, 

 xxxvii. Proc. 108; numerical anal, of 

 foss., xxxvii. Proc. 115. 



Arenig drift in Vale of Clwyd, xliii. 74 ; 



unconform. at Caernarvon, xlvii. 331 ; 



series in Moelwyn district, xlvii. 374 ; 



vole, rocks in Merioneth, xlvii. Proc. 



105 ; do. in Lake District, xlvii. Proc. 



137; Arenig (or Gr. Ice) Drift, xlix. 



Proc. 82; conglom. at Twt Hill, xliv. 



275. 

 Arenig Fawr (N. Wales), section to Llan- 



gynog, i. 7 ; porphyries fr., i. 8, ii. 297 ; 



& slates, viii. 148 ; list of foss., ix. 177 ; 



section to Llanwddyn, i. 10 ; do. to 



Snowdon, ii. 292 ; dispersal of erratics 



fr., xxxviii. 686. 

 Argas, xix. 90 fig., 92. 

 Argentina, fossil vertebr. fr., 1. Proc. 



146. 

 Arghaneh Maden (Asia Minor), section, 



i. 333 ; copper ores, etc. of, i. 334. 

 Argiline in Venezuela, xvi. 464 ; of 



Naparima Hill, chem. anal, of, xlviii. 



525 ; phys. & other char, of, xlviii. 



526 ; microsc. struct, of, xlviii. 539. 

 Argillaceous strata in Pakeoz. of N.Y. 



State, xv. 263; no. of foss. sp. in same, 



xv. 264. 

 Argillhie, see Argiline. 

 Argillite nr. Beaumaris, xxxix. 475 ; in 



Leicester breccias, xlv. 25. 

 Arqillochelys, gen. nov., fr. Lond. Clay, 



xlv. 236. 

 Argillomis longipennis, gen. & sp. nov., 



xxxiv. 124-130 & pi. vi.; skull of, 



xxxvi. 23-26 & pi. ii. 

 ' Argilolite ' in Portugal, ix. 141. 

 Argyll, Duke of, Tertiary Leaf-beds in 



I. of Mull, vii. 89-103, w. map & 



sections. 

 ■ , Granitic District of Inverary, 



ix. 360-366 w. sections. 

 ■ , Post-Tertiary Lignite or Peat- 

 bed in District of Kintyre [abs.], xxiii. 



196. 

 , Phys. Geogr. of Argyll in Conn. 



w. its Geol. Struct., xxiv. 255-273 



figs. 

 , Pres. Addr. [Glaciation & other 



Phenom. in relat. to Pres. Configur. of 



Earth's Crust], xxix. pp. li-lxxviii, xxx. 



pp. lii-lxix. 

 , Six Lake-Basins in Argyll, 



xxix. 508-510. 

 Argyll's Bowling Green (S.W. Highlands), 



anticlinal, vii. 169. 

 Argyllshire, granitic rocks of Inverarj' 



district, ix. 360-366; raised beaches in, 



xi. 549, xii. 167-169 ; phys. geogr. in 



conn. w. geol. struct, of, xxiv. 255- 



273 figs. ; six lake-basins in, xxix. 508- 



511. 

 Argyope punctata, sp. nov., xxvi. 244 & 



pi. x. 

 wollumbillaensis, sp. nov., xxvi. 243 



& pi. x. 

 Arica (Peru), section to Yungas, xvii. 

 pi. ii. ; no evid. of coast-elev. at, xvii. 10. 

 Arietites. gen. char. & list of spp., xxxviii. 

 Proc. 232. 



