Ari 



Arionellus, distrib. of genus in time, 



xxrii. 395. 

 ■ longicephalus, sp. nov., xxviii. 176 & 



pi. v. 

 Arisaig (N.W. Highlands), struct, of 



country betw. Banavie and, xvii. 203. 

 Arisaig (Nova Scotia), i. 30 ; geol. of, 



xx. 333-345 w. map & sections & lists 



of foss., xxvi. 490 ; entomostraca ft., 



xxvi. 492. 

 Aristosttclius pnsillus, gen. nov., xliii. 



221-228 fig. & pi. xii. 

 Arkansas novaculites, 1. 377 et seqq. 

 Arkansite, *comp. w. brookite, vii. (Part 2) 



90;*descr., vii. (Part 2) 112. 

 Arkle, Ben (K.W. Highlands), section to 



Moine thrust-plane, descr. & fig., xliv. 



414, 415. 

 Arksut (Greenland), cryolite of, xii. 140- 



144; cassiterite-veins nr., xv. 606. 

 Armagh, Perm, breccias & boulder-beds in, 



xxix. 402-407 figs. ; fishes fr. Garb. 



Limest. of, xxxviii. Proc. 12. 

 Armancon Valley (Burgundy), map of, S. 



of Tonnerre, xxxvii. 531 ; vert, section, 



xxxvii. pi. xxvi. 

 Armathwaite (Cumberland), sections in 



drift nr., xxxi. 90, 91. 

 Armathwaite & Cockfield dyke, expos. 



of, xl. 209; petrol, of, xl. 213; chem. 



anal, of, xl. 224; action of lrydro- 



chloric acid on rock of, xl. 224 ; gen. 



relat. of rock, xl. 226. 

 Armboth (Lake District), quartz-felsite 



dyke, fluid-cavities in, xxxi. 585 & pi. 



xxx. ; A. Fell, section to Threlkeld 



Station, xxvi. 605. 

 Armenia, *Palaeoz. of, ii. (Part 2) 93. 

 Armentara Alp (S. Tyrol), xlix. 65. 

 Armentieres (France), section descr., xi. 



243. 

 Arnaboll, Ben (Sutherland), sections, xvi. 



234, 235 ; ground betw. Ben Heilem and, 



xxxix.402; ground bet w.Druim-an-tenigh 



and, xxxix. 407; struct, of, xxxix. 403 



w. sections; A. Valley, junction S. of, 



xxxix. 405. 

 Arnaboll Series def ., xxxix. 358 ; gneisses 



of, xxxix. 396. 

 Arno Valley (Tuscany), section to Mosciano, 



v. 278 ; see also Val d'Arno. 

 Abnold-Bembose, H. H., Microsc. 



Struct, of Garb. Dolerites & Tuffs of 



Derbyshire, 1. 603-644 & pis. xxiv.-xxv. 

 Aenott, N., obituary of, xxxi. p. liii. 

 Arragonite at Vichy, vii. 80 ; coralloidal, 



growth of, xxi. 413-421 figs. ; properties 



different, fr. those of calcite, xxxv. Proc. 



64. 

 Arran, I. of, rocks comp. w. those of 



Cantyre, viii. 424; pitchstone, glass, 



& other cavities in minerals of, xiv. 476 



et seqq. & pi. xviii. ; ord. of success. 



in drift-beds of, xxi. 204-213 figs., xxii. 



276 ; Carb. dolerites in, xxx. 562 ; 



composite dykes in, xlix. 536-565 figs. 



& pi. xix. 



Arraumore I. (Donegal), granite, chem. 



anal, of, xviii. 408, 409. 

 Arrears of contributions, xxvi. p. xxvi. 

 Arsenic, *gen. distrib. of, iii. (Part 2) 



26-28. 

 Arsenious *acid, vii. (Part 2) 1. 

 Artemis cordata, sp. nov., vi. 177 & 



pi. xxi. 



elegantula, sp. nov., vi. 177 & 



pi. xiv. 



elliptica, sp. nov., iii. 417 & 



pi. xv. 



■ inelegans, sp. nov., vi. 177 & 



pi. xx. 

 Artesian wells, in & round London, xii. 



6, xxviii. p. lvii; at St. Petersburg, 



xx. 444 ; in Paris, xxviii. p. lix ; at 



Meux's brewery, section descr., xxxiv. 



902-913 ; palaeont. & phys. condit. 



of deposits ibid., xxxiv. 914-921 ; 



boring for, nr. Windsor Forest, 1. 152, 



496. 

 Artlirophycus fr. Gold Coast, xlix. Proc. 



146. 

 Arthropleura, see ~Eurypterus, xviii. 



347. 

 Arthrostigma gracile comp. w. Psilo- 



pliyton princeps, xxxiii. 218. 

 Arthur, Lake (N.Z.), xxii. 256. 

 Arthur's Seat (Midlothian), Carb. dolerites 



of, xxx. 553 ; struct. & age of, xxxi. 



131-148 figs. 

 Arthursleigh (N.S.W.), i. 343, 344. 

 Artificial format, of minerals, iv. pp. cxv- 



cxviii ; art. crystals, struct, of, xiv. 



454 ; metamorphism, xxxvi. Proc. 



81. 

 Artiodactjda, char, of, iv. 131 et seqq. ; 



remains in Wookey Hole, xix. 271. 

 Aetts, E. T., obituary of, v. p. xxii. 

 Artisia, ii. 135, 138; in Nova Scotian 



Coal Measures, x. 36, 38 figs. 

 Artois, axis of, xii. 59. 

 Artush Beds (Kashgar), xxx. 575. 

 Araba (W. I.), phosphatized coral fr., 



xii. 80, 81 w. chem. anal. 

 Aran River (Sussex), superf. geol. of 



basin, xliii. 637 ; section across Aran 



& Adur watershed, facg. xliii. 656. 

 Arundel (Sussex), raised beach nr., xv. 



216. 

 Arvicola Gulielmi, sp. nov., xxvi. 125, 



130 & pi. viii. 



ratticeps, xxvi. 124-125, 130 & 



pi. viii. 



sp., in Pleistoc. fissure-dep. nr. 



Bristol, xxxvii. 69. 



Arvonian in Pembrokeshire, xxxv. 285- 

 294 w. map & section ; in Caernarvon 

 & Anglesey, xxxv. 295-308 w. map ; 

 char, of group, xxxvii. Proc. 56; so- 

 called, of St. David's, xxxix. 280; 

 no evid. of, ibid., xlvi. 263 ; age, char., 

 & new areas of, xl. 515. 



Arzo (Lombardy), *foss. fr., vi. (Part 2) 

 58. 



Asaphellus, subgen. nov., xxxiii. 664. 



