323 



dua 



xliv. 194 ; sparsity of, in Thanet basem.- 

 bed, xliv. 755; sporadic, in Madagas- 

 ar basalt, xlv. 347, 353 fig.; size of 

 grains in residues fr. Inf. Oolite, xlvii. 

 566 ; cryst. in residue fr. Pea Grit, xlvii. 

 561 & pi. xx ; in plut. rocks of Garabal 

 district, xlviii. 110; in N.E. Forfar 

 rocks, xlix. 342 ; in Carrock Fell 

 gabbro, 1. 318; microcryst. in insol. 

 residues fr. Devon. Lirnest., xlviii. 383 

 et seqq. & pi. ix. ; inclus., in ' felspathic 

 traps ' of Devon, xlviii. 505 ; do. in 

 lava of Stromboli, 1. Proc. 2 ; perlitic 

 cracks in, 1. 367-376 figs. & pi. xviii. 



1 Quartz sillimanitise,' xlix. 338, 344, 345. 



Quartz-andesite, red, nr. St. David's, xlvi. 

 258. 



Quartz-augite-andesites fr. Japan, xl. 448. 



Quartz-boulders in Southern Drift, xlviii. 

 34. 



Quartz - conglomerate (Lr. Cambr.) of 

 St. David's, xxxix. 305. 



Quartz-diorites of Upata, xxxv. 584, 589 ; 

 of Kamagawa, xl. 454 ; of Western Is., 

 xlvi. 361, 365. 



Quartz-felsites of St. John's Vale, xxxi. 

 584 & pi. xxx., xxxii. 12, 18 w. map & 

 pi. ii (microsc. sections) ; of Crag 

 Bridge, xxxii. 14, 18 ; of Bryn nr. 

 Treglemais, xxxv. 290, 294; in Caer- 

 narvon, xxxv. 296, 305 et seqq. ; & 

 assoc. rocks ibid., xxxv. 309-320 & 

 pi. xiii (microsc. sections) ; rocks betw. 

 Cambr. & same, xxxix. 478-486 w. cbem. 

 anal. ; of Dinorwig Series, xxxv. 686 ; nr. 

 St. David's, xl. 544, 551, 552 ; or eurite 

 of Cader Idris, xlv. 433, 435 w. chem. 

 anal.; highly silic, in Shetland, xxxv. 

 787 ; dykes in Bohemia, xxxvi. 598 ; in 

 Arran, xlix. 541 et seqq. ; fragments, 

 re-fused by basalt, xlix. 177. 



1 Quartz-felspar,' in Malvern schists, xlix. 

 407 et seqq. 



Quartz-felspar veins in Malvern rocks, 

 chem. anal, of, xxiii. 362. 



Quartz-gabbro-vitrophvrite (= tachylyte) 

 of Carrock Fell, xlv. 303. 



Quartz-gravels in Belgium, xxii. 247. 



Quartz-knobs in W. Anglesey, xliv. 475 ; 

 in N. Anglesej-, xliv. 508 fig., 517 et 

 seqq. 



Quartz-porphvries, *Leonhard on, viii. 

 (Part 2) 1-8; in N. Gippsland, xxxv. 

 18 et seqq. ; Lr. Cambr., of St. David's, 

 xxxix. 281, 313 ; contact-metamorpb. 

 ind. by same, xxxix. 319 ; in Essex- 

 drift, xliii. 353 ; micac, sills of, assoc. 

 w. Shap Granite, xlvii. 286, 287 et seqq. ; 

 q.-p. of Cross Fell inlier, xlvii. 519. 

 Quartz-porphyrite of Berserker Bauge, 

 xxviii. 303 "& pi. xi. ; in Pebid. of St. 

 David's, xxxiii. 236. 

 Quartz-reefs, about Loch Maree, xxxiv. 

 813 ; aurif., in Devon, of Queensland, 

 xxviii. 291 etseqq. ; in Silur. of Bathurst 

 (N.S.W.), 1. 113. 

 Quartz-rbvolite of Yellowstone Canon, etc., 

 xxxvii. 395, 396. 



Quartz-rocks of Falkland Is., ii. 269 et 

 seqq. w. sections ; at Spring Vale, iii. 

 249 ; *in Ireland, iv. p. lxxv ; aurif., in 

 X. Cornwall,*. 247-249; of MacCulloch's 

 Map of Scotland, viii. 120-126; in 

 Sutherland, xv. 366, xvi. 219, 233 

 et seqq.; ' Lr. Silur.' in N.W. & 

 Central Highlands, xvii. 180 ; worked at 

 Ardsheal. xvii. 266 ; of Scarabins, xviii. 



337 et seqq. ; in Banff, xviii. 333 et 

 seqq., xxvii. 102, 104 ; in Princes Is., xxiv, 

 53 et seqq. See also Quartzites. 



Quartz-sand, struct. & orig. of, xxxvi. 

 Proc. 47. 



Quartz-schist of Gwalchmai, xxxvii. 217, 

 233; ofBodafon Mt., xxxvii. 219,233; 

 of Rhoscolyn district, xxxvii. 227, 233 ; 

 of Holyhead Mt., xxxvii. 226, 233. 



Quartz-syenite, gneissic, of N. Hill (Mal- 

 vern), xliii. 490 & pi. xix. ; granitic, 

 ibid., xliii. 493 & pi. xx. ; do., of Swin- 

 yard's Hill, xliii. 502. 



Quartz-tourmaline rocks in Essex drift, 

 xliii. 353. 



Quartz-trachytes, Tert., of Hebrides etc., 

 xxx. 236 ; of Skomer I., xxxvii. 411 - r 

 of Cartago (Costa Rica), xxxviii. 333, 



338 ; in Essex drift, xliii. 354. 

 Quartz-veins, aurif., in Victoria, ix. 76 ; 



in W. Australia, xvii. 479 ; in Australia 

 generally, xxxiv. 434, 435 & pis. xvii.- 

 xviii. ; cuprif., nr. Malaga, xv. 589 - r 

 lateral displacem. of, in Mysore prow, 

 xliv. 640 fig.; downward atten. of, 

 ibid., xliv. 643 fig. ; double faultg. of, 

 ibid., xliv. 644 fig. ; contorted, in mica- 

 schist of Livet, xlv. 72, 101 ; fluid-cavs, 

 in, xiv. 471 & pi. xvii. ; q.-v. in tuffs 

 nr. Meldon, 1. 349. 



Quartz-wedge, its use in identif. minerals, 

 xxxvi. Proc. 52. 



Quartziferous, see Quartz Sf com/povnd 

 words. 



Quartzite-and-Shale Group, Lr., N. of 

 Johannesburg, xlviii. 420 ; in relat. to 

 underlying rocks, xlviii. 423. 



Quartzites on Cornish coast, viii. 10 ; of 

 N.W. coast of Scotland, xiii. 17-39, xv, 

 355 et seqq.; assoc. w. limest. in Skye, 

 xiv. 7 ; of Eriboll, etc., xv. 581, xvii. 85 

 et seqq. ; of S. Grampians, xix. 199 ; 

 in Venezuelan Guiana, xxv. 346; of 

 Namaqualand, xiii. 239; in Griqualand 

 West, xxx. 583 et seqq. ; term rejected, 

 in favour of ' quartz-rock,' xv. 366. 



Quartzites in drift fr. Rocky Mts., xxxi. 

 613, 616 ; ferrug., in Venezuela, xxxv, 

 584, 589 ; of Charnwood Forest, microsc. 

 struct, of, xxxiv. 200; of Shropshire, 

 xxxiv. 754-763 figs., xlvi. 414; of Wre- 

 kin chain, xxxv. 647 et seqq., 666; of 

 Lickey Hills, microsc. struct, of, xxxvii, 

 9 ; nr. Kinlochewe, xxxvi. 99 ; in Dur- 

 ness area, xxxvii. 242 ; at Inchnadamff, 

 etc., xxxvii. 243, 244 ; in relat. to Tom- 

 don Sandst. in N. Highlands, xxxviii, 

 114-118, xxxix. 146 et seqq. ; in relat, 

 to limest. ibid., xxxix. 196 et seqq.y 



