Vol. 55-] 



GENEBAL INDEX. 



787 



480-482 ; contorted phyU. in N. 

 Anglesey, 651 fig. 



Pian de Sass (S. Tyrol), 598-599. 



Picrodon, generic value discussed, 93 

 et seqq. 



Pieve area (S. Tyrol), overthrusts in, 

 587. 



Piping-down of sand, etc, into Chalk, 

 325, 326. 



Pissadoi Eavine (S. Tyrol), structur. 

 significance of, 591. 



PiTTMAN, E. F., & David, T. W. E., 

 on Palaeoz. Eadiolar, Eocks of 

 N.S.W., 16-37 fig. w. anal. & 

 pis. ii-vii (map & sects.). 



Pitzculatsch (S. Tyrol) fault-dyke, 

 567 ; exposures at, 591-592. 



Plagiacantha australis, sp. nov., 56 & 

 pi. ix. 



Plagioclase, corroded, lying in uni- 

 form felsp. subst., 436 fig. ; pre- 

 ponderance in Hauraki rhyolites, 

 466. ^ 



Plagioclinal struct, of Midsummer 

 Hill, 155. 



Plagoniscus colligatus, sp. nov., 56 & 



fig- 



— cristatus, sp. nov., c6 & fig. 



simplex, sp. nov., 56 & fig. 



C?) veUistics, sp. nov., 57 & fig. 



-— (?) sp., 57 & fig. 



Plas-coch (Anglesey), serpentine, etc. 

 of, 280, 284, 297. 



Plateau of S. Morocco, 196-198. 



Pleistocene vertcbrala fr. Ightham 

 fissure, 419 et seqq. 



Pliocene rocks in S. Morocco, 194, 

 195 ; (?) gravel at Moreton-in-the- 

 Marsh, 220; Plioc. vole, rocks of 

 New Zealand, 449, 451. 



Plon Fault (S. Tyrol), 567. 



Polishing of rocks by wind-action, i, 

 xc-xci. 



Pollard, W., & Clouqh, C. T., on 

 Spinel & Forsterite fr. Grlenelg 



'. Limest., 372-379 w. chem. anal 



Polygenic breccia of Davos district, 

 396 fig., 397. 



Porambonites intercedens var. filosa, 

 761. 



Pordoi Pass overthrust (S. Tyrol), 

 596-597 ; torsion of same at Bova 

 Alp, 599. 



Porphyrites in Atlas Mts., 207 ; (?) in 

 Anglesey, 294 ; in Loch Awe re- 

 gion, 478, 479. 



Porter, D. A., quoted, 37. 



Porth Llanlliana (Anglesey), ' quartz- 

 knob' of, 670; purple band in 

 cleaved grits & conglom. W. of, 

 673 fig. 



Porth Newydd (Anglesey), horizont. 

 faults in clifi'N. of Ordov. boundary, 

 654 fig. ; disrupted grit-courses in 

 Ordov. black shales, 656 fig., 666. 



Porth Padrig (Anglesey), Ordov. foss. 

 at, 639, 640. 



Porth y Corwgl (Anglesey), Ordov. 

 crush-conglom. in, 660-661. 



Porth yr Ebol (Anglesey), sect, in, 

 645. 



Post-Ordovician age of last period of 

 movemt. in N. Anglesey, 667. 



Pralongia (S. Tyrol), geol. of, 613- 

 623 w. maps ; Pr.-Soraruaz dia- 

 gonal fault, 585, 615 ; Pr. & 

 Castello thrust-plane, 619-620. 



Pre-Deronian age of Tyrone & Lon- 

 donderry granites, 273-275 fig. 



Pre-Llandeilo age of Green Series, 

 etc. in N. Anglesey, 650, 674. 



Pre-Silurian age of Anglesey ser- 

 pentines, 301. 



Prelongei, see Pralongia. 



Pressure, effects of, shown in Anglesey 

 rocks, 300-301 ; in knoll -limestones 

 of Craven district, etc., 331 et seqq. 



Pretender Eange (Spitsbergen), ice- 

 tunnels formed against, pi. xlvi ; 

 rock-avalanches from, 688. 



Princestown (Trinidad), Globigeriria- 

 marls, etc. of, 182-183. 



Protamia, see Amia. 



Protocidaris sp., 709-710. 



Pseudo-fossils fr. Silur. of Tipperary, 

 ii. 



Pseudostromatism in limest. of Craven 

 district, etc., 338, 341 fig. 



Pteroptis-hones fr. Mauritius, xc. 



Pumice-tufi" of Waikino, 457 & 

 pi. xxxiv (microsc. sect.). 



PwU-pillo (Anglesey), variolit. ser- 

 pentine near. 282 fig., 283, 286. 



Pyramid-pebbles, xc-xci. 



Pyrites in vole, ash betw. Ashbourne 

 & Crake Low, 233, 234. 



' Quartz vermicule ' in granite, etc. of 



Northern Jersey, 433, 438-439. 

 ' Quartz-blows ' in Hauraki district, 



461, 463. 

 ' Quartz-knobs ' in N. Anglesey, 669- 



672 fig., 678 et seqq. ; microsc. 



struct, of same, 677. 

 Quartz-porphyries in Loch Awe 



region, 478, 479 ; of Ballyvooney 



Harbour, 739. 

 Quartzites in Atlas Mts., 202, 203 ; 



granulitic, of Glenelg, etc., 374-375 ; 



q. in N. Anglesey, 669-672 fig., 678 



et seqq. ; microsc. struct, of same, 



677. 



