874 
Paleozoic Polyzoa, Mr. Vine and Mr. 
Shrubsole on a suggested classifica- 
tion of, 329. 
rocks beneath Northampton, Mr. 
Eunson on the range of the, 482. 
, Oldest, of Anglesey, age 
of the, 579. 
Parker, Dr. G. W., on the geology 
and mineralogy of Madagascar, 
Proe. 69. 
Parkinson, Mr. C., on the Droitwich 
brine-springs and saliferous marls, 
248 
Pasceolus, 834. 
Pavotubigera dimidiata, 691. 
flabellata, 691. 
gambierensis, 692. 
Peake Hill, section through, 258. 
Pease Marsh, section through, 612. 
Pebidian rocks, evidence of age of, 
518; origin and petrological cha- 
racters of, 519. 
Pembrokeshire, Mr. Davies on the 
microscopic structure of some rocks 
from, 548. 
, Dr. Hicks on the Pre-Cambrian 
rocks of, 507. 
, Mr. T. Roberts on a new spe- 
cies of Conoceras from the Llanvirn 
beds of Abereiddy, 636. 
, new areas of Dimetian rocks in, 
012; new areas of Arvyonian rocks 
in, 516. 
Penning, Mr. W. H., on the high- 
level coalfields of South Africa, 
658. 
Penrith, Mr. G. V. Smith on some 
footprints of vertebrate animals in 
the Lower New Red Sandstone of, 
479. 
Beacon, section through, 479. 
Pen-y-Cyfrwy, section from Porth 
Seli to, 524. 
Pen-y-Gaer, conglomerate from, 203. 
Perlitic structure, Mr. F. Rutley on 
strain in connexion with crystalli- 
zation and the development of, 340. 
Permian, general relation of, to the 
Trias, 398. 
Peronella nana, 780. 
Petalodopsis tripartitus, 622. 
Petalodus acuminatus, 624. 
Petrology of conglomerates in Angle- 
sey and Caernarvonshire, 200; of 
some North-of-England dykes, 209 ; 
of the Guernsey rocks, 420; of some 
Japanese rocks, 431; of rocks from 
the St. David’s district, 548-558 ; 
of some Anglesey rocks, 583; of the 
rocks of the Whin Sill, 642. 
Pholidophyllum, 177. 
GENERAL INDEX. 
Physonemus hamatus, 617. 
Plagioclase basalts, Japanese, 449. 
Planorbulina farcta, 770. 
Haidingeri, 770. 
Plans (see Maps). 
Pleistocene sands observed in the new 
railway-cutting at Guildford, Lieut. 
Col. Godwin-Austen on the, 599. 
Plesiosuchus, Owen, Sir R. Owen on 
the Crocodilian genus, 153. 
Pleurodus Woodi, 624. 
Pleurotoma multistriata, 321. 
Pliocene beds, Mr. Newton on ante- 
lope remains in newer, in Britain, 
280. 
Pecilodus corrugatus, 625. 
Poikilitic? strata in the Richmond 
well-boring, 749. 
Polkerris Cove, section through, 462. 
Polyrhizodus Colei, 622. 
Polyzoa found in the boring at Rich- 
mond, Mr. Vine on, 784. 
Ponte dei Preti, section across the 
Chiusella, at the, 862. 
Porthalla, section of cliffs near, 461 ; 
section from Pencra Head to, 462. 
Cove, plan of broken ground 
near, 465. 
, Mr. Collins on the serpen- 
tine and associated rocks of, 458. 
district, map of the, 460. 
Porth-clais, plan of Allan valley at, 
532; sketch of quarry in the Allan 
valley on north side of, 5389; of 
quarry between Rhoscribed and, 
534; sketch in Allan valley at, 532; 
section to, from near Castell, Ram- 
sey Sound, 535. : 
Porth Hayog, view in, looking south, 
305. 
Porth-lisky, sketch of cliffs in Hast 
Harbour, 540; and Ramsey-Sound 
area, Pre-Cambrian rocks of, 540. 
Porth-melyn, Cambrian and Pre- 
Cambrian rocks in, 529. 
Porth-Seli, section from, to Pen-y- 
Cyfrwy, 524. | 
Porth-y-gwichiad, overfault in black 
shale on, 570. 
Portlemouth, chloritie and mica- 
schist on shore south of, 8. 
Postglacial ravines in the chalk 
wolds of Lincolnshire, Mr. A. J. 
Jukes-Browne on, 160. 
Prawle Point and adjacent coast, 5; 
section on shore east of, 6; section 
of about 13 mile of coast west of, 
8; microscopic section of chloritic 
schist from the west side of, 16. 
Pre-Cambrian rocks (the so-called 
intrusive masses), Dr. Hicks on the 
