of Somersetshire and South Wales,
557-566; measurements of the teeth
of Rhinoceros leptorhinus, 234; spe-
cies common to the Carboniferous
and Devonian formations, 674; oc-
curring in the Lower Devonian rocks
of North Devon, and those found in
the same group on the Rhine, in
Belgium, and in France, 636; Lower,
Middle, and Upper Devonian series
of North Devon and Petherwin (in
North Cornwall), showing those spe-
cies that pass into the Carboniferous
in any area, 669; Middle Devonian
rocks of South Devon compared with
those of North Devon and Europe,
and with the Carboniferous gene-
rally, 643; the distribution of In-
fralias Corals, 22; species in the
Middle Devonian or Ilfracombe
group in North Devon and West
Somerset, 640; throughout the va-
rious fossiliferous groups in North
Devon, 375-380; fossils of the zone
of Ammonites planorbis, 301; Be-
lemnites acutus, 304; showing the
entire fauna and flora of the Old
Red Sandstone and Devonian rocks
of Great Britain, and their compari-
son with those of the Rhenish-Prus-
sian, Belgian, and French series,
616-634; groupings of the Palæo-
zoic rocks of North Devon and their
equivalents in South Devon, Corn-
wall, South Wales, Scotland, South
Ireland, and the three European
areas, 698; present census of species
in the Paleozoic rocks of Great
Britain, 615; relation of the Mam-
mals of the Lower Brick-earths to
the Præglacial and Postglacial fauna,
107; species common to the Middle
Devonian rocks of North Devon,
South Devon, and West Somerset,
650.

Tate, R., Esq., on some Secondary

Fossils from South Africa, 139; on
the fossiliferous development of the
Zone of Ammonites angulatus,
Schloth., in Great Britain, 305; on
the Lower Lias of the North-east of
Ireland, 297.

Tealby series of Lincolnshire, 244.
Teign, Mr. G. Wareing Ormerod on

the geology of the upper part of the
valley of the, 185, 418.

Telerpeton Elginense, Prof. T. H. Hux-
ley on a new specimen of, 77.
Terrestrial fossils from Charter House,
493.

Tertiaries, Mr. G. Maw on the sources
of the materials composing the white
clays of the Lower, 387.
Tetford Hill, Lincolnshire, section of
a chalk-pit at, 240.

Thames, Glacial and Postglacial depo-
sits of the valley of the, 396.
Thames gravel, sections showing the
position and relations of the, 409;
valley, Mr. W. Boyd Dawkins on the
Lower Brick-earths of the, 91.
Thetford, Norfolk, flint implements
from, 45.

Thickness of Secondary beds within
and beyond the Somersetshire coal-
basin, 477.

Thomson, J., Esq., and Dr. P. M. Dun-
can on Cyclophyllum, a new genus
of the Cyathophyllidæ, with remarks
on the genus Aulophyllum, 327.
Thornton, E., Esq., on the existence of
a large coal-field in the Province of
St. Catherine's, Brazil, 386.
Timins, Rev. J. H., on the chemical
geology of the Malvern Hills, 352.
Tin-grounds of the valley of the Teign,
419.

Tracks of Pteraspis?, 333.
Trap-rocks, analyses of intrusive, 364;
from the Herefordshire Beacon,
analyses of bedded, 358.

Trias of the Mendip Hills, 457.
Trigonia Cassiope, 158.

Goldfussi, 159.

vau, 159.

ventricosa, 159.

Trilobites from the Devonian rocks,
648, 666.

Trochotoma Brocastellensis, 552.
Lycettii, 552.

Trochus apicalis, 553.

Deslongchampsii, 553.
Eliza, 554.

gradatus, 553.
Holwellensis, 554.
Langanensis, 553.
latilabrus?, 554.

Trowse Junction, Norfolk, section at,
88.

Tudor, Canada West, specimen of
Eozoon from, 257.
Turbo Brocastellensis, 555.

Burtoni, 314.
nodulo-carinatus, 555.
reticulatus, 556.
solidus, 554.
Stowianus, 153.
tumidus, 556.

Turritella Howsei, 556.
Rubidgeana, 152.

Uitenhage series, South Africa, fossils
from the, 144; List of the fossils of
the, 169.

Unconformity at the base of the Hun-
stanton Limestone, 242.

Uphall Pit, Ilford, section at, 92.
Upheaval of the Mendip Hills, date of
the, 453.

Upper Lias of Somersetshire, 474.
Ursus ferox, relation of U. priscus to,
342.

Valley of the Little Ouse, map of the,
46; section across the, 46; Teign,
geology of the upper part of the,
185, 418; Thames, Glacial and Post-
glacial deposits of the, 396.
Vallis, sections in the, 488.
Valvata anomala, 556.

Pygmæa, 557.

Variegated strata, analyses of, 114.
Veins, analyses of felspathic, 362.
Vennor, H. G., Esq., on a section of
Laurentian rocks in the county of
Hastings, Canada West, 256.
Vertical section of the Lias-conglome-
rate as exposed on the Glamorgan-
shire coast, 202.
Vertigo Murchisone, 557.
Volcanic ash, analyses of, 353.
Warwickshire, the Rev. P. B. Brodie
on the Drift in a part of, 208; zone
of Ammonites angulatus in, 306.
Waterloo, Larne, section at, 298.
Welton-le-Marsh, section at, 230.
Wentworth and Long Lake, Canada,

specimens of Eozoon from, 260.
West Challacombe, 604.
Weston, Bath, fossils from, 497.
Whatley, Lias at, 476.

Wheddon Cross, section in a quarry
at, 587.

Wheelwright, W., Esq., on the Dis-

covery of Coal on the Eastern Slope
of the Andes (Abstract), 197.
Whitaker, W., Esq., on Subaërial De-
nudation, and on Cliffs and Escarp-
ments of the Chalk and Tertiary
Strata (Abstract), 265.
White Lias at Broadfield Down, 504;
of Somersetshire, 459; clays of the
Lower Tertiaries, 387.

Whitfield, section from Clayhanger to,

593.

Wickham, brick-earth at, 98.
Williamson, Prof. W. C., on a Cheiro-
therian footprint from the base of
the Keuper Sandstone of Daresbury,
Cheshire, 56.

Willingham House to Binbrook, Lin-
colnshire, section from, 243.
Willsbridge, section at, 498.

Wills Neck to Cannington Park, section
from, 584.

Wiltshire, estuarine sands in, 197.
Windsor Hill, fossils from, 509; section
at, 508.

Withycombe by Dunster, 593.
Wiveliscombe, 591; sections of curved
laminæ near, 324.

Wolds of Lincolnshire, 227.
Wollaston Donation-fund, award of the,

xxviii; Medal, award of the, xxvii.
Woodabay, section at, 599.
Wood, S. V., jun., Esq., on a section

at Litcham affording evidence of
land-glaciation during the earlier
part of the Glacial Period in Eng-
land, 84; on the structure of the
Postglacial deposits of the South-
east of England, 394.

Woodward, H., Esq., on some points
in the structure of the Xiphosura,
having reference to their relationship
with the Eurypterida, 28.

Wyley, Mr., on the nomenclature of
the South African rocks, 172.
Xiphosura, Mr. Henry Woodward on
the structure of the, 28.
Yard, 594.

Yare valley above and below Norwich,
sections across the, 89.
Zebbug bone-cave, 287; plan of the, 289.
Zellania obesa, 540.

Zone of Ammonites angulatus in Great
Britain, Mr. R. Tate on the, 305;
in Ireland, 302, 306; Bucklandi,
303, 497, 531; planorbis, 299, 467;
Belemnites acutus, 304.

Zones of zoological life, value of, 510.
Zonites (Conulus) priscus, 330.
Zwartkop River, South Africa, 149;
Jurassic fossils from, 150.