96 
INDEX. 
Jobert, M.,'on the different ages of Au- 
vergne alluviums, 267 
J orullo, time for which the lava of, re- 
tained its heat, 363 
Jura, erratic blocks of the, 148 
Kaiserstuhl, volcanic hills in the plains of 
the Rhine, 152 
— covered nearly to their summits with 
loess, 152 
Katavothrons of the plain of Tripolitza now 
filling up with osseous breccias, 144 
Kater, Capt., on recent deposits near 
Ramsgate, 182 
Keferstein, M., his objections to M. de 
Beaumont's theory, 347 
Kingselere, valley of, ground plan of the 
— see wood-cut No. 78, 305 
— — section across the, from North to 
South — see wood-cut No. 79, 305 
■ section of the, with the heights on a 
true scale — see wood-cut No. 80, 306 
anticlinal axis of the, 306 
proofs of denudation in the, 307 
Killas of Cornwall, 370 
Laach, lake-crater of, 197 
Lacustrine deposits overlying the crag — 
see diagram No. 30, 173 
Lake Aidat, formed by the damming up of 
a river by lava, 269 
Lake-craters of the Eifel — see wood-cuts 
Nos. 49 and 50, 195, 196 
— — how formed, 196 
Lakes, arrangement of deposits in, 8 
Lake Superior, recent deposits in, analo- 
gous to those of the Eocene lakes in 
Auvergne, 230 
nature of the recent deposits in, 334 
— the bursting of its barrier would cause 
an extensive deluge, 270 
Lamarck, his list of the fossil shells of the 
Paris basin, 156 
La Motta, valleys excavated through blue 
marl capped with columnar basalt at, 77 
' volcanic conglomerate of — see dia- 
gram No. 13, 77 
relative age of the basalts of, 82 
Lancashire, tertiary strata of, 135 
Land, elevation of, caused by subterranean 
lava, 105 
Land-shells drifted from the Alps into the 
Mediterranean, 48 
Landers, on the delta of the Niger, 330 
Landes, tertiary strata of the, 206 
La Roche, section of the hill of, 229 
Las Planas, lava current of, 189 
LaTrinita, near Nice, fossil shells of, 168 
Lauder, Sir T. D., on the parallel roads of 
Glen Roy, 131 
Lava, a bed of oysters between two cur- 
rents of, at Vizzini, 73 
Lava, columnar, stratified marl resting on, 
in the Isle of Cyclops — see wood-cut 
No. 14, 79 
minerals in cavities of, 81 
— veins of, on Etna, 91 
great length of time which it requires 
to cool, 363 
Lava streams solid externally while in mo- 
tion, 86 
Lavas of the Cyclopian isles not currents 
from Etna, 81 
Lavas and breccias of the Val del Bove, 93 
Lavas excavated by rivers in Catalonia, 
186, 189 
Lavas and alluviums of different ages in 
Auvergne — see wood-cut No. 61, 266 
La Vissiere, fresh-water limestone covered 
by volcanic rocks at, 263 
> faults in the limestone at, 263 
Leeward Islands, geology of the, 132 
Le Grand d'Aussi, M., on alluviums under 
lava in Auvergne, 267 
Leith Hill, height of, 293 
Lentini, volcanic pebbles covered with 
serpulse in the limestone near, 73 
— dip of the strata at, 74 
valleys near, their origin, 111 
Leonhard, M., on the loess of the valley of 
the Rhine, 151 
on the volcanic district of the Lower 
Rhine, 201 
on granites of different ages near 
Heidelberg, 357 % 
Lewes, fissures in the chalk filled with 
sand near, 283 
■ view of the ravine called the Coomb 
near — see wood-cut No. 75, 301 
■ fault in the cliff-hills near — see wood- 
cut No. 76, 301 
Leybros, fresh-water limestone of, 237 
Lias, strata of the, 326 
strata hetween the ^Carboniferous 
group and the, 326 
converted into flinty slate by trap 
dike in Antrim, 370 
• altered in the Alps, 372 
— altered in Hebrides, 378 
Licodia, relative age of the basalts of, 82 
Lignite interstratified with the sub-Apen- 
nine marls, 159 
Lima, valley of, proofs of the successive 
rise of the, 130 
Limagne d'Auvergne, lacustrine deposits 
and volcanic rocks of the— see map, 
wood-cut No. 56, 226 
Limestone formation of the Val di Noto 
described — see diagram No. 5, 64 
— — - its organic remains, 65 
Limestone, resting on lava at Capo Santa 
Croce, 68 
Lithological character of the sub-Apen- 
nine beds, 157, 162 
