Carladez. See Vic en Carladez.
Cassini's map, 52.
Catania, 65, 157 n.
"Causses" of the Cevennes, 4.
Central France. See France, Central.
Cèr (or Cère), the, 25, 146, 148, 151, 152.
Cevennes, elevation of the rocks in the
region of the, 2; defensive advantages of
the district to the Protestants persecuted
by Louis XIV., 4, 5,
Cezallier, Montagnes de, 139.
Chadrat, 10.
Chaise Dieu, la, 26, 154, 157.
Chalar (or Chalard), Puy de, 80, 81, 94.
Châlons sur Saône, central position of, 1.
Chalucet, 23, 49, 198; composition of its
basalt, 98.
Chamablanc, 132.
Chamalières, 26, 179.
Chambeyrac, 178.
Chambon, 114, 124, 133, 134, 135, 140,
141.
Chesnut-trees, volcanic soil most favour-
able to the growth of, 190.
Chidrac, 135.
Chiliac, 184.
Chimborazo, 69.
Chopine, Puy, 46, 71; a perplexing enigma
to the geologist, 72; the author's deduc-
tions regarding it, 73-75; origin of its
elevation, 75; its height, 232.
Chuquet Geneto, 87; explanation of the
term " Chuquet," ib. n.
Civita Vecchia, 120.
Clermont, 20, 21, 22, 23, 31, 33, 34, 40,
67, 85, 86, 98, 132, 211.
Clermont and Chanturgue, Côtes de, once
evidently united, though now separated,
Clermont Ferrand, 39.
Clersat, 66.
Cliergue, Le, 128, 132,
Cliersou, Puy de, situation and peculiar
shape of the, 66; its caves perforated by
the Romans, ib.; M. Ramond's hypothesis
relative to this puy, 67; its height, 232.
Clinkstone of Mont Mezen, See Mont
Mezen.
Coal-measures, strata associated with the, 3;
localities of the principal coalfields, 4.
Coiron, volcanic region of the, 161, 162;
fanciful appellation bestowed by the
peasantry on its basaltic phenomena, 163,
164; basaltic rock of Rochemaure, 164;
instructive features connected with the
basaltic currents of this region, 165, 166.
Col de Cabre, 149; its height, 232.
Colière, Puy de, not noticed by previous
writers, 86; characteristics of its basaltic
products, 86, 87.
Combegrasse, Puy de, 94.
Côme, Puy de, regularity of the conical
form of, 55, 56; prodigious dimensions
of its lava-current and phenomena con-
nected therewith, 56-61; its height,
232. See also 66, 79, 89.
Compains, Valley of, 143.
"Cones of eruption," 41 n. †.
Conglomerates of Mont Dore, see Mont
Dore; tendency of conglomerates to waste
into pyramidal form, 172 n.
Coquille, Puy de la, 77.
Coran, Chox de, dimensions of the crater,
and composition of the strata of the, 111.
Coran, Puy de, 13; circumstances which
entitle it to attention, 111, 112.
Cordier, M., 35, 232.
Cordilleras, the, 134 n.
Corneille, Rocher, 172, 175, 181.
Cornon, Puy de, once the bed of the Allier,
112.
Dallet, Puy de, 12, 15, 17, 112, 200; its
height, 233.
Daubeny, Dr., 35, 37.
D'Aubuisson, M., 34, 51, 65, 72, 122 n.
Davayat, 12.
Decize (Nièvre), 4, 211.
Denise, Montagne de, 180, 181, 182, 183.
Dent du Marais, 135.
Desmarest, M., 31, 32, 33, 47, 52 n.
Dienne, 149.
Diluvian theory, remarks on the intenabi-
lity of the, 204, 207 n.
Dogne, the, 116, 125. See Dore and Dogne.
Dolomieu, M., references to the opinions of,
32, 48.
Dôme, Monts. See Puys, chain of.
Dôme, Petit Puy de. See Puy, Petit.
Dôme, Puy de, elevation, &c., of the, 45;
composed entirely of domite, 45-47 (see
Domite); its measurement, &c., 52, 53,
232; mode of its production not indicated
by its structure, 54. See also pp. 3, 4, 39,
41, 48, 49, 50, 51, 66, 68, 69, 78, 86,
87, 89, 129, 155, 232.
Domite, a variety of trachyte, why so called,
45; its characteristics, 46; its extreme
liability to decomposition and volcanic
nature, 47; hypotheses of various natu-
ralists on the subject, 47-49; odour
given out by it when rubbed, 53; M. le
Coq's hypothesis relative to the domitic
Dordogne, 4, 5, 114, 126, 127, 132, 134 n.,
135, 137, 139, 140, 146, 149.
Dordogne, Lot, and Aveyron, character of the
lias underlying the oolite in the depart-
ments of, 5.
Dore, Mont. See Mont Dore.
Dore, the, 112, 116.
Dore and Dogne rivers, point of union of
the, 116, 124, 128.
Douc, Montagne de, 168, 171, 174.
Drachenfels, 130.
Drôme, 1.
Durbise, la, 128.
Durtol, 64, 104.
Egravats, Ravin de, 131 n.
Eiffel, 78, 81.
Emblavès, 26, 178, 179.
Enfer, Puy and Vallee de l', 94, 126.
Entraigues, 194.
Escobar, M., 116 n.
Escoutay, 165.
Espinasse, la Narse d', 94.
Etang de Fung, 59.
Etang, 1', 83.
Eternity. See Time.
Etna. See Etna.
Euganean Hills, 130.
Expailly, 171, 181, 182 n.
Eysenac, Montagne d', 180.
Falgoux, 147.
Faujas de St. Fond, M., 31, 32, 165, 187,
192, 245.
Fauna of Central France. See Organic
remains.
Fay, 179.
Fay-le-Froid, 167.
Ferrand, Puy, 124, 125, 133.
Ferrara, M., 116 n.
Filhou, Puy de, 61.
Fontanat, 86.
Fontaulier, the, 185, 187.
Font de l'Arbre, 86.
Fontfredde, 89, 90, 91.
Fontmore, 64.
Forèz, the, 1, 2, 7, 28, 210. See Auvergne
and Forèz.
Fortresses, ruined, on the peaks of the
Auvergne, and ultimate fate of their
occupants, 102 n.
Fossils and organic remains of the Haute
Loire, 229, 230. See Organic remains.
Fraisse, Puy de la, 66, 67, 70.
France, Central, division line of, 1; geolo-
gical features of the country on either
side of this line, 1-5; theory of the
French geologists relative to the pro-
duction of its volcanic rocks, 200; table
of heights of the volcanic districts, 232.
Freshwater lakes of the tertiary period,
proofs of the former existence of, 2, 6;
probable cause of their drainage, 6; their
boundaries easily recognisable, ib.; lakes
of La Caissière and d'Aidat, 92; peculiar
features and probable origin of Lakes
Pavin and Mont Sineire, 143, 144; ques-
tion of the original level of the lake-
basins of Central France, 210-213. See
Cantal, Haute Loire, Limagne d'Auvergne,
Menat, Montbrison.
Gannat, 10, 12.
Gard, 3, 4.
Garges, 4.
Geology of Central France in the regions
of the Auvergne, Forèz, Gevaudan,
Vivarais, and the Valley of the Rhone,
1, 2; freshwater deposits of the ter-
tiary period, 2; crystallizations in the
granite, ib.; metals and their localities,
2, 3; purity of the kaolin of Limoges,
3; absence of the Cambrian, Silurian,
and Devonian series of strata, 3; coal-
measures and their localities, 3, 4; extent
of limestone strata of the lias and oolite
group, 4; aspect of the "causses in
the region of the Cevennes, 4, 5; lesson
taught by geology relative to the im-
mensity of the world's epochs, 208, 209
and n.; Sir Charles Lyell's summary of
the geological characteristics of Central
France, 213, 214. See Organic remains,
Volcanic formations, Volcanic remains,
Volcanic rocks.
Gerbier des Jones, 157.
Gerbison, 179.
Gergovia, 12, 15; volcanic constituents of
the mountain of, 17, 18, 200, 203; geo-
logical and antiquarian interest attaching
to it, 106 and n. t; difference between
its basalt and that of La Serre, 204. See
Girou.
Gevaudan and Vivarais, surface elevation
attained in the region of the, 1.
Gimeaux, 23.
Gironde, 1.
Girou, Puy, 12; this puy and Puys de
Jussat and Gergovia originally a single
plateau, 106; character of the stratifi-
cation of the region, 107; line of contact
between the basalt and the limestone
well defined, 108; its altitude compared
with that of adjacent puys, 109; its
height, 233.
Godivel, La, 144.
Goul, the, 146.
Goules, Puy des, 67, 69, 70; its height, 233.
Gour de Tazana. See Tazana.
Gouette, Puy de la, 71, 72, 73, 75.
Grange, Pan de la, 125.
Grange, Puy de la, 132.
Granite rocks of Central France, varying
character of the, 2.
Graveneire, Puy, 44, 83, 99n., 100; its
puzzolana in much request, 84; non-
existence of a crater, ib. and n.; cha-
racter of its lava rock, 85; its gaseous
springs, ib.; industrious cultivation of
the district, 86; its height, 233.
Gravouse, Puy de la, 91, 92.
Gresinier, 64, 105.
Griou, Puy, 148.
Gromanaux, Puy de, 87.
Gros, Puy, 136, 137; its height, 232.
Grotta del Cane, French springs analogous
to the, 85, 193.
Guery, Lake, 137.
Guettard, M., an early observer of the vol-
canic phenomena of Central France, 30;
small credit given to his memoir thereon,
Hamilton, Sir W., on the lava-current of
Etna, 117 n.
Hamilton and Strickland, Messrs., on the
volcanos of Asia Minor, 210 n.
Hautechaux, Puy de, 133.
Haute Loire, freshwater formation of the
basin of the, 25; extent and depth of the
superimposed volcanic rocks, ib.; limits
of the original basin, outlets of the
Loire, 26; constituents of the lower
series of lacustrine beds, 26, 27; extent
and variety of their organic remains, 27;
possible cause of the drainage of the lake,
ib.; points of resemblance between the
rocks of this district and the peperino of
the Auvergne lake basin, 28; probable
cause of the accumulation of the water
into a lake, 179.
VOLCANIC REGION of the HAUTE
LOIRE and ARDÈCHE (ci-devant pro-
vinces of the Velay and Vivarais),
154; natural boundary of this district
and the Cantal, 155; its calcareous
formation entirely cased in granitic rock,
198; region of Mont Mezen and its
dependencies, see Mont Mezen. Volcanic
phenomena of the Coiron, see Coiron.
Region of the Velay and Vivarais, see
Velay. See also 200, 206, 210.
Hautes Alpes, 1.
Herault, 4.
Herculaneum and Pompeia, 30.
Human bones, discovery of, in the breccia
of the Montagne de Denise, 181, 182;
results of a scientific discussion of the
subject, 183; inferences deducible from
the discovery, ib.
Humboldt, 51, 122, n.
Iceland, resemblance of the Mont Baula in,
to the Puy de Dôme, 50 n.; enormous
extent of the lava-current of a volcano
in, 117 n.; bursting of trachytic domes
and currents through basaltic beds in,
201 n.t
Incrusting springs, natural bridges formed
or forming by, 22; localities of similar
springs, 23; different character of their
sources, ib.
Infau, Puy de l', 94.
Ischia, 130.
Lakes and lake basins. See Freshwater
lakes.
Lancerote (a Canary Isle), references to
volcanic eruptions in, 95 n.*, 180 n.
Langogne, 184.
Languedoc, 186, 197.
Lantegy, Puy de, 71.
Lantriac, 173.
Laqui, 77.
Lardeyrolle, 159.
La-roche-lambert, 169.
Laschamp, Puy de, not volcanic in appear-
ance when seen from a distance, 89;
marked effects of fire observable on this
hill, 90; its height, 232.
Lavas, laws determining the propulsion of,
49-51; rock of prismatic lava near Pont
Gibaud, 61; great extent of various lava-
currents, 117 notes; typical character of
the various lava, 130 n.
Laveille, 135.
Lavoulte (Ardèche), 4.
Layssac (Aveyron), 4.
Le Coq, M., 35, 70 n., 87 n.
Le Crest, village of, 102, 104.
Le Grand d'Aussy's
vergne,' 33.
Leironne, Puy de, 71.
Lempde, 4, 154.
Le Puy. See Puy, Le.
Le Vernets, 2.
Limandre, Lake de, 185.
LIMAGNE D'AUVERGNE, 2, 24, 25, 27, 38,
39, 64, 82, 112, 134, 198, 200, 202, 205,
210, 211, 212, 213; extent and charac-
teristics of its lacustrine formation, 7, 8;
principal divisions of the lacustrine series,
the sandstones and conglomerates, and
M. Brongniart's opinion thereon, 8; the
author's deductions on the same subject,
ib.; identity of the marls and sandstone
with the secondary new red sandstone and
marl of England, 9; character of the
green and white foliated marls, 9, 10; re-
markable extent covered by the indusiæ
of the Phryganea (or caddis-fly), 11, 12;
localities where they are best developed,
12; probable cause of their aggregation,
ib.; components of the calcareous marls,
13; M. Pomel's deductions relative
thereto, 13, 14; coincidence of Sir Charles
Lyell's opinion therewith, 14; calcareo-
volcanic strata of the district, 15-17;
calcareous peperino, 18-21; calcariferous
and incrusting springs and their localities,
21-23.
LIMAGNE and MONTS DOME, VOLCANIC
REGION of the, its extent and elevation,
40; its components and external charac-
teristics, 41, 42; aspect of the lava-
fields, 43; epochs of the formation of the
chain of puys, see Puys, chain of.
Lime, limestone, carbonate of lime, pro-
ducing causes of, in the regions described
in this work, 198, 199.
Limoges, 3, 67.
Loire, the, 1, 2, 3, 4, 7, 25, 26, 27, 28,
157, 167, 171, 175, 176, 177, 178, 179,
207, 211.
Loire, Upper. See Haute Loire.
Lot, 3, 5, 146.
Louchadière, Puy de, 56, 58; its majestic
proportions, 78; appellation suggested by
its crater, 79; its height, 233.
Loueire, Puy de, 136.
Louis XIV., 5, 102 n.
L'Oulette, 178.
Lozère, 3, 4, 154 n.; height of Mont Lo-
zère, 232.
Lyell, Sir Charles, references to the
writings of, 9, 12, 14, 15 n., 27, 35,
96 n., 116 n., 122 n., 135 n., 199, 217,
223, 225, 226; his summary of the
geological characteristics of Central
France, 213, 214.
Lyonnais, 28.
Lyons, 150.
Menat, tripoli basin of, 28; result of exca-
vations in its sedimentary beds, 29;
origin of its tripoli, ib.
Meye, Puy de la, or Puy Noir, 90, 91, 103.
Mezen, 38, 49, 125 n., 175, 177, 180, 194.
See Mont Mezen.
Mianne, 161 n.
Miaune, 179.
Millefleur, Puy de, 13.
Modena, 122.
Monges, the, 59.
Monistrol, 184.
Mont, Montagne de, 180.
Montaigu, 28.
Montaudou (or Montaudoux), Puy de, 84,
99; its composition, 99 n.
Montbrison, 2; extent and character of its
basin, 28; its calcareous formation, 198;
original limits of its lake basin, 210.
Montbrul, les Balmes de, an accidental ex-
cavation, 165.
Mont Chagny, 12.
Montchal, Puy de, 92, 143.
Montchar, Puy, 89; its height, 232.
Montchie, Puy de, 42, 88.
Mont Crousteix, 171.
Mont Dore, 33, 34, 38, 47, 48, 49,
50, 67, 70 n., 78, 82, 89, 95, 110,
146, 147, 148, 149, 152, 155, 156,
160, 167, 199, 201, 209, 211. RE-
GION OF MONT DORE. I. GENERAL
OUTLINE: its figure, 114; its ancient
appellation, ib. n.; points of similarity
between it and other insulated volcanic
mountains, 115; circumstances which
would reduce Etna to the condition of
Mont Dore, 116 n; relative positions of
its basaltic and trachytic products, 116,
117; their occasional approaches to
similarity of appearance, 118; extent,
condition, and character of its conglome-
rates, 118-121; facts tending to prove
the co-agency of water in the formation
of these conglomerates, 121, 122; causes
of deluges during volcanic eruptions,
122; effects naturally producible there-
by, 123, 124; large annual fall and
long continuance of snow on Mont Dore,
123 n.
II. ITS STRUCTURE: heights of
Pic de Sancy and Puy Ferrand, and
prospect therefrom, 124; nature of the
rock composing the mountain platforms,
125; sulphur and alum deposits beneath
the Cascade of the Dore, ib.; rich pastur-
ages of the high-lands, marked contrast
between the valleys and the heights, 125
n.; les vallées de l'Enfer and de la
Cour, and their stratification, 126; local-
ity of the principal vent (central crater),
|