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sacred records; it remains with the defenders of those records to say, whether the purloined weapons shall be returned to the armory where they properly belong, and from which they may be again at any time drawn forth, for efficient use.

Theologians who were trained before geology was understood, and before it was possible to acquire, in our seminaries, an adequate knowledge of its elementary truths, are not included in these remarks, and we are happy to observe the increasing attention which is paid to the subject by most of the students in theology who come within our personal view.

These suggestions have been hazarded, with the sincere and earnest hope of doing good, especially to those who greatly neglect a subject of high interest, which it must concern them to know. But it will be no new case, should a mediator between hostile armies fail to conciliate either party, and only provoke the artillery of both; nor would it create either surprise or displeasure, should the writer of these remarks be regarded as being too geological for the theologians, as he is certainly too theological for some of the geologists. Among the latter are, however, not a few who regard moral truth with quite as high interest as physical, and who are anxious to prove, that where others discover only discord, there is a principle of harmony, which a skilful hand may draw forth, in tones delightful to every discriminating ear.

REMARK.

Supposing that there are inhabitants at the poles of the earth, how might they understand the days of the creation? to them a day of light is six months long, and a night of darkness is six months long, and the day, made up of night and day, covers a year, and it is a day too, limited by morning and evening.

Such persons, therefore, must suppose, upon the popular understanding of the days of the creation, that at least six years were employed on the work. So at the polar circles, there is, every year, one day, that is one continued vision of the sun for 24 hours, and one continued night of 24 hours; while, every where within the polar circles, the days and the nights respectively are for six months, more than 24 hours, extending even as we advance towards the poles, through the time of many of our days and nights. How are these people to understand the week of the creation, if limited to the popu lar view entertained in countries between the polar circles?

learned them in the most effectual way, not only in the cabinet, but abroad on the face of nature, and in her deep recesses. They will then be convinced that geology is not an enemy, but an ally of revealed religion; that the subject is not to be mastered by mere criticism; that criticism must be applied to facts, as well as to words, and that there is, at most, only an apparent incongruity-an incongruity which vanishes before investigation.

The mode in which the subject is now treated, or neglected, by many theologians and critics, (not by all, for there are honorable exceptions,) is not safe, as regards its bearing on the minds of youth. If they go forth into the world in the stiffness of the letter, and without the knowledge or proper application of the facts, it is impossible that they should sustain themselves against those who, with great knowledge, and no reverence, may too powerfully assail what they cannot defend. In the pulpit, however, geology can be but very imperfectly explained, even by him who understands it; for it is impossible that he should there, intelligibly and adequately exhibit his proofs; they rest on a multitude of facts unknown to a common audience; and they are too dependent on specimens, sections and other graphical illustrations, to be understood in such circumstances, especially by those who have enjoyed no mental preparation in kindred sciences, and in courses of inductive reasoning. As the subject has no other connexion with our faith as Christians, than so far as it affects the credibility of the early scripture history, it is therefore wise, as to the literal sense of the days, not to disturb the early and habitual impressions of the common people, or even of the enlightened, who are ignorant of geology. Any discussions before such audiences, and in such circumstances, will be misunderstood, or not understood at all, and will only prejudice the reputation of the speaker, without benefitting the hearer.

This, however, does not excuse the theologian from being fully prepared to meet the subject, in other places, and in situations, where it will be forced upon his attention. It is a part of the panoply of truth, in which he should be fully clad, although he may rarely draw his bow, and perhaps never let fly an arrow from his appropriate watch tower.

As the case now stands, with respect to most theologians in this country, the geological arguments in support of the Mosaic history, although powerful and convincing, are unknown and neglected, or they are avoided; and of course they can be, and they actually are, by some few geologists, turned, with too much success, against the

sacred records; it remains with the defenders of those records to say, whether the purloined weapons shall be returned to the armory where they properly belong, and from which they may be again at any time drawn forth, for efficient use.

Theologians who were trained before geology was understood, and before it was possible to acquire, in our seminaries, an adequate knowledge of its elementary truths, are not included in these remarks, and we are happy to observe the increasing attention which is paid to the subject by most of the students in theology who come within our personal view.

These suggestions have been hazarded, with the sincere and earnest hope of doing good, especially to those who greatly neglect a subject of high interest, which it must concern them to know. But it will be no new case, should a mediator between hostile armies fail to conciliate either party, and only provoke the artillery of both; nor would it create either surprise or displeasure, should the writer of these remarks be regarded as being too geological for the theologians, as he is certainly too theological for some of the geologists. Among the latter are, however, not a few who regard moral truth with quite as high interest as physical, and who are anxious to prove, that where others discover only discord, there is a principle of harmony, which a skilful hand may draw forth, in tones delightful to every discriminating ear.

REMARK.

Supposing that there are inhabitants at the poles of the earth, how might they understand the days of the creation? to them a day of light is six months long, and a night of darkness is six months long, and the day, made up of night and day, covers a year, and it is a day too, limited by morning and evening.

Such persons, therefore, must suppose, upon the popular understanding of the days of the creation, that at least six years were employed on the work. So at the polar circles, there is, every year, one day, that is one continued vision of the sun for 24 hours, and one continued night of 24 hours; while, every where within the polar circles, the days and the nights respectively are for six months, more than 24 hours, extending even as we advance towards the poles, through the time of many of our days and nights. How are these people to understand the week of the creation, if limited to the popuJar view entertained in countries between the polar circles?

INDEX.

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Ages, relative, of rocks and strata, 47,
53; how to be ascertained, 237, 238;
evidence of from position and organic
remains, 238; of the falums of the
Loire, 244; of volcanoes, 281.
Age, geological, of palæotheria, of mas-
todons, of elephants, 243.
Aiguilles, or needle-shaped granitic
rocks in the Alps, 53, 59.
Aiguille de Dru, a pyramidal granitic
mountain, 4000 feet high, 59.
Alpine limestone, or calcaire alpin, 100;
errors concerning it, 154.
Alpnach, strata of, tooth of the masto-
don found there, 225; series of the
strata, 225.

coal mine, bones of large mam-
malia in it, 121.
Alluvial depositions, or, mud and sand
brought down by rivers, 313; instan-
ces of in the Yellow Sea, 321; in the
Gulf of Mexico, ib.; in the Nile, 322.
Alternation of marine and freshwater |
formations, 219.

Alumine, or pure clay, one of the rarest
substances, 32; the sapphire is crys-
tallized alumine, ib.
Alum shale, 181, 183.

America, North, great western coal field,
the largest in the known world, 368.
American sea serpent, conjectures re-
specting it, 213.

lakes, a table of, 217.
Amphibole. See Hornblende.
Amygdaloid, 130; containing kernel-
shaped cavities filled with mineral
matter of a different kind, 38, 130, 143.
Amygdaloidal basalt or wacke, 143; co-
rallite found in, ib.; alternates with
limestone, 144.

Ancient condition of England, Mr.
Mantell's description of, 196.
Andes, seat of active volcanoes, 67;
Humboldt's account of, ib.
Angle of inclination explained, 39, 43.
Anhydrous gypsum, devoid of water, 43;
occurs in beds in the Alps, ib. ; harder
than common gypsum, ib.; and see
Gypsum.

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Animal kingdom, division of by Cuvier
into radiated, articulated, molluscous,
and vertebrated, 21.

Anoplotherium, an extraordinary quad-
ruped, found in the Paris gypsum, 228.
Anthracite, a species of coal that burns
without smoke, 109, 110; of Penn-
sylvania, a variety of common coal,
123.

Anticlinal line, what, 43.
Argillaceous schistus. See Slate.
Artesian wells, borings for, general in
France and Germany, 362.
Articulated animals, 21, 22.
Asbestus occurs in the partings between
beds of serpentine, 78.
Ashby-de-la-Zouch coal field, section of,

116.

Asia Minor, tremendous earthquakes
in, about the fourth century, 253.
Astronomical causes that might increase
the ancient temperature of the globe,
359.
Atmosphere, probably denser in a former
state of the globe, 363.
Augite, 80.

Auvergne, geology of, 296; basalt of,

143.

Ava, fossil bones from, 334.

D'Avilla, M., his interesting work on
conchology, and the habits of mollus-
cous animals, 29.

B.

Bagshot Heath sand beds rest on Lon-
don clay, 232.

Bakewell, Mr. Robert, of Dishley, his
experiments on varieties of breed in
different animals, 241.
Balkstone, 92.

Basalt, one of the family of trap rocks
(Chap. IX.), composition and varie-
ties of, 130; passage of basalt into
phonolite or clinkstone, and into pitch-
stone and trap-porphyry and trachyte,
ib.; passage of basalt into a remarka-
ble porphyry at Christiania in Nor-
way, 131; basaltic dykes, 133, 134;
Cleveland basalt dyke, 135; remark-
able expansion of a basaltic dyke, 137,
and cut of, 138; imbedded basalt, 138;
protruded basalt, 139; columnar ba-
salt of the Giant's Causeway, 141;
the Isle of Egg, 142; of Iceland and
Auvergne, 143; earthy basalt or

VI.) often intermixed with mica slate | Dudley fossil. See Trilobite.
and serpentine, 74; veins of metallic
ore occur in it, ib.; the white variety
is called statuary marble, ib. ; contains
a considerable quantity of siliceous
earth, ib.; no true statuary marble in
England or Wales, 75; an imperfect
variety in Scotland, ib.

Durham and Northumberland coal
mines, probable duration of, 124; fur-
ther remarks on their duration, 370.
Dye earth, 89.

Cumea, ancient city of, founded, 1200
years before Christ, in the crater of a
volcano, 267.

Curved strata, where the strata encircle
the mountains like a mantle, 45; in-
stances of, in the Lake of Bourget,
46; the Montagne de Tuille 47.
Cuvier's classification of the animal
kingdom, 21; his remarks on com-
parative anatomy, 230.

D.

Daubeny, Dr., Chemical Professor at
Oxford, on the geology of Sicily, 144;
on the extinction of the volcanoes of
the Rhine, 274.

Density of the earth, 3; of Saturn, and
other planets, 365.
Dent d'Alençon, 316.
Denudations, 51, 352.
Deshayes, M., his attempt to establish
the relative ages of formations by or-
ganic remains, independent of super-
position, 239; objections to his sys-
tem, 241-243.

Desnoyers, M., his observations on the
human bones found in caverns, 305.
Diabase. See Greenstone.
Diableret mountains, fossil remains on
their summits, 153.

Diallage, or schiller-spar, crystallized
serpentine, 37, 77.
Dicotyledonous plants, 27.

Diluvian agency, its effects in denuda-
tions and transportation of blocks of
rocks, 354.

Diluvium, or diluvial beds, 313; fossil
remains of large quadrupeds in, 330.
Direction of a metallic vein, 286.
Disintegration, or wearing down of
rocks, 313; instances of in England,
314; of Mont Grenier, 316; rapidly
going on in the Alps, 313; causes of,
319; advantages of, 322.
Dolerite, composed of felspar and au-
gite, 80.

Dolomite, a magnesian limestone, 77;
forms vast beds in the western Alps,
ib.; Von Buch's theory respecting it,
ib.
Dome-shaped mountains in Auvergne,
their origin, 269.

Druses, or hollows in metallic veins,
287.

Dudley, transition limestone of, 88; ba-
salt of, 145.

Dyke, signifies a wall, 105; basaltic 134.

E.

Earth, form and density of, Chap. I. 3;
temperature of, higher at a former
epoch than at present, 357; observa-
tions on various sources of heat, 358
-363; spheroidal figure of, indicates
an orignal state of fluidity, 364.
Earths, simple, of which rocks are prin-
cipally composed, when pure are in-
fusible, 31.

Earthy, composed of minute parts, re-
sembling dried earth, 38.
Earthquakes and volcanoes, Chapter
XVIII. 250; connection, ib.; distance
to which earthquakes extend, 251;
affect distant springs and wells, ib.;
earthquake at Geneva, 252; frequen-
cy of earthquakes at particular peri-
ods, ib.; at Lisbon, and over Europe,
254; earthquakes more powerful in
mines than on the surface, 255; earth-
quakes in England, 255; electric the-
ory of earthquakes, ib.; earthquake
at Valparaiso, 68.
Eboulements, 315, 319.
Elementary substances, of which the
solid matter of the globe is composed,

31.

Elephant, fossil, in ice, discovered in Si-
beria, 25, living elephants in the Him-
alayan Mountains with shaggy hair,
ib.; fossil, supposed by Cuvier to dif-
fer from elephants now living, ib.;
some species fitted to live in cold cli-
mates, 334; probably migratory, ib.;
immense numbers of their bones and
tusks found near the Frozen Ocean,
ib.; teeth of, found by hundreds on
the Norfolk coast, 357.
Elevation of granite, 153; of rocks,
two epochs of, 168.

of mountain ranges and con-
tinents, (Chap. XXII), 335; of the
granite of Charnwood, more ancient
than that of Mont Blanc, ib.; of the
Cote d'Or, &c., 337; of the Pyrenees,
338, 340; of the western Alps, 338;
Provence and Mont Blanc, 338.

of large continents distinct
from that of mountain ranges, 341;
of the Himalaya Mountains, 343; re-
cent instances of, 344.

· of mountains and strata, 52;
by subterranean heat, 69.
Elk, bones of, found in Ireland, 333.
Elvan of Cornwall is a porphyritic eu-
rite or white stone, 81.

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