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fragment, he considers that no apology is needed, so long as those sentiments have not-and he trusts they have in no degree-blinded his judgment to the merits of the illustrious successors of De Luc,
the heirs and improvers of his discoveries.
LONDON, May 10, 1831.
Fundamental point in Geology established by De Luc-Geological
Chronometers-Residence of the Sea upon extensive portions of
our Continents for a considerable time immediately before the last
revolution
SECTION III.
Connection between the Mosaic Narrative of the Deluge and Geolo-
gical Phenomena..
333
8
SECTION IV.
Two Periods in the History of the earth-one prior, the other poste-
rior to the existence of our Continents-In the latter Period there
is a fixed Chronology: in the former, a series of Geological Events
may be traced, in which we discern only a succession of subor-
dinate epochs, without determination of time-Summary view of
that series-Origin assigned to the Mineral Strata and to the
Atmosphere-Successive changes in the nature of our Mineral
Beds; disturbances which they have suffered-Causes of those
two great Phenomena of Geology indicated-Proofs of changes,
at several epochs, both in the Liquid of the Sea, and in the
Atmosphere.....
39.
SECTION V.
Agreement of Cuvier and Alex. Brongniart with De Luc in his
General Statement of Geological Phenomena, and his Views re-
specting the Causes and Operations that relate to them.......
SECTION VI.
Mosaic Days, to be considered as Indefinite Periods-Arguments in
support of that Opinion-Ancient and Modern Authorities-Con-
nection between the Mosaic Narrative of the CREATION, and
Geological Phenomena
PAGE
76
86
SECTION VII.
General Inferences-A true Theory in Geology not undiscoverable-
Approximations to such a Theory by De Luc.....
SECTION VIII.
Moral importance of Geology-Means of facilitating its study indi-
cated by De Luc....
118
....
131
CONTENTS OF THE LETTERS.
LETTER I.
On the Phenomena characterizing the Causes that have formerly
operated upon the Terrestrial Globe; and particularly on those
which fix the date of the Origin of our Continents
LETTER II.
Analysis of Geological Phenomena, leading to a determination of
their Origin..
41
LETTER III.
On the History of the Earth, from the origin of what is now observed
upon it, down to the production of the Strata of Sand-stone
First Period
Second Period
Third Period
Fourth Period
Fifth Period...
81
83
93
105
111
116
LETTER IV.
On the History of the Earth, from the time of the formation of the
calcareous strata, to the last period in which the Sea remained in
its ancient Bed; a long space of time, which comprises, in parti-
cular, the Origin of Volcanic Eruptions and of Coal Beds; the
formation of the strata of Chalk and Rock Salt; and the History
of the Quadrupeds, of which we find the remains in our strata.... 137
Of Volcanic Eruptions
137
155
166
172
173
176
LETTER V.
Birth of our Continents-Proofs of the little distance of that epoch 182
History of the Earth since the birth of our Continents......
LETTER VI.
190
A Physical Commentary on the eleven first Chapters of Genesis.... 230
APPENDIX.
Containing Remarks on some erroneous representations relative to
the Author, in a work entitled, "A Comparative Estimate of the
Mineral and Mosaical Geologies".
273
ERRATA.
Introduction, Page 19, line 24, note, after elevation, omit inverted commas.
32, 18, note, add inverted commas after England.
Letters,
38,
15, last line but one, for Section II. Although interchanges of
107,