(Chapter 27.)
FOREIGN.
Lower portion of Barrande's "Primordial" zone in Bohemia. (Chapter 27.)
Fucoid sandstones of Sweden. (Chapter 27.)
Huronian series of Canada? (Chapter 27.)
LAURENTIAN.
29. UPPER LAURENTIAN.
BRITISH.
Fundamental gneiss of the Hebrides? (Chapter 27.)
Hypersthene rocks of Skye? (Chapter 27.)
FOREIGN.
Labradorite series north of the river St. Lawrence in Canada. (Chapter 27.)
Adirondack mountains of New York. (Chapter 27.)
30. LOWER LAURENTIAN.
BRITISH.
Wanting?
FOREIGN.
Beds of gneiss and quartzite, with interstratified limestones, in one of which,
1000 feet thick, occurs a foraminifer, Eozoon Canadense, the oldest known
fossil. (Chapter 27.)
CHAPTER IX.
CLASSIFICATION OF TERTIARY FORMATIONS.
Order of Succession of Sedimentary Formations.
Frequent Unconformability of Strata.
Imperfection of the Record.
Defectiveness of the Monuments greater in Proportion to their Antiquity.
Reasons for studying the newer Groups first.
Nomenclature of Formations.
Detached Tertiary Formations scattered over Europe.
Value of the Shell-bearing Mollusca in Classification.
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