Principles of Geology, Being an Attempt to Explain the Former Changes of the Earth's Surface, by Reference to Causes Now in Operation, Volume 1 |
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ages analogy ancient animals and plants Apennines appear arctic ation Auvergne basalt beds calcareous carboniferous catastrophes causes century chap climate continued creation crust deluge deposits depth districts doctrine earth earthquakes elevation Eocene epoch Europe existing extinct feet flood formations formed former changes fossil fossil remains fossil shells genera geographical geological geologists globe heat Hutton igneous igneous rocks imagined infer inhabitants Ischia islands Italy labours lakes latitudes lava limestone living marine mass Mediterranean Melville Island mineral modern Moro mountains naturalists nature northern hemisphere observations ocean opinions organic remains origin period petrifactions phenomena philosopher present progress proofs quadrupeds recent regard regions revolutions rivers rocks sand secondary Sicily snow species Spitzbergen springs Steno Strabo strata Subapennine submarine subterranean succession supposed temperature tertiary strata testacea theory thousand tion travertin tropical Val di Noto valleys vegetation views volcanic Werner whole writers zone