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""Charles Lyell ""; ""Author's Preface""; ""Preface to Fourth Edition""; ""CONTENTS""; ""CHAPTER I. ON THE DIFFERENT CLASSES OF ROCKS""; "" Geology defined 8""; "" Successive formation of the earth's crust 9""; "" Aqueous rocks-stratification and imbedded fossils 10""; "" Classification of rocks according to origin and age 10""; "" AÃ"rial or Ã?olian rocks 12""; "" Volcanic rocks, with and without cones and craters 13""; "" Plutonic rocks, and their relation to the volcanic 14""; "" Metamorphic rocks, and their probable origin 15""; "" Hypogene rocks 16""

""CHAPTER II. AQUEOUS ROCKS-THEIR COMPOSITION AND FORMS OF STRATIFICATION"""" Mineral composition of strata 18""; "" Siliceous rocks 18""; "" Argillaceous rocks 19""; "" Calcareous rocks 20""; "" Coal 23""; "" Ripple mark 29""; ""CHAPTER III. ARRANGEMENT OF FOSSILS IN STRATA-FRESHWATER AND MARINE""; "" Successive deposition indicated by fossils 31""; "" Limestones formed of corals and shells 32""; "" Proofs of gradual increase of strata derived from fossils 33""; "" Serpula attached to Spatangus 33""; "" Wood bored by Teredina 34""; "" Tripoli formed of infusoria 36""

"" Chalk derived principally from organic bodies 37"""" Distinction of freshwater from marine formations 37""; "" Freshwater and land shells-genera 38""; "" Rules for recognising marine testacea 39""; "" Gyrogonite and Chara 43""; "" Alternation of marine and freshwater deposits 44""; "" Freshwater fishes 44""; "" Deep-sea deposits 45""; "" Lym-Fjord 45""; ""CHAPTER IV. CONSOLIDATION AND SUBSEQUENT ALTERATIONS OF STRATA AND PETRIFACTION OF FOSSILS.""; "" Chemical and mechanical deposits 47""; "" Cementing together of particles 48""; "" Hardening deposits by exposure to air 49""

"" Concretionary nodules 50"""" Consolidating effects of pressure 51""; "" Mineralisation of organic remains 53""; "" Fossil wood 54""; "" Impressions and casts, how formed 54""; "" Göppert's experiments 55""; "" Lime and silex in solution-sources 56""; "" Precipitation most rapid where putrefaction is going on 56""; ""CHAPTER V. ELEVATION OF STRATA ABOVE THE SEA-HORIZONTAL AND INCLINED STRATIFICATION""; "" Marine strata due to the rising up of the land 58""; "" Strata of deep sea and shallow-water origin alternate 61""; "" Anticlinal and synclinal curves 62""

"" Marine and freshwater beds and old land surfaces 62"""" Vertical, inclined, and folded strata 62""; "" Theories to explain lateral movements 64""; "" Dip and strike 67""; "" Forms of outcrop 69""; "" Structure of the Jura 69""; "" Synclinal strata forming ridges 71""; "" Connection of fracture and flexure of rocks 73""; "" Faults described 74""; "" Inverted strata 74""; "" Superficial signs of the faults obliterated by denudation 75""; "" Great faults the result of repeated movements 79""; "" Unconformability 81""; "" Overlapping strata 81""; ""CHAPTER VI. DENUDATION""

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