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Amphibians animals Archaean areas Atlantic border beds bones Brachiopods called carbon Carboniferous Carboniferous age Cenozoic Champlain period coal coal-beds coal-measures color continent corals Cretaceous Crinoids crystalline crystals deposits Devonian dry land earth earth's crust Eocene Europe feet feldspar Fishes fissures flexures folds formation forms fossils fractures fresh-water Ganoids Glacial glacier gneiss granite gravel Greek heat height hence hornblende igneous rocks iron Jurassic kinds Lake layers lime limestone Lower Silurian Mammals marine melted Mesozoic metamorphism mica mica schist miles minerals Miocene Mississippi modern Mollusks moun Mountain region mountain-making nearly North America numbers ocean Paleozoic Placoderms plants Pliocene progress quartz Radiates relics represented in Fig Reptiles Rhizopods ridges rivers rock-making Rocky Mountain sand sand-beds sandstone schist scratches seas shales shells shown in Fig shows silica slope sometimes species Sponges stones strata streams summit surface Tertiary thickness Trenton Triassic tribe Trilobites upturning valleys Vertebrates volcanoes waters York
Page 79 - The ocean has done but little valleymaking, and only that of the broadest kind, when its wide currents swept over the submerged continent. The gorging of mountains and plains it has left to the running waters of the land. These running waters have been aided in some cases by glacier-ice (page 58). 2. Valleys made by the upheaval of mountains. — The wide Mississippi valley is a depression between the Rocky Mountains on the west and the Appalachians on the east. The making of these mountains was...
Page xii - American Naturalist," Salem. GEOLOGY. THE word Geology is from two Greek words signifying the story of the earth. As used in science, it means an account of the rocks which lie beneath the surface and stand out in its ledges and mountains, and of the loose sands and soil which cover them; and also an account of what the rocks are able to tell about the world's early history. By a careful...
Page 244 - Man, and according to an order so perfect and so harmonious in its parts, that the progress is rightly pronounced a development or evolution. Creation by a divine method, that is, by the creative acts of a Being of infinite wisdom, whether through one fiat or many, could be no other than perfect in system, and exact in its relations to all external conditions, — no other, indeed, than the very system of evolution that geological history makes known.