The Origin and Evolution of Life: On the Theory of Action, Reaction and Interaction of Energy |
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Common terms and phrases
actions and reactions adaptive radiation Africa algæ American Museum amphibians ancestral animals appear aquatic arboreal armature armored author by W. K. bacteria birds body form bony calcium Cambrian carbon CARBONIFEROUS carnivorous causes cell changes characters chemical messengers chlorophyll chromatin colloids complex compounds continental DEPOSITS Devonian dinosaurs earth elements energy environment enzymes Eocene eurypterids evolution evolved existing fishes fossil function ganoids geologic germ habitat zones heat herbivorous heredity heredity-chromatin hydrogen ichthyosaurs iguanodonts interaction invertebrates Jurassic known limbs living LOWER CRETACEOUS mammalian mammals marine mid-Cambrian mosasaurs Museum of Natural Natural History nitrogen North America observed Oligocene Ordovician organism origin ostracoderms oxygen PALAEOZOIC pelagic period Permian PERMO phase physicochemical plants plesiosaurs primitive primordial proteins protoplasm Protozoa recent reptiles REPTILIA Sauropoda Schuchert seas sharks Silurian similar skeleton species stage structure swift-moving teeth terrestrial tion tissues Triassic types Upper Cretaceous velocity vertebrates W. K. Gregory Walcott
Popular passages
Page 11 - To every action there is always opposed an equal reaction: or, the mutual actions of two bodies upon each other are always equal and directed to contrary pans.
Page 10 - Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.
Page 55 - It will, in short, become possible to introduce into the economy a molecular mechanism which, like a very cunningly- contrived torpedo, shall find its way to some particular group of living elements, and cause an explosion among them, leaving the rest untouched.
Page 10 - Lex I Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus illud a viribus impressis cogitur statum suum mutare.
Page 176 - Parallel to each other, and at right angles to the direction of the top layer of brush, lay a number of lodge poles for binders (Fig.
Page 298 - Bull. 3, p. 1-233, 29 pis. 1914, The Upper Cretaceous and Eocene floras of South Carolina and Georgia : US Geol.
Page 240 - But the causes and conditions of variation have yet to be thoroughly explored, and the importance of natural selection will not be impaired, even if further enquiries should prove that variability is definite, and is determined in certain directions rather than in others by conditions inherent in that which varies.
Page 7 - Nature produces those things which, being continually moved by a certain principle contained in themselves, arrive at a certain end."2 What this internal moving principle is remains to be discovered.