The Origin and Evolution of Life: On the Theory of Action, Reaction and Interaction of Energy |
Contents
| 177 | |
| 184 | |
| 191 | |
| 198 | |
| 210 | |
| 216 | |
| 226 | |
| 234 | |
| 67 | |
| 69 | |
| 78 | |
| 91 | |
| 105 | |
| 111 | |
| 117 | |
| 134 | |
| 141 | |
| 147 | |
| 153 | |
| 161 | |
| 167 | |
| 245 | |
| 251 | |
| 253 | |
| 259 | |
| 272 | |
| 275 | |
| 281 | |
| 287 | |
| 291 | |
| 293 | |
| 307 | |
| 310 | |
Other editions - View all
Common terms and phrases
actions and reactions adaptive radiation Africa algæ American Museum amphibians ancestral appear aquatic arboreal armature armored author by W. K. bacteria bipedal birds body form bony calcium Cambrian carbon CARBONIFEROUS causes cell changes characters chemical messengers chlorophyll chromatin colloids complex compounds continental deposits Devonian dinosaurs earth energy environment enzymes Eocene Epoch evolution evolved existing fishes fossil function ganoids geologic germ habitat zones heat herbivorous heredity heredity-chromatin hydrogen ichthyosaurs iguanodonts interaction invertebrates Jurassic known limbs littoral living matter Loeb LOWER CRETACEOUS mammalian mammals marine mosasaurs Museum of Natural Natural History nitrogen North America observed Oligocene organism origin Osborn ostracoderms oxygen PALAEOZOIC pelagic period Permian PERMO phase physicochemical plesiosaurs primitive primordial proteins protoplasm Protozoa PTEROSAURS reptiles REPTILIA Sauropoda Schuchert seas sharks SILURIAN skeleton solar stage structure substances swift-moving teeth terrestrial Tertiary theory tion tissues transformation Triassic Upper Cretaceous velocity vertebrates W. K. Gregory
Popular passages
Page 12 - 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 13 - The change of motion is proportional to the motive force impressed ; and is made in the direction of the right line in which that force is impressed.
Page 13 - 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 8 - Causation is indeed too obscure a principle to bear the weight of the whole structure of theology. As for the argument from design, see how Darwinian ideas have revolutionized it. Conceived as we now conceive them, as so many fortunate escapes from almost limitless processes of destruction, the benevolent adaptations which we find in Nature suggest a deity very different from the one who figured in the earlier versions of the argument. The fact is that these arguments do but follow the combined suggestions...
Page x - Thus the long period of evolution, experiment, and reasoning which began with the French natural philosopher, Buffon, one hundred and fifty years ago, ends in 1916 with the general feeling that our search for causes, far from being near completion, has only just begun. "Our present state of opinion is this: we know to some extent how plants and animals and man evolve; we do not know why they evolve.
Page 9 - 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.
Page 57 - 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 36 - The amount of calcium carbonate in the oceans cannot be used as a basis for an estimate of their age, since some of it is precipitated upon reaching the salt water, and much of it is used by animals and plants for their skeletons and shells. MOVEMENT OF THE WATER Wave Motion. — Since marine erosion...
Page 92 - ... investigations into the structure, physiology and behavior of cells on the one hand, and of the various types of organisms grouped under the Protista, on the other hand — the combined results, that is to say, of cytology and protistology — appear to me to indicate that the chromatinelements represent the primary and original living units or individuals, and that the cytoplasm represents a secondary product.
Page 12 - ... messengers affect in a similar manner the germinal and bodily chromatin, but this subject is very obscure at present. 1 1 am indebted to my colleague MI Pupin for valuable suggestions in formulating the physical aspect of these principles. He regards Newton's third law as the foundation not only of modern dynamics in the Newtonian sense but in the most general sense, including biological phenomena.