The Origin and Evolution of Life: On the Theory of Action, Reaction and Interaction of EnergyCharles Scribner's Sons, 1917 - 322 oldal |
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actions and reactions adaptive radiation algæ American Museum amphibians ancestral appear aquatic arboreal armature armored atmosphere author by W. K. bacteria birds body form calcium Cambrian carbon CARBONIFEROUS carnivorous cell changes characters chemical elements chemical messengers chlorophyll chromatin colloids complex compounds continental Darwin deposits Devonian dinosaurs earth energy environment enzymes Eocene eurypterids evolve existing fishes fossil function geologic germ habitat habitat zones heat herbivorous heredity heredity-chromatin hydrogen ichthyosaurs iguanodont inorganic interaction invertebrates Jurassic known lifeless limbs living matter Loeb mammalian mammals marine mosasaurs Museum of Natural Natural History nitrogen North America observed ocean Oligocene organism origin Osborn ostracoderms oxygen pelagic period Permian phase physicochemical plants and animals plesiosaurs present primitive primordial proteins protoplasm Protozoa recent reptiles REPTILIA Sauropoda Schuchert seas sharks Silurian similar skeleton species stage structure substances swift-moving teeth terrestrial theory tion tissues Triassic types Upper Cretaceous velocity vertebrates W. K. Gregory Walcott
Népszerű szakaszok
12. oldal - 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.
57. oldal - 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.
12. oldal - Lex I Corpus omne perseverare in statu suo quiescendi vel movendi uniformiter in directum, nisi quatenus illud a viribus impressis cogitur statum suum mutare.
13. oldal - 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.
xi. oldal - It is quite certain that we cannot become sufficiently acquainted with organized creatures and their hidden potentialities by aid of purely mechanical natural principles, much less can we explain them ; and this is so certain, that we may boldly assert that it is absurd for man even to conceive such an idea, or to hope that a Newton may one day arise able to make the production of a blade of grass comprehensible, according to natural laws ordained by no intention; such an insight we must absolutely...
13. oldal - Actioni contrariam semper et aequalem esse reactionem: sive corporum duorum actiones in se mutuo semper esse aequales et in partes contrarias Doesn't make much sense?
240. oldal - 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.
9. oldal - 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.
36. oldal - 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...
viii. oldal - The demonstration of evolution as a universal law of living nature is the great intellectual achievement of the nineteenth century. Evolution has outgrown the rank of a theory, for it has won a place in natural law beside Newton's law of gravitation, and in one sense holds a still higher rank, because evolution is the universal master, while gravitation is one among its many agents.