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actions and reactions adaptive radiation algae American Museum amphibians ancestral appear aquatic armature atmosphere atoms bacteria calcium Cambrian carbon dioxide carnivorous cell changes characters chemical elements chemical life elements chemical messengers chlorophyll chromatin colloids complex compounds continuous Cretaceous Darwin deposits Devonian dinosaurs earth electric enzymes Eocene eurypterids evolve existing fishes fossil function geologic germ habitat habitat zones heat Henderson herbivorous heredity heredity-chromatin heredity-germ hydrogen ichthyosaurs iguanodont interaction invertebrates ions Jurassic known lifeless limbs living matter Loeb mammalian mammals marine molecules motion Mount Wilson Observatory Museum of Natural nitrogen North America observed ocean organism origin Osborn ostracoderms oxygen pelagic period Permian phase Pirsson plants and animals plesiosaurs present primitive primordial principle processes proteins protoplasm Protozoa reptiles reptilian rocks Sauropoda Schuchert skeleton sodium solar stage structure substances surface swift-moving terrestrial theory tion tissues Triassic types velocity vertebrates W. K. Gregory Walcott
Strana 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.
Strana 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.
Strana 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.
Strana 10 - Actioni contrariam semper et aequalem esse reactionem; sive corporum duorum actiones in se mutuo semper esse aequales et in paries contrarias dirigi.
Strana xi - 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...
Strana x - ... waves of faith in one explanation and then in another: each of these waves of confidence has ended in disappointment, until finally we have reached a stage of very general scepticism.
Strana 6 - 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...
Strana 7 - ... in the evolution of life is no longer a matter of opinion, but of direct observation. So far as law is concerned, we observe that the evolution of life forms is like that of the stars: their origin and evolution as revealed through palaeontology go to prove that Aristotle was essentially right .when he said that "Nature produces those things which, being continually moved by a certain principle contained in themselves, arrive at a certain end."- What this internal moving * principle is remains...
Strana 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.
Strana 241 - It is quite conceivable that every species tends to produce varieties of a limited number and kind, and that the effect of natural selection is to favour the development of some of these, while it opposes the development of others along their predetermined lines of modification.