The Whence and the Whither of Man: A Brief History of His Origin and Development Through Conformity to Environment; Being the Morse Lectures of 1895C. Scribner's Sons, 1897 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 25
Pagina vi
... Reflex action , unconscious and comparatively mechanical . -Instinctive action : The actor is conscious , but guided by heredity . — In- telligent action . - The actor is conscious , guided by intelligence resulting from experience or ...
... Reflex action , unconscious and comparatively mechanical . -Instinctive action : The actor is conscious , but guided by heredity . — In- telligent action . - The actor is conscious , guided by intelligence resulting from experience or ...
Pagina 64
... reflex influence of the eye on the brain was the greatest advantage of all . Hitherto with feeble ruuscles and sense - organs it has hardly paid the animal to devote more material to building a larger brain . 64 THE WHENCE AND THE ...
... reflex influence of the eye on the brain was the greatest advantage of all . Hitherto with feeble ruuscles and sense - organs it has hardly paid the animal to devote more material to building a larger brain . 64 THE WHENCE AND THE ...
Pagina 75
... reflex action of the muscles of the body . But the development of these distinct portions and the division of labor between them must have been a long and gradual process . We have every reason to believe that here , as in in- sects ...
... reflex action of the muscles of the body . But the development of these distinct portions and the division of labor between them must have been a long and gradual process . We have every reason to believe that here , as in in- sects ...
Pagina 93
... reflex influence in de- been enormous . The arm is veloping the brain has shorter and the hand smaller . The brain is absolute- ly and relatively large , and its surface greatly convo- luted . This gives place for a large amount of ...
... reflex influence in de- been enormous . The arm is veloping the brain has shorter and the hand smaller . The brain is absolute- ly and relatively large , and its surface greatly convo- luted . This gives place for a large amount of ...
Pagina 105
... reflex effect upon the supra- œsophageal ganglion cannot be over - estimated . The animal will very soon begin to think . Between the turbellarian and the annelid many aber- rant lines diverged . Some of these attained a compara- tively ...
... reflex effect upon the supra- œsophageal ganglion cannot be over - estimated . The animal will very soon begin to think . Between the turbellarian and the annelid many aber- rant lines diverged . Some of these attained a compara- tively ...
Altre edizioni - Visualizza tutto
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1896 |
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1896 |
The Whence and the Whither of Man: A Brief History of His Origin and ... John Mason Tyler Visualizzazione completa - 1899 |
Parole e frasi comuni
advance amoeba amphibia anatomical ancestors animal kingdom annelid apes appear appetite archenteron attained become better birds body brain cells conformity to environment conscious degeneration dominant ectoderm embryo embryology existence experience eyes fish functions future ganglion gastrula gills give groups higher animals higher forms highest human hydra important increase individual insect instinct intelligence jaws knowledge laws layer legs living locomotion lower mammals man's marsupial membrane ment mental mind mode modified mollusks moral mouth muscles muscular muscular system mutability of species natural selection nephridia nerve nervous system never notochord nutriment organs oxygen parapodia perception perivisceral cavity possible primitive probably progress protoplasm protozoa purely race reflex action reptiles result schematic worm segments selfish sense-organs sequence shell skeleton species spermatozoa stage structure struggle surface survive swimming theory of evolution tion tissues true truth turbellaria unselfishness variation velopment vertebrates volvox young