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 son, 1896 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 43
Pagina x
... possible to write a history of that process . But have we yet sufficient knowledge to justify such an attempt ? Before the history of any period can be written its events must have been accurately chronicled . Biolog- ical history can ...
... possible to write a history of that process . But have we yet sufficient knowledge to justify such an attempt ? Before the history of any period can be written its events must have been accurately chronicled . Biolog- ical history can ...
Pagina 3
... possible . The first theory is that every species is the result of an act of immediate creation . And every true species , however slightly it may differ from its nearest relative , represents such a creative act , and once created is ...
... possible . The first theory is that every species is the result of an act of immediate creation . And every true species , however slightly it may differ from its nearest relative , represents such a creative act , and once created is ...
Pagina 51
... possible but probable . But anyone who has carefully studied the different groups of worms , will , I think , readily grant that in the stage * Cf. p . 35 . of these flat worms reproduction was the dominant function , PROTOZOA TO WORMS 51.
... possible but probable . But anyone who has carefully studied the different groups of worms , will , I think , readily grant that in the stage * Cf. p . 35 . of these flat worms reproduction was the dominant function , PROTOZOA TO WORMS 51.
Pagina 52
... possible height of development . From this time on the mus- cular and nervous systems were to claim an ever - in- creasing share of the nutriment , and the balance for reproduction is to grow smaller . At the close of this lecture I ...
... possible height of development . From this time on the mus- cular and nervous systems were to claim an ever - in- creasing share of the nutriment , and the balance for reproduction is to grow smaller . At the close of this lecture I ...
Pagina 53
... possible con- cerning the animal kingdom , its prospects of attain- ing anything very lofty seem at this point poor . Its highest representative is a headless trunk , without skeleton or legs . It has no brain in any proper sense of the ...
... possible con- cerning the animal kingdom , its prospects of attain- ing anything very lofty seem at this point poor . Its highest representative is a headless trunk , without skeleton or legs . It has no brain in any proper sense of the ...
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 - 1897 |
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 beginning better birds body brain cells cerebrum characteristics conformity to environment conscious degeneration dominant ectoderm embryo embryology entoderm experience eyes fish functions future ganglion gastrula germ-plasm give groups heredity 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 ment mental mind mode modified mollusks moral motives muscles muscular muscular system natural selection nephridia nerve nervous system never notochord nutriment organs oxygen parapodia perception possible primitive probably progress protoplasm protozoa purely 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 vertebral column vertebrates volvox young