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 40
Pagina xii
... change in the form of our history we have eliminated to a large extent the sources of uncertainty and error . And the dominant function of a group throws no little light on the details of its anatomy . * See condensed Chart of ...
... change in the form of our history we have eliminated to a large extent the sources of uncertainty and error . And the dominant function of a group throws no little light on the details of its anatomy . * See condensed Chart of ...
Pagina 18
... changes would necessarily remain unnoticed or unexplained that you would hardly believe that they could have any genetic relation or belong to one developmental series . But the history which I must attempt to condense for you is ...
... changes would necessarily remain unnoticed or unexplained that you would hardly believe that they could have any genetic relation or belong to one developmental series . But the history which I must attempt to condense for you is ...
Pagina 23
... changes of frogs and toads coincide with what is known of their succes- sion in past ages . The characteristics of extinct genera of mammals exhibit everywhere indications that their living representatives in early life resemble them ...
... changes of frogs and toads coincide with what is known of their succes- sion in past ages . The characteristics of extinct genera of mammals exhibit everywhere indications that their living representatives in early life resemble them ...
Pagina 32
... change of form is a lower grade of the contractility of our muscular cells . Prick it with a needle and it con- tracts . It recognizes its food even at a microscopic CHAPTER II PROTOZOA TO WORMS: CELLS, TISSUES, AND ORGANS Amoeba: Its ...
... change of form is a lower grade of the contractility of our muscular cells . Prick it with a needle and it con- tracts . It recognizes its food even at a microscopic CHAPTER II PROTOZOA TO WORMS: CELLS, TISSUES, AND ORGANS Amoeba: Its ...
Pagina 41
... change from the one form into the other is not as difficult or improbable as one might naturally think . And plants and animals are here so near together , and travelling by roads so nearly parallel , that , even if volvox never was an ...
... change from the one form into the other is not as difficult or improbable as one might naturally think . And plants and animals are here so near together , and travelling by roads so nearly parallel , that , even if volvox never was an ...
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