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 27
Pagina v
... of the goal . - Its disadvantages . - Vertebrates : The internal loco- motive skeleton leads to backbone and brain . -Reasons for their dominance -The primitive vertebrate . CHAPTER IV VERTEBRATES : BACKBONE AND BRAIN PAGE 81 The.
... of the goal . - Its disadvantages . - Vertebrates : The internal loco- motive skeleton leads to backbone and brain . -Reasons for their dominance -The primitive vertebrate . CHAPTER IV VERTEBRATES : BACKBONE AND BRAIN PAGE 81 The.
Pagina xii
... primitive animals . A muscular system cannot develop and do its work until some sort of a digestive system has arisen to furnish nutriment , any more than a steam- engine can run without fuel . And a brain is of no use until muscle and ...
... primitive animals . A muscular system cannot develop and do its work until some sort of a digestive system has arisen to furnish nutriment , any more than a steam- engine can run without fuel . And a brain is of no use until muscle and ...
Pagina 18
... primitive Aryan ances- tor or of the rudest savage of the Stone Age . The series must appear exceedingly disconnected . Systems of organs will apparently spring suddenly into exist- ence , and we shall have no time to trace their origin ...
... primitive Aryan ances- tor or of the rudest savage of the Stone Age . The series must appear exceedingly disconnected . Systems of organs will apparently spring suddenly into exist- ence , and we shall have no time to trace their origin ...
Pagina 26
... development . And the development of the excretory system points to an ancestor far more primitive than even the fish . Our embryonic development is one of the very strongest evidences of 26 THE WHENCE AND THE WHITHER OF MAN.
... development . And the development of the excretory system points to an ancestor far more primitive than even the fish . Our embryonic development is one of the very strongest evidences of 26 THE WHENCE AND THE WHITHER OF MAN.
Pagina 27
... primitive ancestor of the corresponding stage . It is much safer for us to study concrete , actual forms than imaginary ones , however real may have been the former existence of the latter . And , after all , their lat- eral divergence ...
... primitive ancestor of the corresponding stage . It is much safer for us to study concrete , actual forms than imaginary ones , however real may have been the former existence of the latter . And , after all , their lat- eral divergence ...
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