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
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Pagina viii
... existence . - Natural selection . - Correlation of organs.- Fortuitous variation . — Origin of the fittest . - Nägeli's theory : Initial ten- dency supreme . - Weismann and the Neo - Darwinians : Natural selection omnipotent . - The Neo ...
... existence . - Natural selection . - Correlation of organs.- Fortuitous variation . — Origin of the fittest . - Nägeli's theory : Initial ten- dency supreme . - Weismann and the Neo - Darwinians : Natural selection omnipotent . - The Neo ...
Pagina xi
... existence ? Did it live to eat , or to move , or to think ? If we cannot tell exactly how it looked , can we tell what it lived for and what it contributed to the evolution of man ? Now , the sequence of dominant functions or aims in ...
... existence ? Did it live to eat , or to move , or to think ? If we cannot tell exactly how it looked , can we tell what it lived for and what it contributed to the evolution of man ? Now , the sequence of dominant functions or aims in ...
Pagina xiii
... existence of the history . Some of the worst errors of biologists are due to their hav- ing forgotten that in the lower stages the germs of the higher must be present , even though invisible to any microscope . Our study of the worm is ...
... existence of the history . Some of the worst errors of biologists are due to their hav- ing forgotten that in the lower stages the germs of the higher must be present , even though invisible to any microscope . Our study of the worm is ...
Pagina xvii
... existence , captivity , and dispersion . Their national existence has long been lost . But Was there ever a nation of grander promise than Greece or Rome ? But Greece died of premature old age , and Rome of rottenness begotten of sin ...
... existence , captivity , and dispersion . Their national existence has long been lost . But Was there ever a nation of grander promise than Greece or Rome ? But Greece died of premature old age , and Rome of rottenness begotten of sin ...
Pagina 10
... existence as a means of aggregating these slight modifications in a divergence sufficient to produce new species , genera , or families . His argu- ment may be very briefly stated as follows : 1. There is in Nature a law of heredity ...
... existence as a means of aggregating these slight modifications in a divergence sufficient to produce new species , genera , or families . His argu- ment may be very briefly stated as follows : 1. There is in Nature a law of heredity ...
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