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 30
Pagina 4
... remains but an ape . He must comfort himself with the thought that , while he and his descendants can never gain an inch , the gap - between himself and the next higher form shall be far greater than that between himself and the lowest ...
... remains but an ape . He must comfort himself with the thought that , while he and his descendants can never gain an inch , the gap - between himself and the next higher form shall be far greater than that between himself and the lowest ...
Pagina 18
... 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 measured by ages , and the ...
... 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 measured by ages , and the ...
Pagina 25
... step ; it is a long march from the egg to the earthworm ; and the vertebrate embryo makes a vast journey . But embryonic life is and must remain short . Hence in higher forms the THE PROBLEM : THE MODE OF ITS SOLUTION 25.
... step ; it is a long march from the egg to the earthworm ; and the vertebrate embryo makes a vast journey . But embryonic life is and must remain short . Hence in higher forms the THE PROBLEM : THE MODE OF ITS SOLUTION 25.
Pagina 26
... remain short . Hence in higher forms the ancestral stages will often be slurred over and very in- completely represented . And the embryo may , and often does , shorten the path by " short cuts " impossi- ble to its original ancestor ...
... remain short . Hence in higher forms the ancestral stages will often be slurred over and very in- completely represented . And the embryo may , and often does , shorten the path by " short cuts " impossi- ble to its original ancestor ...
Pagina 35
... remain long in this condition . In contact with the oxygen from the air it is soon oxidized , burned up to furnish the energy neces- sary for the motion and irritability of the body . We are all of us low - temperature engines . The ...
... remain long in this condition . In contact with the oxygen from the air it is soon oxidized , burned up to furnish the energy neces- sary for the motion and irritability of the body . We are all of us low - temperature engines . 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