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 14
Pagina 50
... feeling the slightest vibrations in the surrounding water , and thus giving warning of approaching food or danger . The animal has also eyes , and these may be very numerous . They are not able to form images of external objects , but ...
... feeling the slightest vibrations in the surrounding water , and thus giving warning of approaching food or danger . The animal has also eyes , and these may be very numerous . They are not able to form images of external objects , but ...
Pagina 64
... feeling , or possibly of hearing also . But the annelids were probably the first animals to develop an eye capable of forming an image of ex- ternal objects . The importance of this organ in the pursuit of food or the escape from ...
... feeling , or possibly of hearing also . But the annelids were probably the first animals to develop an eye capable of forming an image of ex- ternal objects . The importance of this organ in the pursuit of food or the escape from ...
Pagina 103
... feeling and their nerve fibrils multiply . Remember that these neuro - epithelial sensory cells are suited to respond not merely to pressure , but to a variety of the stimuli , chemical , molecular , and of vibration , which excite our ...
... feeling and their nerve fibrils multiply . Remember that these neuro - epithelial sensory cells are suited to respond not merely to pressure , but to a variety of the stimuli , chemical , molecular , and of vibration , which excite our ...
Pagina 117
... feelings or emotions ; will , the power or state of choice . Let us trace first the de- velopment of intelligence or the ... feeling the waves caused by its approach . It seems also to recognize food at a little distance by a power ...
... feelings or emotions ; will , the power or state of choice . Let us trace first the de- velopment of intelligence or the ... feeling the waves caused by its approach . It seems also to recognize food at a little distance by a power ...
Pagina 118
... feeling the waves caused by approaching food or enemies ; only later as an organ of hearing . Meanwhile the eye has been developing , to perceive the subtle ether vibra- tions . The eye of the turbellaria distinguishes only light from ...
... feeling the waves caused by approaching food or enemies ; only later as an organ of hearing . Meanwhile the eye has been developing , to perceive the subtle ether vibra- tions . The eye of the turbellaria distinguishes only light from ...
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