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, 1899 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 34
Pagina 6
... seen . We have all of us a great deal of innate snobbery , we would rather have been born great than to have won greatness by the most heroic struggle . But is man any less a man for having arisen from something lower , and being in a ...
... seen . We have all of us a great deal of innate snobbery , we would rather have been born great than to have won greatness by the most heroic struggle . But is man any less a man for having arisen from something lower , and being in a ...
Pagina 23
... seen that sharks and ganoids are older than cod . In the embryo of the cod or perch the backbone has , at an early stage , the same position as in the shark or ganoid ; only at a later stage does it attain its definite position . So ...
... seen that sharks and ganoids are older than cod . In the embryo of the cod or perch the backbone has , at an early stage , the same position as in the shark or ganoid ; only at a later stage does it attain its definite position . So ...
Pagina 26
... seen that the embryonic bird has the long tail of his reptilian ancestor . In early embryonic life it has gill - slits leading from the pharynx to the outside of the neck like those through which the water passes in the respiration of ...
... seen that the embryonic bird has the long tail of his reptilian ancestor . In early embryonic life it has gill - slits leading from the pharynx to the outside of the neck like those through which the water passes in the respiration of ...
Pagina 37
... seen that the fusion of two amœbæ results in a new rejuvenated individual . Why is a mixture of two protoplasms better than one ? We can frame hypotheses ; we know nothing about it . What of the mind of the amœba ? A host of questions ...
... seen that the fusion of two amœbæ results in a new rejuvenated individual . Why is a mixture of two protoplasms better than one ? We can frame hypotheses ; we know nothing about it . What of the mind of the amœba ? A host of questions ...
Pagina 62
... seen from dorsal surface . fa , fp , fc , feelers ; a , eye ; k , gill ; p , parapodia ; ac , anal cirri . bands of longitudinal mus- cles . These latter have been grouped in the four quad- rants , a much more effective arrangement than ...
... seen from dorsal surface . fa , fp , fc , feelers ; a , eye ; k , gill ; p , parapodia ; ac , anal cirri . bands of longitudinal mus- cles . These latter have been grouped in the four quad- rants , a much more effective arrangement than ...
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 - 1897 |
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 digestion and reproduction dominant embryo embryology entoderm existence experience eyes fish functions future ganglion gastrula germ-plasm give groups 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 race reflex action reptiles result schematic worm segments selfish sense-organs sequence shell skeleton species spermatozoa stage structure struggle surface survive swimming tion tissues true truth turbellaria unselfishness variation velopment vertebral column vertebrates volvox young