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 11
Pagina 22
... comparative anatomy of fish , amphibia , and reptiles had been carefully studied it was evident that the amphibia stood far nearer the fish in general structure , while the higher reptiles closely approached birds . Then it was noticed ...
... comparative anatomy of fish , amphibia , and reptiles had been carefully studied it was evident that the amphibia stood far nearer the fish in general structure , while the higher reptiles closely approached birds . Then it was noticed ...
Pagina 27
... comparative anatomy of all the different groups of animals ; second , their comparative embryology ; and third , their palę- ontological history . Each source has its difficulties or defects . But taken all together they give us a ...
... comparative anatomy of all the different groups of animals ; second , their comparative embryology ; and third , their palę- ontological history . Each source has its difficulties or defects . But taken all together they give us a ...
Pagina 52
... comparative anatomy point to such a form as a very possible ancestor of all forms higher than flat worms , viz . , mollusks , arthropods , and vertebrates . It was probably rather long and cylindrical , resem- bling a small and short ...
... comparative anatomy point to such a form as a very possible ancestor of all forms higher than flat worms , viz . , mollusks , arthropods , and vertebrates . It was probably rather long and cylindrical , resem- bling a small and short ...
Pagina 82
... true backbone . I have described the process as if it were very simple . But only the student of comparative osteology can have any con- ception of the number of experiments which were tried in 82 THE WHENCE AND THE WHITHER OF MAN.
... true backbone . I have described the process as if it were very simple . But only the student of comparative osteology can have any con- ception of the number of experiments which were tried in 82 THE WHENCE AND THE WHITHER OF MAN.
Pagina 85
... comparative rest , perhaps retrogression . We have given thus a rapid sketch in outline of the changes in the most characteristic systems between fish and mammals . Some of the changes which took place in mammals were along the same ...
... comparative rest , perhaps retrogression . We have given thus a rapid sketch in outline of the changes in the most characteristic systems between fish and mammals . Some of the changes which took place in mammals were along the same ...
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