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 56
Pagina v
... WORMS TO VERTEBRATES : SKELETON AND HEAD 55 Worms and the development of organs . - Mollusks : The external protec- tive skeleton leads to degeneration or stagnation . - Annelids and arthro- pods : The external locomotive skeleton leads ...
... WORMS TO VERTEBRATES : SKELETON AND HEAD 55 Worms and the development of organs . - Mollusks : The external protec- tive skeleton leads to degeneration or stagnation . - Annelids and arthro- pods : The external locomotive skeleton leads ...
Pagina 31
... language , her voice is not heard . But her rule is gone out throughout all the earth , and her words to the end of the world . " CHAPTER II PROTOZOA TO WORMS : CELLS , TISSUES , THE PROBLEM : THE MODE OF ITS SOLUTION 31.
... language , her voice is not heard . But her rule is gone out throughout all the earth , and her words to the end of the world . " CHAPTER II PROTOZOA TO WORMS : CELLS , TISSUES , THE PROBLEM : THE MODE OF ITS SOLUTION 31.
Pagina 32
... WORMS : CELLS , TISSUES , AND ORGANS THE first and lowest form in our ancestral series is the amœba , a little fresh - water animal from to Too of an inch in diameter . Under the mi- croscope it looks like a little drop of mucilage ...
... WORMS : CELLS , TISSUES , AND ORGANS THE first and lowest form in our ancestral series is the amœba , a little fresh - water animal from to Too of an inch in diameter . Under the mi- croscope it looks like a little drop of mucilage ...
Pagina 33
... takes place after another mode . Two rather small and weak individuals fuse together in one animal of renewed vigor , which soon divides into two larger and stronger descendants . We have here evi- dently 3 PROTOZOA TO WORMS 33.
... takes place after another mode . Two rather small and weak individuals fuse together in one animal of renewed vigor , which soon divides into two larger and stronger descendants . We have here evi- dently 3 PROTOZOA TO WORMS 33.
Pagina 35
... surface , and much the same is true of digestion . But the amount of oxygen required , and of waste to be removed is proportional to the mass ; for every par- ticle of protoplasm requires food and oxygen , and pro- PROTOZOA TO WORMS 35.
... surface , and much the same is true of digestion . But the amount of oxygen required , and of waste to be removed is proportional to the mass ; for every par- ticle of protoplasm requires food and oxygen , and pro- PROTOZOA TO WORMS 35.
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