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, 1897 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 57
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 ...
... 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 ...
Pagina xiii
... worm is inadequate and likely to mislead us , unless we remember that a worm was the ancestor of man . And a biologist who INTRODUCTION xiii.
... worm is inadequate and likely to mislead us , unless we remember that a worm was the ancestor of man . And a biologist who INTRODUCTION xiii.
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 amoeba , 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 amoeba , 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
... . Two rather small and weak individuals fuse together in one animal of renewed vigor , which soon divides into two The old amoeba has divided larger and stronger descendants . We have here evi- dently 3 PROTOZOA TO WORMS 33.
... . Two rather small and weak individuals fuse together in one animal of renewed vigor , which soon divides into two The old amoeba has divided larger and stronger descendants . We have here evi- dently 3 PROTOZOA TO WORMS 33.
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 - 1899 |
Parole e frasi comuni
advance amoeba amphibia anatomical ancestors animal kingdom annelid apes appear appetite archenteron attained become better birds body brain cells conformity to environment conscious degeneration dominant ectoderm embryo embryology existence experience eyes fish functions future ganglion gastrula gills give groups 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 membrane ment mental mind mode modified mollusks moral mouth muscles muscular muscular system mutability of species natural selection nephridia nerve nervous system never notochord nutriment organs oxygen parapodia perception perivisceral cavity 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 theory of evolution tion tissues true truth turbellaria unselfishness variation velopment vertebrates volvox young