The Whence and the Whither of Man: A Brief History of His Origin and Development Through Conformity to Environment; Being the Morse Lectures of 1895W. Blackwood and Sons, 1896 - 312 pagine |
Dall'interno del libro
Risultati 1-5 di 39
Pagina xi
... than one of anatomical details . The latter characterize small groups , genera , families , or classes ; while the dominant function characterizes all xii INTRODUCTION animals of a given grade , even those INTRODUCTION xi.
... than one of anatomical details . The latter characterize small groups , genera , families , or classes ; while the dominant function characterizes all xii INTRODUCTION animals of a given grade , even those INTRODUCTION xi.
Pagina xii
... sources uncertainty and error . And the dominant function a group throws no little light on the details of anatomy . * See condensed Chart of Development , etc. , p . 309 . If we can be satisfied that ever higher functions have.
... sources uncertainty and error . And the dominant function a group throws no little light on the details of anatomy . * See condensed Chart of Development , etc. , p . 309 . If we can be satisfied that ever higher functions have.
Pagina 21
... groups had to be rearranged . Reptiles and amphibia were at first united in one class because of their resemblance in external form . Our common salamanders look so much like lizards that they generally pass by this name . But the young ...
... groups had to be rearranged . Reptiles and amphibia were at first united in one class because of their resemblance in external form . Our common salamanders look so much like lizards that they generally pass by this name . But the young ...
Pagina 22
... groups of the same belonged to these generalized groups , and that more highly specialized forms — that is , those in which the special class distinctions were more sharply and uni- versally marked - were of later geological origin ...
... groups of the same belonged to these generalized groups , and that more highly specialized forms — that is , those in which the special class distinctions were more sharply and uni- versally marked - were of later geological origin ...
Pagina 23
... groups . The embryos of higher forms , he said , pass through and beyond certain stages of structure , which are permanent in lower and older members of the same group . em- You remember that the fin on the tail of a fish is as a rule ...
... groups . The embryos of higher forms , he said , pass through and beyond certain stages of structure , which are permanent in lower and older members of the same group . em- You remember that the fin on the tail of a fish is as a rule ...
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
amoeba amphibia anatomical ancestors animal kingdom annelid apes appear appetite attained become birds body brain cavity cells cerebrum Cheaper Edition church conformity to environment conscious Crown 8vo degeneration Demy 8vo digestive dominant ectoderm embryo evolution experience eyes Fcap fish functions ganglion gastrula germ-plasm give groups higher forms highest human hydra Illustrations increase individual insect instinct intelligence laws layer legs living locomotion lower mammals man's marsupial ment mental mind mode modified mollusks moral muscles muscular natural selection nerve nervous system never notochord nutriment organs oxygen parapodia perception perivisceral Portrait Post 8vo primitive probably Professor progress protoplasm protozoa purely reflex action reproductive reptiles result schematic worm Scotland segments selfish sense-organs sequence skeleton species stage structure struggle surface survive swimming theory tion true truth turbellaria University of Edinburgh variation velopment vertebral column vertebrates vols volvox WHITHER young