A New Theory of Organic EvolutionW. Blackwood and Sons, 1903 - 174 páginas |
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Página 10
... observation that individuals of the same race differ in inherited vitality or life - force , and we know that rarely do two individuals grow to maturity under the same conditions in respect of quality or quantity of food or external ...
... observation that individuals of the same race differ in inherited vitality or life - force , and we know that rarely do two individuals grow to maturity under the same conditions in respect of quality or quantity of food or external ...
Página 11
... observations we base the following working hypothesis , which we propose to use as a key to further discoveries , and to test by the explanation it offers of various phenomena of life . Hypothesis . Life is a combination of forces that ...
... observations we base the following working hypothesis , which we propose to use as a key to further discoveries , and to test by the explanation it offers of various phenomena of life . Hypothesis . Life is a combination of forces that ...
Página 14
... observations ; and when we find that the inferences arrived at , and handed down from generation to genera- tion of those deeply interested observers , have become an unshakable conviction , we may accept it without hesitation . " Now ...
... observations ; and when we find that the inferences arrived at , and handed down from generation to genera- tion of those deeply interested observers , have become an unshakable conviction , we may accept it without hesitation . " Now ...
Página 40
... observe that no two engines are absolutely identical , but differ in re- spect of quality of materials or of work- manship , or in efficiency , just as from anal- ogous causes two animals of the same race differ in expression of type or ...
... observe that no two engines are absolutely identical , but differ in re- spect of quality of materials or of work- manship , or in efficiency , just as from anal- ogous causes two animals of the same race differ in expression of type or ...
Página 41
... observation and experience , of the processes of Nature and of man ? The homology throughout Nature sug- gests that the laws of the forces which we call life are analogous to those of the forces that pervade inanimate Nature , and are ...
... observation and experience , of the processes of Nature and of man ? The homology throughout Nature sug- gests that the laws of the forces which we call life are analogous to those of the forces that pervade inanimate Nature , and are ...
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Palavras e frases frequentes
According to Darwin accumulation of beneficial ADAM BEDE antecessor appeared Author beneficial differences Blackwood breeder cattle cessive CHAPTER Cheap Edition Cheaper Church of Scotland CLASSICS FOR ENGLISH cloth colour common-sense conclusions conditions of existence Crown 8vo Darwin Darwinian Demy 8vo disuse domestic animals embryo ence evidence evolution evolved expression of type Fcap force French morocco genera George Eliot germ-cell germ-plasm gilt top growth habits History hybrids hypothesis J. G. Lockhart Jacquard loom JAMES JOHN Lectures less highly specialised limp LL.D loom mammal Maps modification natural selection numerous Illustrations OLIPHANT organisation organs Origin of Species paper cover People's Edition phenomena Philosophy Photogravure physique plant Poems Portrait Post 8vo Prof progeny rock-pigeon Romance royal 8vo Scottish Second Edition Second Impression secondary causes seed selective breeding Specific life-force specific variation struggle for existence successive types successor theory Third Edition tion University of Edinburgh vols whale wild species WILLIAM
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