A New Theory of Organic EvolutionW. Blackwood and Sons, 1903 - 174 páginas |
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Página 9
... principal factors : - The matter or food that goes to build up the organism ; The external conditions necessary for its growth ; and A combination of forces that actuates the general mechanism of the organism , selects and assimilates ...
... principal factors : - The matter or food that goes to build up the organism ; The external conditions necessary for its growth ; and A combination of forces that actuates the general mechanism of the organism , selects and assimilates ...
Página 72
... principal phenomena adduced in port of these conclusions are- sup- The similarity in structure and organisa- tion of successive types . 1 See ' Origin of Species , ' Ed . vi . , p . 421 . The differences among animals of admit- tedly ...
... principal phenomena adduced in port of these conclusions are- sup- The similarity in structure and organisa- tion of successive types . 1 See ' Origin of Species , ' Ed . vi . , p . 421 . The differences among animals of admit- tedly ...
Página 98
... principal factor in the theory of natural selection . Beneficial differences , originally small , accumulating through numberless genera- tions , became specific variations , and thus new species arose , — so Darwin argues plausibly ...
... principal factor in the theory of natural selection . Beneficial differences , originally small , accumulating through numberless genera- tions , became specific variations , and thus new species arose , — so Darwin argues plausibly ...
Página 134
... , although they may be seen feeding on the floating débris brought to the surface by closely allied breeds that seek their food under water . CHAPTER XI . EXTERNAL INFLUENCES . THE three principal factors 134 A NEW THEORY OF EVOLUTION .
... , although they may be seen feeding on the floating débris brought to the surface by closely allied breeds that seek their food under water . CHAPTER XI . EXTERNAL INFLUENCES . THE three principal factors 134 A NEW THEORY OF EVOLUTION .
Página 135
James W. Barclay. CHAPTER XI . EXTERNAL INFLUENCES . THE three principal factors in producing an organism life - force , matter , and environ- ment - vary in their respective potencies in different races , and among individuals of the ...
James W. Barclay. CHAPTER XI . EXTERNAL INFLUENCES . THE three principal factors in producing an organism life - force , matter , and environ- ment - vary in their respective potencies in different races , and among individuals of the ...
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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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