A New Theory of Organic EvolutionW. Blackwood and Sons, 1903 - 174 páginas |
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Página 5
... forms ; that these simple forms were , in the course of ages , succeeded by numberless varieties of plants and animals , whose organisation , as new types success- ively appeared , became , as a general rule , more and more highly ...
... forms ; that these simple forms were , in the course of ages , succeeded by numberless varieties of plants and animals , whose organisation , as new types success- ively appeared , became , as a general rule , more and more highly ...
Página 6
... species from the first simple forms of life by natural causes , and this theory , after much controversy , became , and is still , widely ac- cepted as the explanation of the phenomena in the evolution 6 A NEW THEORY OF EVOLUTION .
... species from the first simple forms of life by natural causes , and this theory , after much controversy , became , and is still , widely ac- cepted as the explanation of the phenomena in the evolution 6 A NEW THEORY OF EVOLUTION .
Página 9
... forms the specific type . We therefore infer that the Specific life- force of the organism comes from its germ - cell , and , as the germ - cell is the joint product of the progenitors , that Specific life - force is transmitted LIFE . 9.
... forms the specific type . We therefore infer that the Specific life- force of the organism comes from its germ - cell , and , as the germ - cell is the joint product of the progenitors , that Specific life - force is transmitted LIFE . 9.
Página 12
... form , however minute , how- ever apparently accidental , is inconceivable except as the expression of the operation of molecular forces or ' powers ' resident within the organism . And as these forces certainly operate according to ...
... form , however minute , how- ever apparently accidental , is inconceivable except as the expression of the operation of molecular forces or ' powers ' resident within the organism . And as these forces certainly operate according to ...
Página 18
... form , weak in constitution , and frequently infertile . Without an admixture of pure blood mon- grels certainly fail , for one reason or another , to perpetuate their type beyond two or three generations , even although parents and ...
... form , weak in constitution , and frequently infertile . Without an admixture of pure blood mon- grels certainly fail , for one reason or another , to perpetuate their type beyond two or three generations , even although parents and ...
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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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