A New Theory of Organic EvolutionW. Blackwood and Sons, 1903 - 174 páginas |
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Página 2
... DARWIN'S EXAMPLES OF SPECIFIC VARIATION 123 · X. USE OR DISUSE OF PARTS AND ADAPTATIONS OF ORGANS • · 129 XI . EXTERNAL INFLUENCES 135 XII . INSTINCT AND HABIT 143 · XIII . DOMESTIC ANIMALS 150 · XIV . NATURAL SELECTION OF SPECIES 160 ...
... DARWIN'S EXAMPLES OF SPECIFIC VARIATION 123 · X. USE OR DISUSE OF PARTS AND ADAPTATIONS OF ORGANS • · 129 XI . EXTERNAL INFLUENCES 135 XII . INSTINCT AND HABIT 143 · XIII . DOMESTIC ANIMALS 150 · XIV . NATURAL SELECTION OF SPECIES 160 ...
Página 6
... Darwin , NATURAL SELECTION was the means by which evolution was brought about . Evol- ution is thus quite distinct from natural selection . Evolution is an accepted fact , but it is denied that evolution was brought about by natural ...
... Darwin , NATURAL SELECTION was the means by which evolution was brought about . Evol- ution is thus quite distinct from natural selection . Evolution is an accepted fact , but it is denied that evolution was brought about by natural ...
Página 7
... Darwin did not formulate his theory , but after setting forth at great length the facts and considerations on which his conclusions were based , declared himself to be thoroughly convinced that all animals and plants were descended from ...
... Darwin did not formulate his theory , but after setting forth at great length the facts and considerations on which his conclusions were based , declared himself to be thoroughly convinced that all animals and plants were descended from ...
Página 18
... Darwin was fully aware of the infertil- ity of hybrids , both of animals and plants , but does not seem to have fully realised its significance in evolution . " fre- " The embryo of hybrids , " he 18 CROSS-BREEDING AND ITS RESULTS.
... Darwin was fully aware of the infertil- ity of hybrids , both of animals and plants , but does not seem to have fully realised its significance in evolution . " fre- " The embryo of hybrids , " he 18 CROSS-BREEDING AND ITS RESULTS.
Página 50
... Darwinism , should be continuous in the embryo , do not appear in the embryonic development of some animals ; for example , why the embryo of some snakes shows the gill - clefts of a fish , but no trace of the fore - limbs of an ...
... Darwinism , should be continuous in the embryo , do not appear in the embryonic development of some animals ; for example , why the embryo of some snakes shows the gill - clefts of a fish , but no trace of the fore - limbs of an ...
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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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