The Life and Letters of George John Romanes ...Longmans, Green and Company, 1896 - 391 pages |
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Page 118
... origin of the instinct may have been determined or assisted by the mere anatomical form of the animals - the wasp not stinging till securely mounted on the spider's back , and when so mounted the sting might naturally strike the ...
... origin of the instinct may have been determined or assisted by the mere anatomical form of the animals - the wasp not stinging till securely mounted on the spider's back , and when so mounted the sting might naturally strike the ...
Page 171
... origin of species . ' This paper was the outcome of many years ' study of the philosophy of evolution , during which time he had gradually been coming to the conclusion that natural selection cannot be regarded as the sole guiding ...
... origin of species . ' This paper was the outcome of many years ' study of the philosophy of evolution , during which time he had gradually been coming to the conclusion that natural selection cannot be regarded as the sole guiding ...
Page 172
... origin and cumulative development of adaptations , whether these be distinctive of species , or of genera , families , classes , & c . The question then arises , do species differ from species solely in points of a useful character , as ...
... origin and cumulative development of adaptations , whether these be distinctive of species , or of genera , families , classes , & c . The question then arises , do species differ from species solely in points of a useful character , as ...
Page 174
... origin of species is the arising of this infertility as an independent variation , by which free intercrossing with the parent form on a common area is prevented , and specific differentiation rendered possible . Innumerable varieties ...
... origin of species is the arising of this infertility as an independent variation , by which free intercrossing with the parent form on a common area is prevented , and specific differentiation rendered possible . Innumerable varieties ...
Page 177
... Origin , ' pp . 245-246 ; Variation , ' ii . pp . 171-175 . ) Now , if this view be sound , my theory is obviously not restricted to any one class of causes that may induce mutual sterility . Such cases may be either extrinsic or ...
... Origin , ' pp . 245-246 ; Variation , ' ii . pp . 171-175 . ) Now , if this view be sound , my theory is obviously not restricted to any one class of causes that may induce mutual sterility . Such cases may be either extrinsic or ...
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18 Cornwall Terrace able Aldate's Animal Intelligence animals answer asked Athenæum Club Aubrey Moore believe Cambridge causes character Charles Darwin Christ Church course Darwin dear doubt Dunskaith essay experiments fact feel Francis Darwin friends G. J. ROMANES Geanies gemmules GEORGE JOHN ROMANES George Romanes give glad graft hear hope Huxley hybrid intercrossing interesting isolation jelly-fish kind lecture letter light look Medusa ment Mental Evolution mind Miss C. E. Romanes natural selection never observed organism origin Oxford Paget Pangenesis paper physiological selection plants polypite Professor published question regards Regent's Park Romanes Lecture Ross-shire Royal Society Sanderson scientific seeds seems self-adaptation sent sexual sincerely sonnet sorry species sterility suppose tell thanks theory thing thought tion tissue to-day variations Victor Horsley Weismann write written wrote yesterday