On the Origin of the Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 17
... ranked by some competent judges as the descendants of aboriginally distinct species , and by other competent judges as mere varieties . If any well marked distinction existed between a domestic race and a species , this source of doubt ...
... ranked by some competent judges as the descendants of aboriginally distinct species , and by other competent judges as mere varieties . If any well marked distinction existed between a domestic race and a species , this source of doubt ...
Page 24
... ranked by him as well - defined species . Moreover , I do not believe that any ornithologist would place the English carrier , the short - faced tumbler , the runt , the barb , pouter , and fantail in the same genus ; more espe- cially ...
... ranked by him as well - defined species . Moreover , I do not believe that any ornithologist would place the English carrier , the short - faced tumbler , the runt , the barb , pouter , and fantail in the same genus ; more espe- cially ...
Page 39
... ranked at their first appearance as distinct varieties , and whether or not two or more species or races have be- come blended together by crossing , may plainly be recognised in the increased size and beauty which we now see in the ...
... ranked at their first appearance as distinct varieties , and whether or not two or more species or races have be- come blended together by crossing , may plainly be recognised in the increased size and beauty which we now see in the ...
Page 54
... ranked as a variety of another , not because the intermediate links have actually been found , but because analogy leads the observer to suppose either that they do now somewhere exist , or may formerly have existed ; and here a wide ...
... ranked as a variety of another , not because the intermediate links have actually been found , but because analogy leads the observer to suppose either that they do now somewhere exist , or may formerly have existed ; and here a wide ...
Page 55
... ranked as species by at least some com- petent judges . That varieties of this doubtful nature are far from uncommon cannot be disputed . Compare the several floras of Great Britain , of France , or of the United States , drawn up by ...
... ranked as species by at least some com- petent judges . That varieties of this doubtful nature are far from uncommon cannot be disputed . Compare the several floras of Great Britain , of France , or of the United States , drawn up by ...
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Common terms and phrases
accumulated adapted admit affinities allied species America analogous ancient appear archipelago Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common continuous crossed crustaceans degree developed difficulty distinct species divergence doubt eggs embryo existing exterminated extinct extremely facts favourable females fertilised fertility flowers formation forms fossil Fritz Müller Gärtner genera genus geological Glacial period gradations greater number groups of species habits Hence hermaphrodites hive-bee hybrids important individuals inhabitants inherited insects instance instincts intercrossing larvæ less living males mammals manner migration modified descendants natural selection naturalists nearly nest occasionally occur oceanic islands offspring organisation parent perfect pigeons pistil pollen present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble rudimentary organs seeds sexual sexual selection Silurian slight South America stamens sterility structure struggle successive suppose theory tion variability variations vary whilst whole