Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan, 1912 - 494 pages |
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Page 7
... surface and of the conditions of life at those remote periods is very great ; thousands of animals and plants must have existed of which we have no record ; while we are usually without any information as to the habits and general life ...
... surface and of the conditions of life at those remote periods is very great ; thousands of animals and plants must have existed of which we have no record ; while we are usually without any information as to the habits and general life ...
Page 15
... surface of the ground with two or three different kinds , will themselves be supplanted by others , so that in a few years many of the original flowers and of the earliest weeds may alike have disappeared . This is one of the very ...
... surface of the ground with two or three different kinds , will themselves be supplanted by others , so that in a few years many of the original flowers and of the earliest weeds may alike have disappeared . This is one of the very ...
Page 43
... surface of the column , while the colour varies enormously in a great number of the species . Similar variations occur in all the various groups of marine invertebrata , and in the great sub - kingdom of the mollusca they are especially ...
... surface of the column , while the colour varies enormously in a great number of the species . Similar variations occur in all the various groups of marine invertebrata , and in the great sub - kingdom of the mollusca they are especially ...
Page 78
... surface being pubescent or smooth ; ( 7 ) the perianth varies in depth and lobing ; ( 8 ) the stamens vary in number , independently ; ( 9 ) the anthers are mucronate or blunt ; ( 10 ) the fruit stalks vary greatly in length , often as ...
... surface being pubescent or smooth ; ( 7 ) the perianth varies in depth and lobing ; ( 8 ) the stamens vary in number , independently ; ( 9 ) the anthers are mucronate or blunt ; ( 10 ) the fruit stalks vary greatly in length , often as ...
Page 79
... surface , some specimens are a full pink , while others have a decided bluish tinge . Mr. Darwin states that he carefully examined a large number of plants of Geranium phæum and G. pyrenaicum ( not perhaps truly British but frequently ...
... surface , some specimens are a full pink , while others have a decided bluish tinge . Mr. Darwin states that he carefully examined a large number of plants of Geranium phæum and G. pyrenaicum ( not perhaps truly British but frequently ...
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Common terms and phrases
abundant adapted adduced allied species America amount animals and plants appears birds breed brilliant butterflies carnivora cause characters climate closely allied colours of animals common conspicuous continued cross-fertilisation crossed curious Darwin dicotyledons distinct species domestic animals effects eggs Eocene evidence explained extinct facts faculty favourable female fertile fertilisation flowers genera genus geological groups habits hybrids important increase individuals infertility inhabit insects intercrossing kind large number larvæ less living male mammalia mammals markings marsupials mimicry Miocene mode modified moths natural selection naturalists nests occur offspring organs Origin of Species peculiar pigeons Pliocene pollen portion possess probably produced Professor proportion protectively coloured pupa regions remarkable resemblance seeds self-fertilisation Silurian specimens spots sterility structure struggle for existence supposed surface tail theory tints tion toes trees tropical usually variability variation varied varieties vegetation warning colours whole wild wings Zealand