On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 7
... natural selection - The term used in a wide sense- Geometrical ratio of increase - Rapid increase of naturalised animals and plants - Nature of the checks to increase - Com- petition universal - Effects of Climate - Protection from the ...
... natural selection - The term used in a wide sense- Geometrical ratio of increase - Rapid increase of naturalised animals and plants - Nature of the checks to increase - Com- petition universal - Effects of Climate - Protection from the ...
Page 8
... NATURAL SELECTION Natural Selection - its power compared with man's selection - its power on characters of trifling importance - its power at all ages and on both sexes - Sexual Selection - On the generality of inter- crosses between ...
... NATURAL SELECTION Natural Selection - its power compared with man's selection - its power on characters of trifling importance - its power at all ages and on both sexes - Sexual Selection - On the generality of inter- crosses between ...
Page 9
... Natural Selection 160 CHAPTER VII INSTINCT Instincts comparable with habits , but different in their origin- Instincts graduated - Aphides and ants - Instincts variable— Domestic instincts , their origin - Natural instincts of the ...
... Natural Selection 160 CHAPTER VII INSTINCT Instincts comparable with habits , but different in their origin- Instincts graduated - Aphides and ants - Instincts variable— Domestic instincts , their origin - Natural instincts of the ...
Page 16
... Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection almost inevitably causes much Extinction of the less improved forms of life , and leads to what I have called ...
... Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection almost inevitably causes much Extinction of the less improved forms of life , and leads to what I have called ...
Page 26
... natural selection , as will hereafter be explained , will determine how far the new characters thus arising shall be preserved . ] When we look to the hereditary varieties or races of our domestic animals and plants , and compare them ...
... natural selection , as will hereafter be explained , will determine how far the new characters thus arising shall be preserved . ] When we look to the hereditary varieties or races of our domestic animals and plants , and compare them ...
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Common terms and phrases
accumulated adapted affinities allied species America analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic existing exterminated extinct extremely facts favourable fertilised fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ laws less living males mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organic organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary seeds sexual sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory variability variations varieties vary whole widely