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 5
... increase - Rapid increase of naturalised animals and plants - Nature of the checks to increase - Competition universal - Effects of climate - Protection from the num- ber of individuals - Complex relations of all animals and plants ...
... increase - Rapid increase of naturalised animals and plants - Nature of the checks to increase - Competition universal - Effects of climate - Protection from the num- ber of individuals - Complex relations of all animals and plants ...
Page 12
... increase , will be treated of . This is the doctrine of Malthus , applied to the whole animal and vegetable kingdoms . As many more individuals of each species are born than can pos- sibly survive ; and as , consequently , there is a ...
... increase , will be treated of . This is the doctrine of Malthus , applied to the whole animal and vegetable kingdoms . As many more individuals of each species are born than can pos- sibly survive ; and as , consequently , there is a ...
Page 17
... increased size from amount of food , colour from particular kinds of food and from light , and perhaps the thickness of fur from climate . Habit also has a decided influence , as in the period of flowering with plants when transported ...
... increased size from amount of food , colour from particular kinds of food and from light , and perhaps the thickness of fur from climate . Habit also has a decided influence , as in the period of flowering with plants when transported ...
Page 35
... , in which exact records have been kept ; thus , to give a very trifling instance , the steadily increasing size of the common goɑse • berry may be quoted . We see an astonishing improve- СПАР . І. ] 35 SELECTION BY MAN .
... , in which exact records have been kept ; thus , to give a very trifling instance , the steadily increasing size of the common goɑse • berry may be quoted . We see an astonishing improve- СПАР . І. ] 35 SELECTION BY MAN .
Page 38
... increased in weight and in early maturity , compared with the stock formerly kept in this country . By com paring the accounts given in old pigeon treatises of car riers and tumblers with these breeds as now existing in Britain , India ...
... increased in weight and in early maturity , compared with the stock formerly kept in this country . By com paring the accounts given in old pigeon treatises of car riers and tumblers with these breeds as now existing in Britain , India ...
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Common terms and phrases
accumulated adapted affinities allied species America amount ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species disuse divergence domestic doubt embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living look male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring organic organisation perfect pigeons pistil plants pollen present probably produced progenitor ranked reciprocal crosses remarked resemble rudimentary seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder tend theory tion trees variability variation varieties vary whole widely