On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
From inside the book
Results 1-5 of 91
Page 7
... increase - Rapid increase of naturalised animals and plants - Nature of the checks to increase - Com- petition universal - Effects of Climate - Protection from the number of individuals - Complex relations of all animals and 7 61 plants ...
... increase - Rapid increase of naturalised animals and plants - Nature of the checks to increase - Com- petition universal - Effects of Climate - Protection from the number of individuals - Complex relations of all animals and 7 61 plants ...
Page 15
... - tably follows from the high geometrical ratio of their 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 INTRODUCTION 15.
... - tably follows from the high geometrical ratio of their 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 INTRODUCTION 15.
Page 22
... increased size from amount of food , colour from particular kinds of food , and perhaps the thickness of fur from climate . ( Habit also has a decided influence , as in the period of flowering with plants when transported from one ...
... increased size from amount of food , colour from particular kinds of food , and perhaps the thickness of fur from climate . ( Habit also has a decided influence , as in the period of flowering with plants when transported from one ...
Page 39
... increasing size of the common gooseberry may be quoted . We see an astonishing improvement in many florists ' flowers , when the flowers of the present day are compared with drawings made only twenty or thirty years ago . When a race of ...
... increasing size of the common gooseberry may be quoted . We see an astonishing improvement in many florists ' flowers , when the flowers of the present day are compared with drawings made only twenty or thirty years ago . When a race of ...
Page 42
... increased in weight and in early maturity , compared with the stock formerly kept in this country . By comparing the accounts given in old pigeon treatises of carriers 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 comparing the accounts given in old pigeon treatises of carriers and tumblers with these breeds as now existing in Britain , India ...
Other editions - View all
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