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 173
... reason leads us to admire with enthusiasm a multitude of inimitable contrivances in nature , this same reason tells us , though we may easily err on both sides , that some other contrivances are less perfect . Can we consider the sting ...
... reason leads us to admire with enthusiasm a multitude of inimitable contrivances in nature , this same reason tells us , though we may easily err on both sides , that some other contrivances are less perfect . Can we consider the sting ...
Page 217
... reason to believe that the hybrids from Cervulus vaginalis and Reevesii , and from Phasianus colchicus with P. torquatus and with P. versicolor are perfectly fertile . The hybrids from the common and Chinese geese ( A. cygnoides ) ...
... reason to believe that the hybrids from Cervulus vaginalis and Reevesii , and from Phasianus colchicus with P. torquatus and with P. versicolor are perfectly fertile . The hybrids from the common and Chinese geese ( A. cygnoides ) ...
Page 266
... reason to believe that organisms , considered high in the scale of nature , change more quickly than those that are low : though there are exceptions to this rule . The amount of organic change , as Pictet has remarked , does not ...
... reason to believe that organisms , considered high in the scale of nature , change more quickly than those that are low : though there are exceptions to this rule . The amount of organic change , as Pictet has remarked , does not ...
Contents
INTRODUCTION | 1 |
STRUGGLE FOR EXISTENCE | 52 |
NATURAL SELECTION | 69 |
Copyright | |
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Common terms and phrases
accumulated adapted affinities allied species amount analogous ancient appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distant distinct species divergence doubt embryo Europe existing exterminated extinct extremely facts favourable fertility flowers formation forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important increase in number individuals inhabitants inherited insects instance instincts intercrossing land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest occasional oceanic islands offspring Origin of Species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemblance seeds sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory tion trees variability variation vary whole widely