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 4
... In the next chapter the Struggle for Existence amongst all organic beings throughout the world , which inevi- tably follows from the high geometrical ratio of their increase , will be treated of . This is the 4 INTRODUCTION .
... In the next chapter the Struggle for Existence amongst all organic beings throughout the world , which inevi- tably follows from the high geometrical ratio of their increase , will be treated of . This is the 4 INTRODUCTION .
Page 5
... follows that any being , if it vary however slightly in any manner profitable to itself , under the complex and sometimes varying conditions of life , will have a better chance of surviving , and thus be naturally selected . From the ...
... follows that any being , if it vary however slightly in any manner profitable to itself , under the complex and sometimes varying conditions of life , will have a better chance of surviving , and thus be naturally selected . From the ...
Page 31
... follow it as a trade : the sheep are placed on a table and are studied , like a picture by a connoisseur ; this is done three times at intervals of months , and the sheep are each time marked and classed , so that the very best may ...
... follow it as a trade : the sheep are placed on a table and are studied , like a picture by a connoisseur ; this is done three times at intervals of months , and the sheep are each time marked and classed , so that the very best may ...
Page 47
... follow . We must , however , in many cases , decide by a majority of naturalists , for few well- marked and well - known varieties can be named which have not been ranked as species by at least some com- petent judges . That varieties ...
... follow . We must , however , in many cases , decide by a majority of naturalists , for few well- marked and well - known varieties can be named which have not been ranked as species by at least some com- petent judges . That varieties ...
Page 55
... follow when another division is made , and when all the smallest genera , with from only one to four spe- cies , are absolutely excluded from the tables . These facts are of plain signification on the view that species CHAP . II ...
... follow when another division is made , and when all the smallest genera , with from only one to four spe- cies , are absolutely excluded from the tables . These facts are of plain signification on the view that species CHAP . II ...
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap 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 less living male mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest oceanic islands offspring organisation perfect pigeons plants pollen present probably produced progenitor racters ranked reciprocal crosses remarked resemble rock-pigeon rudimentary organs seeds sexual selection Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely