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
... tend to propagate its new and modified form . This fundamental subject of 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 ...
... tend to propagate its new and modified form . This fundamental subject of 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 ...
Page 12
... slightly from each other . The whole organisation seems to have become plastic , and tends to depart in some small degree from that of the parental type . Any variation which is not inherited is unimportant for us 12 СНАР . І. VARIATION.
... slightly from each other . The whole organisation seems to have become plastic , and tends to depart in some small degree from that of the parental type . Any variation which is not inherited is unimportant for us 12 СНАР . І. VARIATION.
Page 14
... tends to appear in the offspring at a corresponding age , though sometimes earlier . In many cases this could not be ... tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to ...
... tends to appear in the offspring at a corresponding age , though sometimes earlier . In many cases this could not be ... tend to appear in the offspring at the same period at which it first appeared in the parent . I believe this rule to ...
Page 41
... tend , perhaps more at one period than at another , as the breed rises or falls in fashion , — perhaps more in one district than in another , according to the state of civilisation of the inhabitants , -slowly to add to the ...
... tend , perhaps more at one period than at another , as the breed rises or falls in fashion , — perhaps more in one district than in another , according to the state of civilisation of the inhabitants , -slowly to add to the ...
Page 57
... tend to obscure this result , that I am surprised that my tables show even a small majority on the side of the larger genera . I will here allude to only two causes of obscurity . Fresh - water and salt - loving plants have generally ...
... tend to obscure this result , that I am surprised that my tables show even a small majority on the side of the larger genera . I will here allude to only two causes of obscurity . Fresh - water and salt - loving plants have generally ...
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Common terms and phrases
accumulated adapted affinities allied species America amount analogous ancient animals appear Asa Gray become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo 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 hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living male mammals manner Marsupials migration modification modified descendants mongrels natural selection naturalists nearly nest occasionally offspring organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor racter ranked reciprocal crosses remarked resemble rudimentary organs seeds Silurian slight South America sterility structure struggle successive supposed tend theory tion variability variations varieties vary whole widely