On the Origin of Species by Means of Natural Selection |
From inside the book
Results 1-5 of 67
Page x
... nance - their existence would seem to show that the amount of modification which living beings have under- gone during geological time is but very small in relation -- to the whole series of changes which they have suf X PREFACE .
... nance - their existence would seem to show that the amount of modification which living beings have under- gone during geological time is but very small in relation -- to the whole series of changes which they have suf X PREFACE .
Page 11
... amount of hereditary modification is at least possible ; and , what is equally or more important , we shall see how great is the power of uan in accumulating by his Selection successive slight variations . I will then pass on to the ...
... amount of hereditary modification is at least possible ; and , what is equally or more important , we shall see how great is the power of uan in accumulating by his Selection successive slight variations . I will then pass on to the ...
Page 14
... amount of variation ; and that when the organ- isation has once begun to vary , it generally continues to vary for many generations . No case is on record of a variable being ceasing to be variable under cultivation . Our oldest ...
... amount of variation ; and that when the organ- isation has once begun to vary , it generally continues to vary for many generations . No case is on record of a variable being ceasing to be variable under cultivation . Our oldest ...
Page 17
... amount of change may , I think , be attributed to the direct action of the conditions of life - as , in some cases , increased size from amount of food , colour from particular kinds of food and from light , and perhaps the thickness of ...
... amount of change may , I think , be attributed to the direct action of the conditions of life - as , in some cases , increased size from amount of food , colour from particular kinds of food and from light , and perhaps the thickness of ...
Page 22
... amount of structural difference between the domestic races of the same species , we are soon involved in doubt , from not knowing whether they have descended from one or several parent - species . This point , if it could be cleared up ...
... amount of structural difference between the domestic races of the same species , we are soon involved in doubt , from not knowing whether they have descended from one or several parent - species . This point , if it could be cleared up ...
Other editions - View all
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 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 principle 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