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 6-10 of 86
Page 101
... living fossils ; they have endured to the present day , from having inhabited a confined area , and from having thus been exposed to less severe competition . To sum up the circumstances favourable and unfavour- able to natural ...
... living fossils ; they have endured to the present day , from having inhabited a confined area , and from having thus been exposed to less severe competition . To sum up the circumstances favourable and unfavour- able to natural ...
Page 106
... living on the same piece of ground . And we well know that each species and each variety of grass is annually sowing almost countless seeds ; and thus , as it may be said , is striving its utmost to increase its numbers . Consequently ...
... living on the same piece of ground . And we well know that each species and each variety of grass is annually sowing almost countless seeds ; and thus , as it may be said , is striving its utmost to increase its numbers . Consequently ...
Page 115
... living , yet are often , in some degree , intermediate in character between existing groups ; and we can understand this fact , for the extinct species lived at very ancient epochs when the branching lines of descent had diverged less ...
... living , yet are often , in some degree , intermediate in character between existing groups ; and we can understand this fact , for the extinct species lived at very ancient epochs when the branching lines of descent had diverged less ...
Page 116
... no modified descendants ; and consequently that of the species living at any one period , extremely few will transmit descendants to a remote futurity . I shall have to return to this subject in the chapter on 116 NATURAL SELECTION.
... no modified descendants ; and consequently that of the species living at any one period , extremely few will transmit descendants to a remote futurity . I shall have to return to this subject in the chapter on 116 NATURAL SELECTION.
Page 117
... living and modified descendants , yet at the most remote geological period , the earth may have been as well peopled with many species of many genera , families , orders , and classes , as at the present day . On the degree to which ...
... living and modified descendants , yet at the most remote geological period , the earth may have been as well peopled with many species of many genera , families , orders , and classes , as at the present day . On the degree to which ...
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