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 124
... accumulated through natural selection , other parts become modified . This is a very important subject , most imperfectly understood . The most obvious case is that modifications accumulated solely for the good of the young or larva ...
... accumulated through natural selection , other parts become modified . This is a very important subject , most imperfectly understood . The most obvious case is that modifications accumulated solely for the good of the young or larva ...
Page 249
... accumulated will have been destroyed by being upraised and brought within the limits of the coast - action . Thus the geological record will almost necessarily be rendered intermittent . I feel much confidence in the truth of these ...
... accumulated will have been destroyed by being upraised and brought within the limits of the coast - action . Thus the geological record will almost necessarily be rendered intermittent . I feel much confidence in the truth of these ...
Page 267
... accumulation of long- enduring fossiliferous formations depends on great masses of sediment having been deposited on areas while subsiding , our formations have been almost necessarily accumulated at wide and irregularly intermittent ...
... accumulation of long- enduring fossiliferous formations depends on great masses of sediment having been deposited on areas while subsiding , our formations have been almost necessarily accumulated at wide and irregularly intermittent ...
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Common terms and phrases
accumulated adapted affinities allied species amount analogous ancient animals 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 domestic doubt eggs embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flower formations 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 occasionally oceanic islands offspring perfect pigeons pistil plants pollen present probably produced progenitor ranked reciprocal crosses remarked resemblance seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder theory tion trees variability variations vary whole widely