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 9
... intermediate varieties at the present day - On the nature of extinct intermediate varieties ; on their number- 73 — A * On the vast lapse of time , as inferred from CONTENTS 9.
... intermediate varieties at the present day - On the nature of extinct intermediate varieties ; on their number- 73 — A * On the vast lapse of time , as inferred from CONTENTS 9.
Page 10
... intermediate varieties in any one formation - On the sudden appearance of groups of species - On their sudden appearance in the lowest known fossiliferous strata 245 CHAPTER X ON THE GEOLOGICAL SUCCESSION OF ORGANIC BEINGS On the slow ...
... intermediate varieties in any one formation - On the sudden appearance of groups of species - On their sudden appearance in the lowest known fossiliferous strata 245 CHAPTER X ON THE GEOLOGICAL SUCCESSION OF ORGANIC BEINGS On the slow ...
Page 29
... intermediate between their parents ; and if we account for our several domestic races by this process , we must admit the former existence of the most extreme forms , as the Italian greyhound , ] bloodhound , bull - dog , & c . , in the ...
... intermediate between their parents ; and if we account for our several domestic races by this process , we must admit the former existence of the most extreme forms , as the Italian greyhound , ] bloodhound , bull - dog , & c . , in the ...
Page 37
... intermediate links in the long lines of descent , yet admit that many of our domestic races have descended from the same parents may they not learn a lesson of caution , when they deride the idea of species in a state of nature being ...
... intermediate links in the long lines of descent , yet admit that many of our domestic races have descended from the same parents may they not learn a lesson of caution , when they deride the idea of species in a state of nature being ...
Page 52
... intermediate gradations , that naturalists do not like to rank them as distinct species , are in several respects the most important for us . We have every reason to believe that many of these doubtful and closely - allied forms have ...
... intermediate gradations , that naturalists do not like to rank them as distinct species , are in several respects the most important for us . We have every reason to believe that many of these doubtful and closely - allied forms have ...
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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