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 7
... common species vary most -- Species of the larger genera in any country vary more than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally , related to ...
... common species vary most -- Species of the larger genera in any country vary more than the species of the smaller genera - Many of the species of the larger genera resemble varieties in being very closely , but unequally , related to ...
Page 27
... common camel prevented their domestication ? I cannot doubt that if other animals and plants , equal in number to our domesticated productions , and belonging to equally diverse classes and countries , were taken from a state of nature ...
... common camel prevented their domestication ? I cannot doubt that if other animals and plants , equal in number to our domesticated productions , and belonging to equally diverse classes and countries , were taken from a state of nature ...
Page 28
... common wild Indian fowl ( Gallus bankiva ) . In regard to ducks and rabbits , the breeds of which differ considerably from each other in structure , the evidence preponderates in favour of their having all descended from the common wild ...
... common wild Indian fowl ( Gallus bankiva ) . In regard to ducks and rabbits , the breeds of which differ considerably from each other in structure , the evidence preponderates in favour of their having all descended from the common wild ...
Page 30
... common tumbler has the singular in- herited habit of flying at a great height in a compact flock , and tumbling in the air head over heels . The runt is a bird of great size , with long , massive beak and large feet ; some of the sub ...
... common tumbler has the singular in- herited habit of flying at a great height in a compact flock , and tumbling in the air head over heels . The runt is a bird of great size , with long , massive beak and large feet ; some of the sub ...
Page 31
... that the common opinion of naturalists is correct , namely , that all have descended from the rock - pigeon ( Columba livia ) , including under this term several geographical races or sub - species , BO 31 DOMESTIC PIGEONS.
... that the common opinion of naturalists is correct , namely , that all have descended from the rock - pigeon ( Columba livia ) , including under this term several geographical races or sub - species , BO 31 DOMESTIC PIGEONS.
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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