. On the origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life [microform]. Evolution; Evolution (Biology); Natural selection; Ãvolution; Darwinisme; Sélection naturelle. ^,;^^^*k Ifti ll!. ;3«;4 ON THE ORIGIN OF SPEfIF> but, if the variation had been a little Kreator, the two varieties would have \teen ranked »s distinrt sppcjes, aiid the .'mrnoii ranee would have l)e»Mi u'rcatlv reduced, .-^till les-* i> it meant, that a sr>e«'ips'" fipparently h,i« the .apncity of crossin? harrier* ind rantrinif widely, a
. On the origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life [microform]. Evolution; Evolution (Biology); Natural selection; Ãvolution; Darwinisme; Sélection naturelle. ^,;^^^*k Ifti ll!. ;3«;4 ON THE ORIGIN OF SPEfIF> but, if the variation had been a little Kreator, the two varieties would have \teen ranked »s distinrt sppcjes, aiid the .'mrnoii ranee would have l)e»Mi u'rcatlv reduced, .-^till les-* i> it meant, that a sr>e«'ips'" fipparently h,i« the .apncity of crossin? harrier* ind rantrinif widely, a« in tlie case of certain powertnlly- wiii^M'd birds, will necessarily range widely ; f.,r we should never fort'et that to rariire widely implies not only thf puvM'r of crossing harriers, hut the m^re im- portint power of hein^ victorious in -iistant lands in the strutrjfle for life with foreiifn .â¢\>sociates. Hut on view of all the species of a ^enus havinsf de- scended from a sinijle parent, thou^jh now distributed fo the most remote points of the world, we ou!?ht to nnd, 9nd I believe as a general rule we do find, that some at least of the species range very widely ; for it H necessary that the unmodified parent should ranj^e widely, underiToinpr modification durinj? its difTusioii, and should place itself under diverse conditions favour- able for the conversion of its offspring, firstly into new ^.iriefie8 and ultimately into new species In considerinji: the wide distribution ot certain c«Mipra, we should hear in mind that some are ex- tremely ancient, and must have branched off from a 'ommon parent at a remote epoch ; so that hi such ase? there will have been ample time for great cli- mata! and geographical clianges and for accidents of tranfii-ort; and consequentlv for the migration of some ot the species into all ([uarters of the world, where they may have Income slightly modified in relation to th»^ir new conditions. There is, also, some
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Keywords: ., boo, bookcentury1900, bookdecade1900, booksubjectnaturalselection
