So that we are reduced to consider whether the exceptions to continuity of range are so numerous, and of so grave a nature, that we ought to give up the belief, rendered probable by general considerations, that each species has been produced within one area, and has migrated thence as far as it could.
Beraz, pentsatu beharrean aurkitzen gara ea eremuaren etengabetasunean gertatzen diren salbuespenak hain ugari eta garrantzizkoak diren, eta horren kariaz bertan behera utzi behar ote dugun gogoramen orokorrek gertagarritzat aurkezten diguten eritzia, alegia, espezie bakoitza eskualde bakar batean sortu eta gero handik ahal izan duen tokiraino migratu dela.