But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties, which have formerly existed, be truly enormous.
Baina behiala izaniko bitarteko aldakien kopuruak benetan izugarria izan behar du, hain zuzen ere suntsiketa prozesu honek bere arian markatu duen eskala izugarriaren araberakoa.