the chances in this case will be strongly in favour of the great holders on the mountains or on the plains improving their breeds more quickly than the small holders on the intermediate narrow, hilly tract; and consequently the improved mountain or plain breed will soon take the place of the less improved hill breed; and thus the two breeds, which originally existed in greater numbers, will come into close contact with each other, without the interposition of the supplanted, intermediate hill variety.
kasu honetan ahalbideak mendi eta lautadetako ardijabeen oso alde egonen dira, hauek beren arrazak bitarteko herrialde aldapatsuetakoek baino azkarrago hobetzen dituztelako eta, beraz, mendi edo lautadako arraza hobetuak laster hartuko du mazelako arraza gutxiago hobetuaren lekua; eta, horretara, hasieran ugariak ziren arraza biak elkarrekin harreman estuan jartzera helduko dira, mazelako bitarteko aldaki ordezkatuaren tartekatzerik gabe.