if, for instance, it could be shown that the greyhound, bloodhound, terrier, spaniel and bull-dog, which we all know propagate their kind truly, were the offspring of any single species, then such facts would have great weight in making us doubt about the immutability of the many closely allied natural species-for instance, of the many foxes-inhabiting the different quarters of the world.
baldin eta, adibidez, frogatu ahal balitz xarlangoa, ehizatxakurra, terrierra, spaniela, bull-doga, guztiok dakigunez beren arrazaren aldaketarik gabe ugaltzen direnak, espezie bakar beraren ondorengoak direla, egitateok indar handia lukete munduko herrialde askotan bizi eta ugari diren espezie natural antz-antzekoen-esate baterako, hain askotarikoak diren azerien-aldagaiztasunaz dudarazteko.