We have dwelt thus far mainly upon the prominent breeds of cattle known among us, and especially those adapted to the dairy. But a large proportion--by far the largest proportion, indeed--cannot be included under any of the races alluded to. The term breed, properly understood, applies only to animals of the same species, possessing, besides the general characteristics of that species, other characteristics peculiar to themselves, which they owe to the influence of soil, climate, nourishment, and habits of life to which they are subjected, and which they transmit with certainty to their progeny. The characteristics of certain breeds or families are so well marked, that if an individual supposed to belong to any one of them were to produce an offspring not possessing them, or possessing them only in part, with others not belonging to the breed, it would be just ground for suspecting a want of purity of blood. If this definition of the term breed be correct, no grade animals, and no animals not possessing fixed peculiarities or characteristics which they share with all other animals of the class of which they are a type, and which they are capable of transmitting with certainty to their descendants, can be recognized by breeders as belonging to any one distinct race, breed, or family. The term “native,” or “scrub,” is applied to a vast majority of our American cattle, which, though born on the soil, and thus in one sense natives, do not constitute a breed, race, or family, as properly understood by breeders. They do not possess characteristics peculiar to them all, which they transmit with any certainty to their offspring, either of form, size, color, milking or working properties. But, though an animal may be made up of a mixture of blood almost to infinity, it does not follow that for specific purposes, it may not, as an individual animal, be one of the best of the species. And for particular purposes individual animals might be selected from among those commonly called natives in New England, and scrubs at the West and South, equal, and perhaps superior, to any among the races produced by the most skilful breeding. There can be no impropriety in the use of the term “native,” therefore, when it is understood as descriptive of no known breed, but only as applied to the common stock of the country, which does not constitute a breed. But perhaps the whole class of animals commonly called “natives” would be better described as grades, since they are well known to have sprung from a great variety of cattle procured in different places and at different times on the continent of Europe, in England, and in the Spanish West Indies, brought together without any regard to fixed principles of breeding, but only from individual convenience, and by accident.