The second mode is somewhat more feasible; and that is, to select animals from races already improved and well-nigh perfected, to cross with our cattle, using none but good specimens of pure-bred males, and selecting, if our object is to improve stock for the dairy, only such as belong to a race distinguished for dairy qualities; or, if resort is had to other breeds less remarkable for such qualities, such only as are descended from large and generous milkers. And here it may be remarked that these qualities do not belong to any one breed exclusively, though, as they depend mainly on structure and temperament, which are hereditary to a considerable extent, they are themselves transmissible. In almost every breed we can find individual good milkers which greatly surpass the average of the cows of the same race or family, and from such many suppose that good crosses may be expected. How often do we see farmers raising the calves of their best milking-cows simply because they are the best cows, without regard to the qualities of the bull, or to the progenitors of either parent; and how often are they disappointed, at the end of three or four years of labor and expense! Now, though a cow of a bad milking family, or of a breed not at all distinguished for dairy qualities, may turn out to be an excellent milker, and all else that may be desirable in a cow, yet these qualities in her are accidental. They are not supposed to be transmissible with anything like the certainty which exists where they are the fixed and constant characteristics of the family. She is an exception to the rule of her race. A good calf from her, though not, of course, an impossibility, would be very much the result of chance. The resort to any but a distinguished breed of milkers cannot, therefore, be recommended, nor can we expect to improve our dairies by it. A disregard of this important matter has led to endless disappointment, and has done much to raise up unjust prejudices against the use of all improved stock on our native cows. As if we could expect nature to go out of her regular course to give us a good animal, when we have violated her laws!