Of the ten cows entered for the premium as _native_ animals, nearly or all have an intermixture of Short-Horn or other foreign blood. We awarded to Mr. Minor Hitchcock the first premium in this class. In his written statement to us it appears that her average product in milk for the six months, ending 1st October, was 49 lbs. per day, and in the months of June and July, 58 lbs. per day. In butter, her average product in the same time was more than 11 lbs. per week, and in the month of July alone, nearly 14 lbs. per week; yet in the same time he used the necessary milk and cream for his family of four persons. Your committee have entire confidence in the statement of Mr. Hitchcock; yet it is proper here to remark, that from his account of her, and though awarded, a premium as a native animal, she partakes highly of the blood of the Short-Horns. In the two classes of animals entered as of _native and foreign origin_ it is obvious that a proper discrimination was not made; for in some of the former there is evidently more of the blood of distinct imported races than the latter. Yet your committee deemed it their duty to award the premiums of the society to the two classes as they found them. Now here it is, most everywhere that our native cows are found excelling as milkers, we can trace a portion of their blood, (usually the greatest share,) to the Durhams, and yet there are those who are constantly decrying the Short-Horns for not being _milkers_. Verily a few particular people are very hard to be convinced. It is our intention hereafter to make up a table of the milking qualities of the Short-Horns and their grades, and any one possessing information upon this subject, we shall be glad by their communicating the same to us. Mr. Paoli Lathrop of South Hadley took the first premiums on Durham bulls and heifers. Mr. Ira Fenton of Belchertown on Durham cows. Mr. Sumner Chapin of Springfield, the first premiums on Fat Cattle and Working-Oxen. SALE OF RAMBOUILLET MERINOS. --Mr. Nathaniel Hart, Jr., of Kentucky, has just passed through this city on his way home, having in company with him three Rambouillet Merino bucks, purchased of Mr. D. C. Collins of Hartford, Connecticut. Mr. Hart has kept a large flock of the old-fashioned Merinos for some time, on his plantation at Versailles, Woodford county, and has purchased these fine bucks, as the best animals which could be found, for the purpose of making improvements upon them. Kentucky will have in these Rambouillets a valuable addition to her sheep stock, and we recommend their produce in advance, to the breeders of the western country. We understand Mr. Collins has recently met with a great demand for his sheep, and that he has now disposed of all he has to spare this year. We congratulate him upon it, and take some credit to ourselves, for calling public attention to his very valuable imported flock. SHEEP-DOGS.