Horses, Cattle, Sheep and Swine - open to competition to all the States of the Union, and to the British Provinces, will be held by the United States Agricultural Society, in the city of Boston, on Tuesday, Wednesday, Thursday and Friday, October 28rd, 24th, 26th, and 26th.

Twenty-thousand dollars have been guaranteed by patriotic gentlemen of Boston sad its vicinity to defray the expenses; the city of Boston has generously granted to the Society for present use, a fine public square of fifty acres; and ten thousand dollars will be offered in Premiums in various departments.

The previous Exhibitions of this Society - at Springfield, Mass., in 1853, and at Springfield, Ohio, in 1854 - were eminently successful, and no efforts will be spared to make the present Show, combining as it does, the Four Great Departments of Farming Stock, superior to its predecessors.

The Premium List, with the Rules of Exhibition will be forwarded to all who will address the President, or Secretary, at Boston, to that effect.

It is earnestly hoped that all Breeders, and owners of Fine Stock will feel it to be a duty, as it certainly is for their interest, to contribute to the Show.

The List of Entries, Exhibitors and Award of Premiums, and all the proceedings of the Exhibition, will be published in the Journal of the Society, for 1855. Annual members of the Society who desire to receive the Journal, should remember to renew their subscriptions.

William S. King, Secretary. Marshall P. Wilder, President.