Bennett of New York, and is regarded as important, inasmuch as it secures to the old States a much larger participation in the public lands than they have hitherto seemed likely to obtain. A National Agricultural Convention was held at Washington on the 24th of June, of which Marshall Wilder of Massachusetts was elected President. It was decided to form a National Agricultural Society, to hold yearly meetings at Washington.----The Supreme Court in New York on the 11th of June pronounced a judgment, by a majority, declaring the American Art-Union to be a lottery within the prohibition of the Constitution of the State, and that it was therefore illegal. An appeal has been taken by the Managers to the Court of Appeals, where it has been argued, but no decision has yet been given.----Madame Alboni, the celebrated contralto singer, arrived in New York early in June and has given two successful concerts.----Governor Kossuth delivered an address in New York on the 21st of June upon the future of nations, insisting that it was the duty of the United States to establish, what the world has not yet seen, a national policy resting upon Christian principles as its basis. He urged the cause of his country upon public attention, and declared his mission to the United States to be closed. On the 23d he delivered a farewell address to the German citizens of New York, in which he spoke at length of the relations of Germany to the cause of European freedom and of the duty of the German citizens of the United States to exert an influence upon the American government favorable to the protection of liberty throughout the world. It is stated that his aggregate receipts of money in this country have been somewhat less than one hundred thousand dollars.