From CALIFORNIA our intelligence is to the 15th of August, brought by the steamer _Ohio_, which reached New York on the 22d ult. The most important item relates to a deplorable collision which has occurred between persons claiming lands under titles derived from Capt. SUTTER, and others who had taken possession of them and refused to leave. Capt. Sutter held them under his Spanish grant, the validity of which, so far as the territory in question is concerned, is disputed. Attempts to eject the squatters, in accordance with the decision of the courts, were forcibly resisted at Sacramento City on the 14th of August, and a riot was the result, in which several persons on both sides were killed, and others severely wounded. Several hundred were engaged in the fight. As this occurred just upon the eve of the steamer’s departure, the issue of the contest is unknown. There is reason to fear that the difficulties to which it gives rise may not be very soon or very easily settled. Among those killed were Mr. Bigelow, Mayor of Sacramento City, Mr. Woodland, an auctioneer, and Dr. Robinson, the President of the Squatter Association.—The news from the mines continues to be encouraging. In the southern mines the dry season had so far advanced that the Stanislaus and Tuolumne rivers were in good working condition, and yielded good returns. Details are given from the various localities showing that the gold has been by no means exhausted. From the northern mines similar accounts are received.—The total amount received for duties by the Collector at San Francisco from November 12, 1849, to June 30, 1850, was $889,542.—During the passage of the steamer Panama from San Francisco to Panama the cholera broke out, and seventeen of the passengers died. It was induced by excessive indulgence in fruit at Acupulco.—Rev. HORATIO SOUTHGATE D.D., formerly Missionary Bishop at Constantinople, has been chosen Bishop of the Protestant Episcopal Church for the Diocese of California.—In Sonora the difficulties which had broken out in consequence of the tax on foreign miners had been obviated, and order was restored.—Mining operations are prosecuted with the greatest vigor and energy, and were yielding a good return. Companies were formed for carrying on operations more thoroughly than has been usual, and new locations have been discovered which promise to be very fertile. From OREGON there is no news of interest, though our intelligence comes down to the 25th of July. Business was prosperous. Gold is said to have been discovered on Rogue’s river, and companies had been formed to profit by the discovery. A treaty of peace has been negotiated with the Indians by Gov. LANE.