The vessels on the coast, and ranging from San Pedro on the south to Southern Oregon, and at distances varying from eight to one hundred miles from land, did not experience any shock. They were twenty-two in number. Up to the present date the most northern point of which we have any record of its having been felt, is at Santa Rosa, which is fifty-three miles north of San Francisco, and at Monterey, ninety miles south of the latter place; to the east of this city we have no record beyond Stockton. This would give for its length one hundred and forty-three miles, and its breadth sixty-six miles. Inquiry was made through the State line Telegraph at El Dorado, Nevada, Downieville, Placerville, Marysville, Sacramento, Stockton, and San José; it was not felt in any of the localities named, excepting the two last, and at Stockton it was quite light. If the time as given at Monterey was the same as at this city (San Francisco), the velocity of the earth-wave must have been much slower than that of the great earthquake at Simoda. March 24th, 22h. 20m.—A slight shock was felt at Canal Gulch, Siskiyou County, also at Yreka. The motion is described as being horizontal. March 31st, 13h. 25m.—A light shock was felt in San Francisco. It consisted of three light but distinct tremors. April 6th, 23h. 30m.—A smart shock was felt at Los Angeles and the Monte, people were aroused from their beds. May 10th, 21h. 10m.—A light shock was felt in San Francisco. The shock was accompanied by a loud report, like the discharge of a cannon; people mistook it for the signal gun of the mail steamer. This was felt at Monterey, and in Contra Costa County. May 2d, 0h. 10m.—A severe shock was felt at Los Angeles. It caused much trembling among the buildings, and considerable alarm among the people, many leaving their beds. The shock was preceded by two loud reports like the blasting of rock; it apparently came from the north-west; no damage was done. August 2d, 5h. 20m.—A light shock was felt in San Francisco. It was sufficiently strong to awaken persons in bed; it was evidently more severe in Stockton. August 27th, 21h. 15m.—An earthquake was felt at Mission San Juan, Monterey County. There were two distinct shocks with short intervals elapsing, the second being the heaviest. The motion is described as undulatory and coming from the west. It was felt at Monterey and at Santa Cruz. September 6th, 3h.—A smart shock felt at Santa Cruz. It created considerable consternation and many persons left their beds.