A Mid-ocean Rock

The Mercury publishes rather a sensa tional report of a rock in the midflle o the Atlantic Ocean as a solution of th mystery regarding the fate of the steam ships City of Boston, President, Pacifio United Kingdorn, the Ismailia and othe veaBels that have never been heard from after lea ving port. The rock, it appears lies in lattitude 40 north and longitud 62.18. It was discovered by Captain Pioasso, of the Italian bark Teresa, whicl arrived at Queenstowu October 2, from New York. Captain Picasso makes th following report of his diecovery: On the 9th of September, at 1 p. m. wind northerly, very light and clea weather, with sea perfectly smooth, observed on the horizon a large rock in the shape of a trapezium, about four miles to the windward, in lattitude 40 north, longitude 62.18 west ; tried to beat up to it, but, owing to the lightness of the wind, could not do so. The rock lay north and south, and was of a reddish brown color ; discerned the sea weed on it plainly with a glass. The dimensious are as follows: Length. 100 metres, 3 feet, 3 1-2 inches per inetre, on the south part ; 14 raetres broad, and 6 metreg out of the water, which was low about halfpaat two p. m. The rock bore north, and we made by chronometer calculation, the rock was in the exact position of latitue 40 north, longitude 62.18 west. Capt. Picasso states that he has a chart of 1848 by Noneys on board, with this rock marked on it, but there are two degrees difference in longitude. This, he says, is accounted for by the incorrectness of the old chronometers. He was surprised at uot findiug this rock on an English chart by Wilson, datpd 1872, and also on aPrench chart, same date, which is on board. He states that he tried for sounding8, but could get none in the vicinity of the rock. According to Capt. Picasso's report, the rock is within a few seconds of the same degree as New York is situated in, and on a straight line from west to east, lying about 550 miles from our harbor, and nearly in the course of the ocean steamers, in what is known as thp southern passage.