London was startled on Wednesday by the news that in the small hours of the morning another murder and mutilation had taken place, similar to the crimes which alarmed Whitechapel during the latter part of last year. As Constable Andrews was passing up Castle alley, which leads into High street, Whitechapel, at about ten minutes to one o'clock, he came upon the murdered and mutilated body of an unfortunate, which was lying under a gas lamp in front of Messrs. Davis S. King & Sons' warehouse. The body lay against the lamp post, in a pool of blood. The woman, who seemed to be about forty years of age, had her throat cut from ear to ear, and two deep gashes, evidently inflicted with a sharp instrument, in the lower part of the abdomen. The murderer evidently had not time to finish his work, as the body was not so terribly mutilated there as was the case in some of the previous murders. Mr. Monro, Chief Commissioner of the Metropolitan Police, and Colonel Monsell were aroused from bed, and were in Castle alley within an hour and a half of the discovery of the body. A few suspected men were arrested, but released. It has transpired that the police have during the last few weeks received letters signed "Jack the Ripper," intimating that he would recommence his horrible work in July; and Mr. Albert Backert, who took a leading part in the vigilance proceedings of last year, received a similar letter about three weeks ago.