The manner of investigation in regard to a missing relative or friend is as follows: As soon as a person disappears from home, the nearest relative, on learning of the missing person, goes to police headquarters and makes application to the "Missing Bureau" for information. The age, height, build; whiskers, if any; color of eyes, dress, hair; the place where last seen, the habits and disposition of the person, are given to the inspectors, and Officer McWatters makes proper entries on his register, which he keeps for that purpose, of all these facts. The personal description of the missing one is compared with the returns made by the Morgue every twenty-four hours to the police inspectors. Should the description answer to the person and clothing of any one found at the Morgue, word is at once sent to the relatives of the joyful news. Besides this, another very necessary precaution is taken to find the person or persons missing. Cards are printed, five or six hundred in number, and sent to all the police offices on special duty in the different metropolitan precincts, with instructions to the captains to have his men make active and energetic search for the person.

Troubles about Lost People.

Over seven hundred people have been reported as missing, to police headquarters during the past twelve months. Of this number the majority have been found, it is believed, as no record can be kept of those who are not reported when found, by their relatives or friends, to headquarters. Occasionally, a person who reports some one missing belonging to them, will give all the details about him, but if found, will fail to notify the authorities, from a sense of shame where domestic difficulties have occurred in families, or from laziness, or a sense of forgetfulness. Thus all track is lost of those who have been found unknown to the police, and accurate statistics are baffled in the matter of inquiry.

Where and how People are Lost.

The manner in which missing men are advertised, is as follows: A card, of which the following are fair examples, is circulated among the police.

"Missing.—Morton D. Gifford, about twenty-five years of age, light hazel eyes, brown hair, full beard and mustache same color, five feet six and three quarters inches; has lost two first joints of the middle fingers of right hand. Had on a light brown cloth suit bound with black, the vest cut without a collar, a black cloth overcoat made sack fashion, with black velvet buttons. Was last seen on board the steamer City of Norfolk, running between Norfolk and Crisfield, in connection with the Crisfield, Wilmington, and Philadelphia Railroad Annameric line, on the 3d of February, 1868. Had with him a black leather satchel, containing a full suit of black clothes, hat, linen, &c. Was a soldier in the Union army, and has recently been in business in Plymouth, North Carolina. Any person having any information regarding him will please communicate with Inspector Dilks, 300 Mulberry Street, New York."

"Office of the Superintendent of Metropolitan Police, }

300 Mulberry Street, New York, January 11, 1868. }

"Missing—since Thursday evening last, Mary Agnes Walsh, 23 years of age, residing at 281-1/2 Elizabeth Street, five feet high, medium size, slim built, dark complexion, dark-brown hair, dark eyes, had on a black alpaca dress, black plush coat (or cloak), black velvet hat. It is supposed she is wandering about the city in a temporary state of insanity, as she has just returned from the Lunatic Asylum, where she has been temporarily confined for the last three weeks. Any information of the above to be sent to her brother, Andrew Walsh, 281-1/2 Elizabeth Street, or to Inspector Dilks, 300 Mulberry Street."

"Missing, since Thursday, November 14, John F. McCormick. When last seen, he was on board the steamtug Yankee, at the foot of Charlton Street; age 24 years, eyes and hair dark brown, height five feet four inches, heavy eyebrows. He was dressed in a brown sack coat and brown vest, black pants, flat-crowned black hat. Any person knowing his whereabouts, or having seen him since the above date, will please call at the residence of his uncle, Robert McCormick, No. 12 Talman Street, Brooklyn, or to Inspector Dilks, Police Headquarters, 300 Mulberry Street. November 30, 1867."