For small, soft, Gray Iron Castings, Japanned, Tinned, or Bronzed, address Enterprise Manufacturing Company, Philadelphia. Conklin's Detachable Rubber Lip, for bowls, etc., works like a charm. For Rights, address O. P. Conklin, Worcester, Mass., or A. Daul, Philadelphia, Pa. To Ascertain where there will be a demand for new machinery or manufacturers' supplies read Boston Commercial Bulletin's Manufacturing News of the United States. Terms $4.00 a year. * * * * * FACTS FOR THE LADIES. In 1870, Mrs. W. made, with her Wheeler & Wilson machine, 2,255 vests, besides doing her family sewing for six persons. * * * * * THE PITTSBURGH, PA., "LEADER" SAYS: "The firm of Geo. P. Rowell & Co. is the largest and best Advertising Agency in the United States, and we can cheerfully recommend it to the attention of those who desire to advertise their business scientifically and systematically in such a way; that is, to secure the largest amount of publicity for the least expenditure of money." * * * * * AFTER AN EXHAUSTIVE TRIAL, at American Institute Fair for 1870, Pratt's Astral Oil was pronounced the safest and best. * * * * * DYSPEPSIA: Its Varieties, Causes, Symptoms, and Cure. By E. P. MILLER, M. D. Paper, 50cts.; Muslin, $1. Address MILLER, HAYNES & CO., 41 West Twenty-sixth st., New York city. * * * * * VITAL FORCE: How Wasted and How Preserved; or, Abuses of the Sexual Function, their Causes Effects and Means of Cure. By E. P. MILLER M. D. Paper, 50cts. Address MILLER, HAYNES & CO., 41 West Twenty-sixth st., New York city. * * * * * ANSWERS TO CORRESPONDENTS. * * * * * _CORRESPONDENTS who expect to receive answers to their letters must, in all cases, sign their names. We have a right to know those who seek information from us; besides, as sometimes happens, we may prefer to address correspondents by mail._ _SPECIAL NOTE.--This column is designed for the general interest and instruction of our readers, not for gratuitous replies to questions of a purely business or personal nature. We will publish such inquiries, however, when paid for as advertisements at 1.00 a line, under the head of "Business and Personal."_ _All reference to back numbers must be by volume and page._ * * * * *