3,794.--CAR VENTILATOR.--Robert Hitchcock, Springfield, Mass. 3,795 to 3,797.--WARDROBE HOOK.--Morton Judd, New Haven, Conn. Three patents. 3,798 to 3,802.--CARPET PATTERN.--Elemir J. Ney, Dracut, assignors to Lowell Manufacturing Company, Lowell, Mass. Five patents. 3,803.--TRADE MARK.--Charles Perkes, Philadelphia, Pa. 3,804 and 3,805.--WATCH PLATE.--George P. Reed, Boston, Mass. Two patents. 3,806.--FRUIT JAR COYER.--Henry E. Shaffer, Rochester, N.Y. * * * * * SUBSCRIBERS--who wish to have their volumes bound, can send them to this office. The charge for binding is $1.50 per volume. The amount should be remitted in advance, and the volumes will be sent as soon as they are bound. * * * * * ADVERTISEMENTS _The value of the_ SCIENTIFIC AMERICAN _as an advertising medium cannot be over-estimated. Its circulation is ten times greater than that of any similar journal now published. It goes into all the States and Territories, and is read in all the principal libraries and reading-rooms of the world. We invite the attention of those who wish to make their business known to the annexed rates. A business man wants something more than to see his advertisement in a printed newspaper. He wants circulation. If it is worth 25 cents per line to advertise in a paper of three thousand circulation, it is worth $2.50 per line to advertise in one of thirty thousand._ RATES OF ADVERTISING. Back Page $1.00 a line. Inside Page 75 cents a line. _Engravings may head advertisements at the same rate per line, by measurement, as the letter-press_. * * * * * FOR SALE--A 9-ft. Planer, 4 Lathes, 2 Shapers, Gear Cutter, Drill Press, Fanblower, Anvils, Vises, etc., at L. DUVINAGE'S, 209 Center st., New York. * * * * * TOSELLI'S Ice Machines, Simple in operation, makking transparent ice without steam power. Address G. B. NEWMAN,33 Maiden Lane, New York. * * * * * GALVANO PLASTIC IRON--For Bank Note Printing, Books, Engravings, etc. Patent Rights for sale by C. M. CLAY & CO., No. 45 Liberty st. Box 4950. * * * * * CANCERS, SCROFULA, and all CUTANEOUS DISEASES cured by using the SHELDON SPRING WATER. Book of thirty pages, with certificates, sent free. Addres J. W. BEALS, Treasurer, Boston, Mass. * * * * * AGENTS WANTED IN EVERY COUNTY of the four following States:--Illinois, Indiana, Iowa, and Wisconsin, to sell B. F. Alexander's Patent Horse Hay Fork. For particulars address HOMER DUBREE, Glen Hope, Clearfleld Co., Pa. * * * * * _IRON & WOODWORKING_ Machinery Depot. New and Second-hand. GEORGE L. CUMMTNGS, 140 Center st., New York. * * * * * FOR SALE _AT A BARGAIN_,