1 Augur Maker 6 1 Bellows Maker 3 18 Blacksmiths 74 3 Brewers 17 3 Brush Makers 7 1 Button Maker 6 2 Cotton Spinners 36 7 Cabinet-Makers 43 11 Copper and Tin Smiths 100 1 Currier 4 2 Cutlers 6 4 Iron Founders 87 3 Gun Smiths 14 2 Flint Glass Manufactories 82 3 Green ditto ditto 92 2 Hardware Manufactories 17 7 Hatters 49 1 Locksmith 7 1 Linen Manufactory 20 1 Nail ditto 47 1 Paper Maker 40 {62} 1 Pattern Maker 2 3 Plane Makers 6 1 Potter (fine ware) 5 1 Rope Maker 8 1 Spinning Machine Maker 6 1 Spanish Brown Manufactory 2 1 Silver Plater 40 2 Steam-Engine Makers 70 2 Steam Grist Mills 10 6 Saddlers 60 5 Silversmiths and Watch Repairers 17 14 Shoe and Boot Makers 109 7 Tanners and Curriers 47 4 Tallow Chandlers 7 4 Tobacconists 23 2 Weavers 9 3 Windsor Chair Makers 23 2 Woolen Manufactories 30 1 Wire Drawer 12 1 White Lead Factory 6 ---- Total 1280 Besides the above, it is surmised that there are three hundred and fifty-seven manufacturing people, of which no estimate has been furnished by the conductors. There is, besides, a chemical manufactory, in which ammonia, copperas, lamp black, ivory black, and various acids, are prepared. Formerly large ships were built at Pittsburg, which sailed down the river during floods: large keel boats, capable of either ascending or descending the river.[38] Square arks, family boats, and small skiffs, are built in great numbers. A steam-boat of 330 tons burden, for the navigation of the Mississippi and Ohio, is nearly completed. The conveyance of goods from Philadelphia {63} and Baltimore, together with their warehousing and boating, produces much business here. In the year 1813, no less than 4055 waggons, engaged in this trade, were calculated to have passed the road. The number employed now must be considerably increased.