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 steamboat 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.
Pittsburg also derives much advantage from its being the thoroughfare of settlers for the western country. Here they sell their horses and waggons; here they often remain waiting for a rise of water. Here also they purchase boats, and lay in a stock of provisions for their passage down the river.
The waters of the Ohio are now lower than they have been for many years past. Merchants with their goods, and families with their baggage, find it impossible to get downward. Some whose moveables are light, are making the attempt. Many emigrants are proceeding with their waggons by land. Where the distance does not exceed three or four hundred miles, this will, at present, be found the more economical and expeditious mode of travelling.
