Floating stores were also to be seen on the Ohio. Cuming says, "On returning to our boat we found a floating store at the landing. It was a large square flat-roofed, and fitted with shelves and counter, and containing a various assortment of merchandise. They were dropping down the river, stopping occasionally wherever they could find a market for their goods."[30] Schultz, in his account of his journey, devotes one entire letter to a very interesting account of the craft upon the Ohio in 1807. The smallest were the canoes, then, the pirogues, sufficient to carry from twelve to fifteen barrels of salt. The skiffs varied from five hundred to twenty thousand pounds weight burthen, the larger ones being known as batteaux. Arks were not much in use on the Ohio, at that time.[31] Kentucky boats were of oblong form, varying from ten to fourteen feet in breadth, and from twenty to fifty feet in length, and were sided and roofed in. The roof answered the purpose of a main and quarter deck, and the boat was steered by a long pole, the whole length of the boat.[32] The boat usually carried from one to three hands, as it was necessary, when heavily loaded, to use the oars to keep the boat in the middle of the river. New Orleans boats were built upon the same model, but were generally much larger and stronger, and built with an arched roof fore and aft. The largest of these boats could carry four hundred and fifty barrels of flour.[33] The timbers or knees were built upon a small keel, three inches deep, and four or five in width,--hence the name keel boat. The keel received the first shock of any obstruction in the navigation. Schenectady boats were usually built from forty to eighty feet in length, and seven to nine in width--the largest kind requiring one hand to steer, and two to row in descending the Ohio. These boats carried as much as one hundred barrels of salt. In ascending the stream six or eight hands were needed to make any considerable progress.[34] "The best kind of boats on the Ohio are called barges."[35] These boats were steered by a rudder, and when descending with the current were not so easily twisted and turned as a keel boat. The barges carried from forty to sixty thousand weight, and required four hands besides the helmsman to descend the river; to return with a loading, from eight to twelve became necessary. "Barges as well as keel boats, generally carry a moveable mast a-mid-ships--whenever the wind will permit, set a square sail, and some few top sails."[36] The prices of these boats were as follows: Canoes from $1 to $3; pirogues from $5 to $20; large skiffs or batteaux from $20 to $50; arks $1 a foot in length; Kentucky and New Orleans boats from $1 to $1.50 a foot; Keel boats from $2.50 to $3 a foot; and barges from $4 to $5 a foot.[37]