The region traversed by the Alleghany is wild and mountainous, rich in pine forests, coal, and petroleum oil; and the extraction from its rocky beds of the last-named article is so enormous in quantity, that at the present time more than four million barrels of oil are awaiting shipment in the oil districts of Pennsylvania. The smaller steamboats can ascend the river to Olean, about two hundred and fifty miles above Pittsburgh. At Olean, the river has a breadth of twenty rods.
In consequence of its high latitude, the clear waters of the Alleghany usually freeze over by the 25th of December, after having transported upon its current the season's work, from the numerous saw-mills of the great wilderness through which it flows, in the form of rafts consisting of two hundred million feet of excellent lumber.
The Ohio River has a width of about half a mile below Pittsburgh, and this is its medial breadth along its winding course to its mouth at Cairo; but in places it narrows to less than twenty-five hundred feet, while it frequently widens to more than a mile. A geographical writer says, that, "In tracing the Ohio to its source, we must regard the Alleghany as its proper continuation. A boat may start with sufficient water within seven miles of Lake Erie, in sight sometimes of the sails which whiten the approach to the harbor of Buffalo, and float securely down the Conewango, or Cassadaga, to the Alleghany, down the Alleghany to the Ohio, and thence uninterruptedly to the Gulf of Mexico."
There are grave reasons for doubting that part of the statement which refers to a boat starting from a point within seven miles of Lake Erie. It is to be hoped that some member of the New York Canoe Club will explore the route mentioned, and give the results of his investigations to the public. He would need a canoe light enough to be easily carried upon the shoulders of one man, with the aid of the canoeist's indispensable assistant—the canoe-yoke.
It will be seen that the Ohio with its affluents drains an immense extent of country composed of portions of seven large states of the Union, rich in agricultural wealth, in timber, iron, coal, petroleum, salt, clays, and building-stone. The rainfall of the Ohio Valley is so great as to give the river a mean discharge at its mouth (according to the report of the United States government engineers) of one hundred and fifty-eight thousand cubic feet per second. This is the drainage of an area embracing two hundred and fourteen thousand square miles.
The head of the Ohio River, at Pittsburgh, has an elevation of eleven hundred and fifty feet above the sea, while in the long descent to its mouth there is a gradual fall of only four hundred feet; hence its current, excepting during the seasons of freshets, is more gentle and uniform than that of any other North American river of equal length. During half the year the depth of water is sufficient to float steamboats of the largest class along its entire length. Between the lowest stage of water, in the month of September, and the highest, in March, there is sometimes a range of fifty feet in depth. The spring freshets in the tributaries will cause the waters of the great river to rise twelve feet in twelve hours. During the season of low water the current of the Ohio is so slow, as flatboat-men have informed me, that their boats are carried by the flow of the stream only ten miles in a day. The most shallow portion of the river is between Troy and Evansville. Troy is twelve miles below the historic Blennerhasset's Island, which lies between the states of Ohio and Virginia. Here the water sometimes shoals to a depth of only two feet.
Robert Cavelier de la Salle is credited with having made the discovery of the Ohio River. From the St. Lawrence country he went to Onondaga, and reaching a tributary of the Ohio River, he descended the great stream to the "Fa1ls," at Louisville, Kentucky. His men having deserted him, he returned alone to Lake Erie. This exploration of the Ohio was made in the winter of 1669-70, or in the following spring.
The director of the Dpt des Cartes of the Marine and Colonies, at Paris, in 1872 possessed a rich mass of historical documents, the collection of which had covered thirty years of his life. This material related chiefly to the French rule in North America, and its owner had offered to dispose of it to the French government on condition that the entire collection should be published. The French government was, however, only willing to publish parts of the whole, and the director retained possession of his property. Through the efforts of Mr. Francis Parkman, the truthful American historian, supported by friends, an appropriation was made by Congress, in 1873, for the purchase and publication of this valuable collection of the French director; and it is now the property of the United States government. All that relates to the Sieur de la Salle—his journals and letters—has been published in the original French, in three large volumes of six hundred pages each. La Salle discovered the Ohio, yet the possession of the rich historical matter referred to throws but little light upon the details of this important event. The discoverer- -of the great west, in an address to Frontenac, the governor of Canada, made in 1677, asserted that he had discovered the Ohio, and had descended it to a fall which obstructed it. This locality is now known as the "Falls of the Ohio," at Louisville, Kentucky.
The second manuscript map of Galine'e, made about the year 1672, has upon it this inscription: "River Ohio, so called by the Iroquois on account of its beauty, which the Sieur de la Salle descended." It was probably the interpretation of the Iroquois word Ohio which caused the French frequently to designate this noble stream as "La belle rivire."
A little later the missionary Marquette designed a map, upon which he calls the Ohio the "Ouabouskiaou." Louis Joliet's first map gives the Ohio without a name, but supplies its place with an inscription stating that La Salle had descended it. In Joliet's second map he calls the Ohio "Ouboustikou."