Whatever Indians he met would be closely questioned, and if they communicated anything, the Great River must have been the first object of their thoughts. An observation of either of these three rivers by La Salle, in the lower part of their course, or even second-hand information respecting them from the savages, must have led a mind so acute as his, sharpened by his purposes and his surroundings, to the conclusion that he was near the Mississippi. Did he reach this conclusion, and find himself baffled by the clamors or the desertion of his men? Did he find means to procure other men and supplies without returning to Montreal? It appears from the _Colonie Francaise_, vol. iii, that in the summer of 1671 he had communication with Montreal, where he obtained a credit of 454 _livres tournois_. Did this enable him to pass from the waters of the Ohio to those of Lake Erie, and undertake a long cruise through the lakes to the Illinois country? Whatever reply should be made to these queries, it is reasonably evident that when his great work of 1679 was undertaken he did not know that the Ohio is a tributary of the Mississippi, or whether the great unknown river would conduct them to the South Sea. The discoveries of Joliet in 1673 did not remove these doubts from the minds of the governor-general or the geographers of that period. La Salle, as late as 1682, after having been at the mouth of the Mississippi, was inclined to the opinion that the Ohio ran into a great (but imaginary) river, called Chucugoa, east of the Mississippi, discharging into the Gulf or the Atlantic in Florida. The French had not followed the Ohio from the falls to its junction with the Wabash. On a map made in 1692, ten years later, the Wabash is equivalent to the lower Ohio, formed by the Miami and the upper Ohio, the Wabash of our maps being omitted. The main facts which residents of the Ohio valley are most curious to know concerning La Salle’s operations here are yet wanting. We have made diligent search for them, and are as yet unable to say, precisely, how much time he spent on the waters of the Ohio and Lake Erie prior to 1673; what trading posts he established, if any; what streams he navigated, or with what tribes he became acquainted. The instructions to Governor-General DuQuesne in 1752, above referred to, claim that the French had occupied this country ever since it was discovered by La Salle. Governor Burnet, of the colony of New York in 1721, states that, three years before, the French had no establishments on Lake Erie.