The eighteen years of peace with the Iroquois, obtained by the expedition of the Marquis de Tracy, allowed the intendant to encourage the development of the St. Maurice mines, to send the traveller Nicolas Perrot to visit all the tribes of the north and west, in order to establish or cement with them relations of trade or friendship, and to entrust Father Marquette and M. Joliet with the mission of exploring the course of the Mississippi. The two travellers carried their exploration as far as the junction of this river with the Arkansas, but their provisions failing them, they had to retrace their steps.
This state of peace came near being disturbed by the gross cupidity of some wretched soldiers. In the spring of 1669 three soldiers of the garrison of Ville-Marie, intoxicated and assassinated an Iroquois chief who was bringing back from his hunting some magnificent furs. M. de Courcelles betook himself at once to Montreal, but, during the process of this trial, it was learned that several months before three other Frenchmen had killed six Mohegan Indians with the same purpose of plunder. The excitement aroused by these two murders was such that a general uprising of the savage nations was feared; already they had banded together for vengeance, and only the energy of the governor saved the colony from the horrors of another war. In the presence of all the Indians then quartered at Ville-Marie, he had the three assassins of the Iroquois chief brought before him, and caused them to be shot. He pledged himself at the same time to do like justice to the murderers of the Mohegans, as soon as they should be discovered. He caused, moreover, to be restored to the widow of the chief all the furs which had been stolen from him, and indemnified the two tribes, and thus by his firmness induced the restless nations to remain at peace. His vigilance did not stop at this. The Iroquois and the Ottawas