It may, therefore, be safely asserted that, before the year 1634, "those so remote countries," lying to the northward and northwestward, beyond the Georgian bay of Lake Huron, had never been seen by civilized man. But, did Nicolet visit those ulterior regions in 1634, returning thence in 1635? That these were the years of his explorations and discoveries, there can be no longer any doubt.[21] After the ninth day of December, of the last-mentioned year, his continued presence upon the St. Lawrence is a matter of record, up to the day of his death, except from the nineteenth of March, 1638, to the ninth of January, 1639. These ten months could not have seen him journeying from Quebec to the center of what is now Wisconsin, and return; for, deducting those which could not have been traveled in because of ice in the rivers and lakes, and the remaining ones were too few for his voyage, considering the number of tribes he is known to have visited. Then, too, the Iroquois had penetrated the country of the Algonquins, rendering it totally unsafe for such explorations, even by a Frenchman. Besides, it may be stated that Champlain was no longer among the living, and that with him died the spirit of discovery which alone could have prompted the journey. Furthermore, the marriage of Nicolet which had previously taken place, militates against the idea of his having attempted any more daring excursions among savage nations. As, therefore, he certainly traveled up the Ottawa, as far as Isle des Allumettes, in 1634,[22] and as there is no evidence of his having been upon the St. Lawrence until near the close of the next year, the conclusion, from these facts alone, is irresistible that, during this period, he accomplished, as hereafter detailed, the exploration of the western countries; visited the Winnebagoes, as well as several neighboring nations, and returned to the St. Lawrence; all of which, it is believed, could not have been performed in one summer.[23] But what, heretofore, has been a very strong probability, is now seen clearly to be a fact; as it is certainly known that an agreement for peace was made some time before June, 1635, between certain Indian tribes (Winnebagoes and Nez Percés), which, as the account indicates, was brought about by Nicolet in his journey to the Far West.[24]