Afterward Guérin met a Sauk Indian with Menard’s kettle, which he said he found in the woods, near footprints going in the direction of the Sioux country.[463] His breviary and cassock were said to have been found among the Sioux, and it is supposed that he was either killed, or died from exposure, and that his effects were taken by wandering Indians.[464] Perrot writes: “The Father followed the Ottawas to the Lake of the Illinois [Michigan], and in their flight to Louisiana [Mississippi] as far as the upper part of Black River.” Upon a map prepared by Franquelin, in 1688,[465] for Louis XIV., there is a route marked by a dotted line from the vicinity of Keweenaw Bay to the upper part of Green Bay. If Perrot’s statement is correct, Menard and his devoted attendant Guérin saw the Mississippi twelve years before Joliet and his companion looked upon the great river. The reports of Nicolet and Groseilliers led to a correction and enlargement of the charts of New France. On a map[466] accompanying the _Historia Canadensis_, by Creuxius, Lake Michigan is marked as “Magnus Lacus Algonquinorum, seu Lacus Fœtetium,” and a lake intended for Nepigon is called “Assineboines,” near which appear the nations Kilistinus and Alimibegôecus. The lake of the Assineboines is connected by a river with an arm of Hudson’s Bay called “Kilistonum Sinus;” and west of this is Jametus Sinus, or James’s Bay. Pierre Boucher, an estimable man, sent by the inhabitants of Canada to present their grievances to the King of France, in a little book which in 1663 he published at Paris,[467] wrote: “In Lake Superior there is a great island which is fifty leagues in circumference, in which there is a very beautiful mine of copper.” He also stated that he had heard of other mines from five Frenchmen lately returned, who had been absent three years, and that they had seen an ingot of copper which they thought weighed more than eight hundred pounds, and that Indians after making a fire thereon would cut off pieces with their axes. Groseilliers[468] returned to Canada, and on the 2d of May, 1662, again left Quebec, with ten men, for the North Sea, or Hudson’s Bay. His journey satisfied him that it was easy to secure the trade of the North by way of Lake Superior; but the Company of Canada, which had the monopoly of the fur traffic, looked upon Groseilliers’ plans for securing the peltries of distant tribes as chimerical. Thus disappointed and chagrined, Groseilliers next went to Boston, and presented his schemes to its merchants.