In May, 1701, Le Sueur left Fort d’Huillier in charge of M. d’Evaque, a Canadian gentleman, with a force of twelve Frenchmen, while he himself in his felucca with the rest of his men returned to Mobile, carrying with him “three canoe loads,” or “four thousand pounds,” of the “green earth,” supposed to be oxide of copper, but which was really from a kind of shelly marly strata, interposed between the fossiliferous limestone and the sandstone of that region, that was colored bluish-green by silicate of iron. We next find Le Sueur—(who it has been stated was the father of the three distinguished brothers D’Iberville, DeBienville, and Sauvolle)[75]—in the summer of 1701 accompanying D’Iberville, the Governor of Louisiana, on his return to France, and assisting him while on shipboard in concocting a Memorial on the Mississippi Valley, addressed to the French government: in which D’Iberville says: He [M. LE SUEUR] has spoken to me of another, [nation] which he calls the Mahas, [Omahaw], composed of more than twelve hundred families [!], the Ayooues and the Octootatas, their neighbors, are about three hundred families. They occupy the lands between the Mississippi and the Missouri, about one hundred leagues from the Illinois. These savages do not know the use of (fire?) arms.... The memorial, (a manuscript copy of which, quoted by Professor Neill in his Minnesota history, is in possession of the Historical Society of that State), contains the first _attempt_ we have upon the record at a _Census_ of the Tribes of the Mississippi, and partially of the Missouri Valleys: made thirty-four years before the French Census of the Cass manuscript[76]—a census formerly claimed as being the very first extant—so claimed by Schoolcraft, in the third volume of his COLLECTIONS. Penicaud, the carpenter, states, that D’Evaque and the men Le Sueur left in charge of the Blue Earth post, abandoned it, and returned to Mobile [arriving there on the 3d of March], 1703, having left, as they alleged, on account of being warred upon “by the nations of Maskoutens and Foxes,” and “seeing that he was out of powder and lead.” Le Sueur for several years after his operations on the Blue-Earth was kept busy leading expeditions against the Natchez and other Indians of the southwest; and is said to have died[77] on the road during one of them.