then are the mounds? If our conclusions are correct the oldest mound in our region cannot exceed 800 years, and the most recent must have been completed upwards of 400 years ago. Look at further considerations, which lead to these conclusions. We learn, that 200 years ago, viz.: in 1683, the "Clistinos" and "Assinipouals" (Crees and Assiniboines) were in their present country. The Crees were at that time in the habit of visiting both Lake Superior and Hudson's Bay for the purpose of trade. They were then extensive nations and no trace of a nation which preceded them was got from them. The fallen tree on the top of the grand mound, judging by the concentric rings of its trunk is 150 or 200 years old, and yet its stump stands in a foot or more of mould that must have taken longer than that time to form. Even among savage nations it would take upwards of half a dozen generations of men, to lose the memory of so great a catastrophe as the destruction of a former populous race. Then some 400 years ago would agree with the time of extermination of the Hochelagans, or with the destruction of the Eries, who according to Labontan were blotted out before the French came to the continent. The Hochelagans, Eries, and Takawgamis being northern in their habitat, I take it were among the last of the Toltecans who survived. The white man but arrived upon the scene to succeed the farmer, the metal worker and the potter, who had passed away so disastrously, and to be the avenger of the lost race, in driving before him the savage red man. THE EARLIEST MOUND. [Illustration: FIGURE 3.]