CHAPTER LXIII. Missions--Hard times, consequent on over-speculation--Question of the rise of the lakes--Scientific theory--Trip to Washington--Trip to Lake Superior and the Straits of St.Mary--John Tanner--Indian improvements north of Michilimackinack--Great cave--Isle Nabiquon--Superstitious ideas of the Indians connected with females--Scotch royals--McKenzie--Climate of the United States--Foreign coins and natural history--Antique fort in Adams County, Ohio--Royal Society of Northern Antiquaries--Statistics of lands purchased from the Indians--Sun's eclipse--Government payments..