CHAPTER VI.
Reception by the country on my return--Reasons for publishing my narrative without my reports for a digested scientific account of the expedition--Delays interposed to this--Correspondents--Locality of strontian--Letter from Dr.Mitchell--Report on the copper mines of Lake Superior--Theoretical geology--Indian symbols--Scientific subjects--Complete the publication of my work--Its reception by the press and the public--Effects on my mind--Receive the appointment of Secretary to the Indian Commission at Chicago--Result of the expedition, as shown by a letter of Dr.Mitchell to General Cass..