"This lecture is not included with any collection of Lincoln's addresses. It appeared in print for the first time in Sunset magazine, in 1909." (Prefatory note) Reproduced from the original ms. owned by Hon. Henry A. Melvin, of Oakland, Cal. The text of another different lecture on "Discoveries, inventions and improvements" is printed from a ms. owned by Charles F. Gunther, of Chicago, in Lincoln's Complete works, edited by Nicolay and Hay, 1894, v. 1, p. 522-528.