Letter, from John F. McLennan to Sir John Herschel, dated at 22 Hill St., Edinburgh Autograph letter signed by sender. Sends four sheets of his Memoir of Thomas Drummond and would be pleased if John Frederick William Herschel would look over them and correct any errors. Miss Elizabeth Drummond continues an invalid. Is also sending the proof sheets to Sir T. A. Larcom. 6 November 1866