Letter, from Norman Macleod to Sir John Herschel, dated at Adelaide Place Glasgow Autograph letter signed by sender. [Alexander] Strahan would like an article from John Frederick William Herschel on the [Great] Pyramid, but Norman Macleod thinks that Piazzi Smyth is the man. All the same he would appreciate an article from John Frederick William Herschel, perhaps on a chemical theme. 20 November 1864