Draft letter, from Sir John Herschel to James South, dated at Slough Autographed draft letter, signed or initialed by sender. A friend has requested John Frederick William Herschel to ask James South whether James South has a large Cauchoix objective lens that he would be willing to sell. John Frederick William Herschel has dismantled his 20-ft. telescope for voyage to Cape Town. 4 July 1833