Letter, from William Henry Smyth to Sir John Herschel, dated at St. John's Lodge Autograph letter signed by sender. Visited Liverpool for inspection of School Frigate. Observed Triton. C. P. Smyth will install large telescope at Alta Vista; William Henry Smyth sends excerpt from son's letter. C. P. Smyth also works on spectral line observations. 9 September 1856