Letter, from Norman Pogson to Sir John Herschel, dated at Hartwell, Aylesbury Autograph letter signed by sender. Thanks John Frederick William Herschel for supporting his proposed method of designating variable stars, adding that G. B. Airy, J. R. Hind, and W. H. Smyth also accept it. Hopes to succeed M. J. Johnson as director of Oxford's Radcliffe Observatory. 3 April 1860