Draft letter, from Sir John Herschel to Thomas W. Hornbuckle, dated at [56 Devonshire St.] Draft letter. Declines being considered for the Lucasian professorship at Cambridge, stating his convictions 'that I shall do more for science as an independent amateur than as a Professor of any particular branch or department of it.' Proposes Charles Babbage as candidate. [Also includes draft of letter to George Peacock requesting his support for Babbage.] 13 October 1826