Pièce 12 - Letter from John Herschel

JH's reasons for declining to become a candidate for the Lucasian Chair: He does 'not wish to devote myself exclusively or par excellence to any one branch of science - perhaps too a consciousness that I prefer physical to mathematical science'. Any science he does do 'I had rather should be considered as done an amateur than as a matter of duty and profession'. JH has written to [James] Wood to canvass for Babbage. JH has become 'an ultra-Huttonian in regard of long geological periods'.