Copy of a letter, from John Frederick William Herschel, Collingwood to the Committee of Physics [This letter is in Edward Sabine's handwriting]. Herschel is unable to attend the meeting of the Committee of Physics personally to discuss ‘the subject of recommending to the Council the award of a Royal Medal’. Herschel draws the Committee’s attention to paper of [Philosophical Transactions] of The [Royal] Society, especially the ‘contribution to terrestrial magnetism by Colonel [Edward] Sabine’. Description of Sabine’s work in terrestrial magnetism and its importance to science. Contains a list of Sabine’s contribution in the [Philosophical] Transactions. Refers to observations, observers, and instruments. 11 November 1846