Copy of a letter from John Frederick William Herschel, Collingwood to the Committee of Physics Copy of a letter, in unknown hand, likely for circulation for the Committee of Physics. 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