Paper, 'Preliminary report to the Solar Physics Committee on [incomplete]' by Balfour Stewart Stewart presents a comparison for two years between the diurnal ranges of magnetic declination as recorded at the Kew Observatory [London], and the diurnal ranges of atmospheric temperature as recorded at the observatories of Stonyhurst, Kew and Falmouth. Annotations in pencil and ink. Includes two graphs showing fluctuations of temperature and declination at Kew, 1871-1872. Subject: Physics Read 9 March 1882. A version of this paper was published in volume 33 of the Proceedings of the Royal Society as 'Preliminary report to the solar physics committee on a comparison for two years between the diurnal ranges of magnetic declination as recorded at the Kew Observatory, and the diurnal ranges of atmospheric temperature as recorded at the observatories of Stonyhurst, Kew, and Falmouth'. [1882]