Referee's report by William Thomson, Lord Kelvin, on two papers 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' and 'Researches on solar physics.-No. II. The positions and areas of the spots observed at Kew during the years 1864-66, also the spotted area of the sun's visible disk from the com­mencement of 1832 up to May 1868' by Warren De La Rue, Balfour Stewart and Benjamin Loewy

William Thomson, Referee's report by William Thomson, Lord Kelvin, on two papers 'Researches on solar physics. Heliographical positions and areas of sun-spots observed with the Kew photoheliograph during the years 1862 and 1863' and 'Researches on solar physics.-No. II. The positions and areas of the spots observed at Kew during the years 1864-66, also the spotted area of the sun's visible disk from the com­mencement of 1832 up to May 1868' by Warren De La Rue, Balfour Stewart and Benjamin Loewy, 01 June 1865, RR/5/59, The Royal Society Archives, London, https://makingscience.royalsociety.org/items/rr_5_59/referees-report-by-william-thomson-lord-kelvin-on-two-papers-researches-on-solar-physics-heliographical-positions-and-areas-of-sun-spots-observed-with-the-kew-photoheliograph-during-the-years-1862-and-1863-and-researches-on-solar-physics-no-ii-the-positions-and-areas-of-the-spots-observed-at-kew-during-the-years-1864-66-also-the-spotted-area-of-the-suns-visible-disk-from-the-commencement-of-1832-up-to-may-1868-by-warren-de-la-rue-balfour-stewart-and-benjamin-loewy, accessed on 11 February 2026

https://makingscience.royalsociety.org/items/rr_5_59/referees-report-by-william-thomson-lord-kelvin-on-two-papers-researches-on-solar-physics-heliographical-positions-and-areas-of-sun-spots-observed-with-the-kew-photoheliograph-during-the-years-1862-and-1863-and-researches-on-solar-physics-no-ii-the-positions-and-areas-of-the-spots-observed-at-kew-during-the-years-1864-66-also-the-spotted-area-of-the-suns-visible-disk-from-the-commencement-of-1832-up-to-may-1868-by-warren-de-la-rue-balfour-stewart-and-benjamin-loewy

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