Box List for PP/9 An index for manuscripts of papers published in volume 41 of the Proceedings of the Royal Society, with papers numbered 1-23. Papers 1 ['On underground temperature; with observations on the conductivity of rocks; on the thermal effects of saturation and imbibition; and on a special source of heat in mountain ranges', Joseph Prestwick], 2 ['On the agency of water in volcanic eruptions; with some observations on the thickness of the Earth's crust from a geological point of view; and on the primary cause of volcanic action', Prestwick], 15 ['Presidents' Address'] and 16 ['Report of the Kew Committee for the year ending October 31, 1886'] are listed as 'wanting'. Plates are listed as 'wanting' for paper 11 [PP/9/9]. 1886