TY - JOUR T1 - The Optical Constants of Gypsum at Different Temperatures, and the Mitscherlich Experiment JF - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934) VL - 81 IS - 544 SP - 40 EP - 57 PY - 1908/07/30/ UR - http://dx.doi.org/10.1098/rspa.1908.0062 M3 - doi:10.1098/rspa.1908.0062 AU - Tutton, A. ER -