TY - JOUR T1 - Observations on Pure Ice and Snow JF - Proceedings of the Royal Society of London (1854-1905) VL - 40 SP - 544 EP - 549 PY - 1886/01/01/ UR - http://dx.doi.org/10.1098/rspl.1886.0079 M3 - doi:10.1098/rspl.1886.0079 AU - Andrews, T. ER -