TY - JOUR T1 - Observations Respecting the Natural Production of Saltpetre on the Walls of Subterraneous and Other Buildings JF - Philosophical Transactions of the Royal Society of London (1776-1886) VL - 104 SP - 508 EP - 526 PY - 1814/01/01/ UR - http://dx.doi.org/10.1098/rstl.1814.0026 M3 - doi:10.1098/rstl.1814.0026 AU - Kidd, J. ER -