TY - JOUR T1 - A Second Letter to Dr. Rutty, R. S. Secr. Containing Farther Observations towards Composing a Natural History of Mines and Metals. By Dr. Nichols, Prael. Anat. Oxon, and R. S. S. JF - Philosophical Transactions (1683-1775) VL - 35 SP - 480 EP - 485 PY - 1753/01/01/ UR - http://dx.doi.org/10.1098/rstl.1727.0044 M3 - doi:10.1098/rstl.1727.0044 AU - Nicholls, F. ER -