gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1886.006.31.01 Address to the Mineralogical Society Bonney T. G. D.Sc., LL.D., F.R.S., P.G.S., etc. 3 1886 6 31 195 201 Copyright © 1886, The Mineralogical Society 1886