gsminmag Mineralogical Magazine Mineralogical Magazine 0026-461X Mineralogical Society 10.1180/minmag.1878.002.10.04 Errata in Dr. Heddle's Paper on Unst (Min. Mag., No. 8) 9 1878 2 10 133 133 Copyright © 1878, The Mineralogical Society 1878