And colourless. 8. _Opalus_ seems to have come down to the King of Macedon.

Mixed by the RCS engines and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive) [Illustration: _Raeburn. Pinx^t._ _Dean, sculp^t._ JOSEPH BLACK, M.D. F.R.S.E. _London. Published by Henry Colburn .