Description | Paper describing the action that aqua regia has on oils, fats, and resinous materials, and in particular, describing its effect on gold. The author also describes how to return the 'oily gold' to solid gold by using quicksilver to amalgamate the gold and then evaporating the quicksilver away again.
Subject: Chemistry / Metallurgy
Read to the Royal Society on 5 February 1729. |