From:
Robert Mushet
To:
Sir John Herschel
Date:
[17 August 1853]
Source of text:
TxU:H/M-0386; Reel 1087
Summary:
Returns JH's book. Describes alloy of gold and silver. Copper-iridium alloy would work, but it would influence assays adversely. Procedure for separating gold and iridium.
Contributor:
John Herschel Project