From:
Samuel Young
To:
Sir John Herschel
Date:
[17 June 1819]
Source of text:
RS:HS 18.314
Summary:
Mineral apophyllite [Argentine spar]. Offers gems and minerals from India for JH's experiments. David Brewster's papers raise questions about polarized light. Describes microscope SY found.
Contributor:
John Herschel Project