From:
Charles Robert Darwin
To:
James David Forbes
Date:
13 [Nov 1844]
Source of text:
University of St Andrews Special Collections (Papers of J. D. Forbes: msdep7 – Incoming letters 1844, no.65)
Summary:
Mexican specimen of laminated obsidian.
Comments on Forbes’s publication comparing lava streams and glaciers. Mentions ice-action theories of a young German.
Contributor:
Darwin Correspondence Project