From:
Charles Robert Darwin
To:
Oswald Heer
Date:
20 Apr [1861?]
Source of text:
Catherine Barnes (dealer) (2002)
Summary:
Thanks for correspondent’s Untersuchungen [? Über das Klima und die Vegetationsverhältnisse des Tertiärlandes (1860)]. CD has always considered subject interesting and important.
Contributor:
Darwin Correspondence Project