From:
Alfred Swaine Taylor
To:
Edward Cresy, Jr
Date:
10 Dec 1860
Source of text:
DAR 58.1: 14–15
Summary:
CD may be interested in a reference to a method of detecting 1/195000 of a grain of sodium chloride.
Also, on Drosera, suggests it would be interesting to try substances such as gun-cotton, in which nitrogen is in very different states from a salt of ammonia.
Contributor:
Darwin Correspondence Project
