From:
John Traherne Moggridge
To:
Charles Robert Darwin
Date:
22 July 1873
Source of text:
DAR 171: 219
Summary:
He will repeat the experiments in which CD found that formic acid vapour killed seeds [see 8866]. John Lindley describes effects of other acids on germination.
He has tabulated the large amount of variation in English Ophrys apifera.
Contributor:
Darwin Correspondence Project