From:
George Brettingham Sowerby
To:
Charles Robert Darwin
Date:
17 Jan 1846
Source of text:
DAR 43.1: 1c–2
Summary:
Describes his reasoning in classifying CD’s Turritella ambulacrum specimens into two sorts. GBS holds that distinguishing characters, whether of species or varieties, should always be noticed. [See South America, appendix, pl. III, fig. 49.]
Contributor:
Darwin Correspondence Project