From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
10 Mar 1857
Source of text:
DAR 181: 35
Summary:
HCW is trying to define what CD means by "variable" genera.
Contributor:
Darwin Correspondence Project
From:
Hewett Cottrell Watson
To:
Asa Gray
Date:
13 Mar 1857
Source of text:
DAR 181: 36
Summary:
Describes problems of classifying species in highly variable genera. Lists highly variable genera. Comments on the list of Asa Gray. Says species may be made to appear more or less variable according to whether a genus is divided into few or many species.
Contributor:
Darwin Correspondence Project
From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
14 June [1857]
Source of text:
DAR 207: 20
Summary:
Sends a reference to Subularia which bears on a query CD made some time ago [see 2002]. Subularia was seen to flower in the air in a remarkably dry season.
Contributor:
Darwin Correspondence Project
From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
14 Dec [1857]
Source of text:
DAR 98: A11–12
Summary:
Will shortly return CD’s list of varieties of British plants. Discusses the situations in which different varieties of species are often found and the ranges of varieties relative to those of the species.
Contributor:
Darwin Correspondence Project
From:
Hewett Cottrell Watson
To:
Charles Robert Darwin
Date:
20 Dec [1857]
Source of text:
DAR 98: A13–14
Summary:
Finds he cannot annotate CD’s list of subspecies and varieties as wanted. Mentions again his difficulties with "species"; he "cannot find the proof of species being definite and immutable whatever they may seem to be at any one time and spot".
Contributor:
Darwin Correspondence Project
