From:
Thomas Henry Farrer, 1st baronet and 1st Baron Farrer
To:
Charles Robert Darwin
Date:
19 June 1871
Source of text:
DAR 164: 69–70
Summary:
Observations on orchids. Ophrys apifera; confirms CD’s observation on pollinia. The nesting of ducks in trees is an example of change of instinct and habit.
Contributor:
Darwin Correspondence Project