This group of about 40 letters, a part of the Sinclair Collection, consists of correspondence between Charles Robert Darwin (1809-1882) and John Scott Burdon Sanderson (1828-1905) during the years from 1873-1881.
The letters deal with the research Darwin and Burdon Sanderson did on the digestive powers and leaf movements of insect-eating plants, notably Drosera and Dionaea. Darwin published the results of this research as part of his <em>Insectivorous Plants</em> (1875).
There is also correspondence about Burdon Sanderson's (and to a lesser extent, Darwin’s) attempts to ensure that the antivivisectionists should not secure the passage of a bill through Parliament that should hinder scientific research. Sanderson's efforts influenced the events that led to the appointment of a Royal Commission in 1875 to study the use of animals in scientific research in Britain.
Burdon-Sanderson, John, Sir