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Darwin Correspondence Project

To Friedrich Rolle   1 February [1866]1

Down Bromley Kent

Feb 1

My dear Sir

I have received safely all five numbers of your work “Der Mensch” & your obliging note of Jan. 28.2 I have not as yet had time to do more than turn over the pages of the four latter numbers; nor shall I be able for some little time, as my health is weak, but when I do read them I have no doubt I shall find interesting matter, & I thank you sincerely for sending them to me.

Your letter contained several points new to me. I was not aware that Rütimeier for whom I feel much respect, had ever expressed himself on the subject of the modification of species.3 I am sorry to hear what you tell me about Dr Weinland & Jager4 I am not at all surprized at what you say about disagreeing with me on some points, for no two men cd think independently on so complex a subject without differing to a certain extent5

With my best thanks for your kindness pray believe me my dear Sir | yours very faithfully | Ch. Darwin


The year is established by the relationship between this letter and the letter from Friedrich Rolle, 28 January 1866.
CD refers to Ludwig Rütimeyer; see letter from Friedrich Rolle, 28 January 1866 and n. 11.
CD refers to David Friedrich Weinland and Gustav Jäger; see letter from Friedrich Rolle, 28 January 1866 and nn. 8–10.


Rolle, Friedrich. 1866. Der Mensch, seine Abstammung und Gesittung, im Lichte der Darwin’schen Lehre von der Art-Entstehung und auf Grundlage der neuern geologischen Entdeckungen dargestellt. Frankfurt: J. C. Hermann.


Thanks for all five numbers of Der Mensch [1866].

Had not known that Rütimeyer had written on modification of species.

Letter details

Letter no.
Charles Robert Darwin
Friedrich Rolle
Sent from
Source of text
Senckenberg Forschungsinstitut und Naturmuseum, Frankfurt (SNG-Archiv: Malakol.: Nachlass Rolle)
Physical description

Please cite as

Darwin Correspondence Project, “Letter no. 4992,” accessed on 28 November 2021,

Also published in The Correspondence of Charles Darwin, vol. 14