skip to content

Darwin Correspondence Project

To James Brown Gibson   [after 29 June 1862]1


I hope that you will permit me to return to you my sincere & cordial thanks for the kind manner with which you have acceded to my wishes in the endeavour the endeavour to find out whether there exists any re— [between] complexion & liability & tropical diseases.—2 Without your aid nothing whatever could have been done.—

The result may not [illeg] turn out a complete failure; but I have not ventured to make my request without [mature] consideration.—

With my sincere thanks for all your kindness   I [hope] to remain | Your oblig Servt, | C. Darwin


Dated by the relationship to the letter from E. A. Parkes, 29 June 1862.
See letter from E. A. Parkes, 29 June 1862 . See also letter from George Busk, 1 April 1862, and letters from E. A. Parkes, 8 April 1862 and 28 April 1862.


Thanks JBG for acceding to his wishes in the endeavour to discover whether hair colour in Europeans is correlated with susceptibility to tropical diseases [see Descent 1: 244–5].

Letter details

Letter no.
Charles Robert Darwin
James Brown Gibson
Sent from
Source of text
DAR 96: 4
Physical description
AdraftS 2pp

Please cite as

Darwin Correspondence Project, “Letter no. 3361,” accessed on 26 September 2021,

Also published in The Correspondence of Charles Darwin, vol. 10