Dear Sir
You may remember a statement, which I communicated to you about the Sandwich Isld lice not living on Europæans.2 The other day, I met a passage in a foolish Book. “Whites Regular Gradation of Man”, which I thought you might like to know of.— At p. 79 He states that he has heard that the lice on the Negroes, born in N. America & who have never been in a hot country, are blacker & larger than the lice on Europæans & further that the Europæan Lice seem to refuse to live on the Negroes.3
It is singular if both this & my independent statement, are without any foundation.
Believe me | Dear Sir | Your’s very faithfully | C. Darwin
This letter returned by Dead office
I hope you received the specimens safely, which I sent by Post the other day4
Please cite as “DCP-LETT-754F,” in Ɛpsilon: The Charles Darwin Collection accessed on