Dear Sir,

My father begs me to express to you his warm thanks for your kind congratulations and especially for so obligingly giving him full details about the letters.² He is particularly glad to have this information & will preserve your letter amonst the rest of the Butlerian documents.³ My father would have written himself, had it not been that I had to answer your note to myself—⁴

I feel much pleased that you think my little lecture worthy of Kosmos. I am quite willing that it should be translated, and I think it would be best for me to mention it to M^r Dallas—⁵ The only condition which I should care to make, is that it must be clearly stated that it is meant to be strictly popular   I do not care either that the original source or date of the article be given—

I beg leave to remain | Dear Sir | Yours faithfully | Francis Darwin

D^r Ernst Krause