To Alphonse de Candolle 11 November 
Down Bromley Kent [Ilkley]
I have thought that you would permit me to send you (by Messrs Williams & Norgate Booksellers) a copy of my work (as yet only an abstract) on the Origin of Species. I wish to do this, as the only though quite inadequate manner by which I can testify to you, the extreme interest which I have felt, & the great advantage, which I have derived, from studying your grand & noble work on Geographical Distribution.1 Should you be induced to read my volume, I venture to remark that it will be intelligible only by reading the whole straight through, as it is very much condensed. It would be a high gratification to me, if any portion interested you.— But I am perfectly well aware, that you will entirely disagree with the conclusion, at which I have arrived.
You will probably have quite forgotten me; but many years ago you did me the honour of dining at my house in London to meet M. & Mad. Sismondi,—the uncle & aunt of my wife.—2
With sincere respect, I beg leave to remain— | Yours very faithfully | Charles Darwin
Sends Origin as testimony to great benefit CD derived from AdeC’s works on distribution.