Dear Sir

Staying here for a holiday, your favour of the 10^th. is just received—¹ The arrangement you have made with M^r. Murray for Stereo Plates & clichés of 21 Wood blocks for the new book seems very satisfactory at £50—²

M^r. Cooke wrote me sometime since that it was arranged they should supply Impressions of the heliotype Plates, and asked what quantity would be required, as he wished to have an early reply, I ordered 5000 sets, and advised Mess^rs. Appleton, nothing was said about the cost of these plates and I took it for granted, they would be charged at a fair & moderate price— I shall soon hear if Mess^rs. Appletons think a larger quantity will be required, though they will most likely write direct to yourself, if not, you will hear again from | Yours Respectfully | Charles Layton | Agent D. Appleton & Co

To | Charles Darwin Esq