To Francis Beaufort   1 September [1831]

Sir

I take the liberty of writing to you according to M^r. Peacocks desire to acquaint you with my acceptance of the offer of going with Capt Fitzroy. Perhaps you may have received a letter from M^r. Peacock, stating my refusal; this was owing to my Father not at first approving of the plan, since which time he has reconsidered the subject: & has given his consent & therefore if the appointment is not already filled up,—I shall be very happy to have the honor of accepting it.— There has been some delay owing to my being in Wales, when the letter arrived.—¹ I set out for Cambridge tomorrow morning, to see Professor Henslow: & from thence will proceed immediately to London.—

I remain Sir | Your humble & obedient servant | Chas. Darwin