Came with the intention of paying JH money, but finds he is out; what shall he do? Can he also advise him about the map for the R.A.S.?

Considers his letter a particular favor [possibly giving the news of the death of JH's mother]. May be able to meet Lady Herschel in the Spring.

His wife is ill and is now at Brighton. Has just received JH's parcel. Is pleased JH likes William Whewell's article. Adam Sedgwick has refused a living.

Is gratified that JH has consented to sit for his portrait. Let him know the artist he has selected and they can arrange sittings.

Entirely approves of his choice of Thomas Phillips for his portrait. Has already painted Hugh Percy (3rd Duke of Northumberland).

Has probably already received a letter from the Lord Provost inviting JH to become a candidate for the chair of Natural Philosophy at Edinburgh. Outlines the duties. Hopes he will also accept the presidency of the Royal Society of Edinburgh.

Has been prevented from answering his letter earlier by increased illness. If he returns to town he will have pleasure in meeting H. C. Schumacher. Believes the pound must be made of bell metal. Thought JH was on his way to the Cape, but sees his letter was written from Slough.

Obliged for the present of his papers. Will keep them until the catalogue arrives. The improvements in his 20' telescope are interesting; comments on this. Will obtain the troy pound as soon as Parliament meets.

Wonders how JH's projected volume on Astronomy is progressing. Would also like a short biography of Francis Bacon.

Sends two articles for the R.A.S. Gained much pleasure from reading JH's Prelim. Discourse. If JH has written any other books for Lardner's Cabinet Cyclopaedia, he would be glad to receive copies. Work on Light has made great impression. Has Charles Babbage finished his Logs. yet? Cholera prevalent in Vienna.

Sending check in payment of JH's article on Celestial Mechanism in the Quarterly Review. Would be pleased if JH would now write an article on comets.

Has been induced to become a candidate to represent the University of Cambridge in Parliament and encloses his address. Would like JH's support.

Inviting JH to become a candidate for the Professorship of Natural Philosophy at Edinburgh University.

Would like JH to have his portrait painted by H. W. Pickersgill, at no cost, before JH departs for the Cape. RM's wife is in Hampshire.

Reports the elements of a comet's orbit [Biela's ?] based on the observations of F. B. G. Nicolai of Mannheim. Based on these observations together with some made by F. W. Bessel, WO gives the locations for the comet during the coming month. Also comments on astronomical observations made elsewhere.

Still worrying about planetary perturbations of Jupiter and Saturn [see GP's 1829-10-11]. Seeks advice on the matter from JH, and asks JH to make any necessary corrections on papers GP has sent.

Seems to be writing about the awarding of the R.S.L.'s Copley Medal. [Letter almost totally illegible.]

J. J. Lister also made set of experimental glasses similar to JH's [see TxU:H/L-0255]. Lister's experiments on color-blind persons. Will forward Lister's glasses to [John] Dalton. CM plans similar experiments with JH's glasses; will forward results to JH at Cape of Good Hope. Wishes to see JH's grinding and polishing machinery.

[SW's servant] Sally celebrates JH's birthday every year and longs to see JH again.

Answers JH's queries on visual perception. Describes trials conducted by JD. Concludes that many people see as JD sees. Sends colored silks submitted by [Richard] Potter to test color vision.