Sends book on Samothracian mysteries. Mentions article by [C. B.] Hafe. Suggests JH ask [William] Whewell to review the article in Quarterly Review.

Apologizes for illness preventing him from coming to Collingwood; comments on the South African political picture, and AS's intention to retire.

Seeks clarification from JH about a number of matters in the draft report of the Standards Commission [see JH's 1841-5-12 or earlier].

Invites JH to dinner if possible, or later if not at present possible.

Is in London studying English criminal law. EM was pleased with his visit with JH, and will be telling JH's aunt Caroline about it when he returns to Hanover.

A summons to a meeting of the Standards Commission, together with some proposals for amending the report.

Some details of improvements in the calotype method.

Has seen John Arrowsmith, who has sent the maps to JH. There is to be a meeting of the Standards Commission.

A note to accompany a number of papers on the 'toleration of inaccuracy,' a question of concern to JH in relation to the setting up of standards.

Informing JH of a meeting of the Commission on Standards at Somerset House on 28 May 1841.

Sends paper on 'elimination.' Requests recommendation from JH for professorship of mathematics at University of Virginia.

Sends back the slips. Does not approve of the phrase transcendentalists. Regrets that the subject forms a review; it is worth a treatise. Is working hard on his book. Would like to raise some rose trees for Lady Herschel.

Returns with grateful thanks the example of photographs recently sent him. They open up a new field of curious processes. Will not have much time this summer for photographic experiments as he is carrying out a series of investigations into the air of mines. Has been experimenting with the cyanurets.

Is thrilled about 4 aides to help with meteorological and magnetic observations. Points out that number of stations participating in horary observations increased to 22. Lists them. Hopes to go to Plymouth [B.A.A.S. meeting].

Will be receiving the official news soon that JH has been nominated Knight Commander of the Order of Dannebrogg. New magnetic observatory to replace the old one. Is grateful for JH's excellent song about the telescope.

JH's paper was read last evening and was well received. Astronomical Council has decided to print it immediately. Would like his opinion on the printing of various parts. Has paid John Arrowsmith's bill.

Sends JH sample of chemicals and paper to make calotype himself.

Regarding his recent experiments with light in crystals of alum etc.

Reports on Francis Baily's accident and his progress. JH's 'stars' were brought to the R.A.S. and examined by Baily. Mrs. G. B. Airy's health improving. Notes William Whewell's planned marriage.

Sends check for £100 being payment for JH's article on William Whewell's book. Will always be pleased to receive suggestions.