Regrets to hear of AM's sad losses. Would like him to withdraw quarterly amounts and give them to Caroline Herschel.

Thanks for sending his book on the Correspondence of James Watt. Hopes to give it the attention it deserves, but meanwhile comments on the water controversy of Henry Cavendish, Joseph Priestley, and James Watt.

Can raise no objections to being president of the B.A.A.S. for 1845, but will be unable to be in York this year.

Robert Peel has suggested that the Admiralty has money available to pay for improvements in scientific instruments of value to navigation.

Returns, with many thanks, the report of George Everest. Gives adverse comment on the alterations that Everest has made to some of the instruments.

WM is not the first person to write to JH on the application of photography to astronomy. Comments on the question and gives some of his own views on the subject.

Hears with pleasure of the peace reigning at the Cape between the Caffres. The Boers are a different proposition and JH agrees with GN's policy. J. R. Innes called in on his way to Scotland. Weather in England is gloomy, like the political events.

Encourages GA to ask the Admiralty about the implications of Robert Peel's statements [see JH's 1845-9-29 or earlier].

Thanks RH for a sample of Daguerreotype paper. Comments on some aspects of the action of 'thermic' rays and 'chemical' rays in photography.

Comments on some papers on vision and photography by Mr. Moser, and compares this with some of JH's own writings on the subject.

Replying to GP's 1847-6-28, is worried about the amount of time that will be required of JH in preparing a suitable biography; does not want it to interfere with other work on hand.

Asks WP to recall the particulars of an experimental session [see WP's 1823-3-11] where JH tried to demonstrate the polarization of light by an electrical current in a coil of wire.

Sends copies of plates and details about them, and expects printing of JH's Cape Results to begin early in 1846.

Recommends that William Whewell be appointed Master of Trinity College.

Will now work with S. J. A. Compton, the President of the R.S.L., to try to get fair treatment for another applicant for the Admiralty money [see GA's 1848-9-25].

Offers HO a small requiem, which JH's family sung at the beginning of the astronomical year at the memorial of the 40-foot reflector.

Is trying to reduce the ill feeling between GN and Andries Stockenström relating to the governing of the Cape colony; JH feels hampered by limited information.

Expresses his great appreciation for informing JH of the honor being conferred by making JH a Knight Commander of the ancient and venerable order of Danneborg.

Asks HO if he can discover, without mentioning JH's name, what it might cost JH to be formally enrolled in Denmark for the honor he has received [see JH's 1841-6-20].

Thanks HO for his effort on JH's behalf [see JH's 1841-10-10], and then describes some of his photographic experiments.