Regarding pens and suitable ink for various types. Further comments on the inscription for Francis Baily's memorial tablet.

Reply from G. A. Erman to JH's circular is best one yet received. Erman recommends calculating magnetic constants of 1829. ES suggests grant from B.A.A.S. to fund this. Alexander Humboldt will reply soon. Charles Wheatstone should describe new apparatus in letter to JH that can be sent to observatories.

Regarding magnetic establishments and observations.

Responds to comments about Robert Hunt [see JH's 1845-4-2]; talks about making an artificial eye.

Comments on JH's observing a 'falling star.'

Sending the manuscript of James Dunlop's paper.

As trustee of marriage settlement of CB's sister [Mary Anne Hollier], JH is asked to sign enclosed order. Reports distribution of money to sister and to H. J. Hollier.

Received reply from Karl Kreil in letter from Count Senftenberg, who owns private magnetic and meteorological observatory east of Prague run by Kreil's former assistant. ES asks JH to write letter to Clemens von Metternich, as requested by Senftenberg. High regard for Kreil's work.

Last letter to JH was private [see GA's 1845-4-1].

Wants information on dispersion/separation of light in plate or crown glass.

The President was requested to write to the East India Company about the observatories. Continuance of the magnetic observations at Greenwich was referred to the Committee of Physics. Cannot find where Nicolas Clement-Desormes's observations are published. Has been studying the wet bulb problem. Capt. Herbert has denounced the article on hygrometry in Brewster's Encyclopaedia.

Sending proofs and costs of four plates from engraver James Basire. Plate of large nebulae in progress. PS located old style type that JH prefers. Finances prohibit including all plates. JH must select which ones to include.

C. P. Smyth receives appointment as Astronomer Royal of Scotland. Again thanks JH for recommendation.

Will invite G. A. Erman to act as B.A.A.S. commissioner in reduction of 1829 Gaussian constant. Will try to remedy misconceptions of G. B. Airy. T. M. Brisbane will not get involved. Testing new magnetic instrument by Humphrey Lloyd for Arctic expedition. Invite C. F. Gauss to Cambridge.

Received thirteen replies to JH's circular; nine remain unanswered. Suggests printing these, before they are published by B.A.A.S, and distributing these along with second circular by JH.

Letter to accompany a gift of part of FB's latest work on psychology and knowledge, urging JH to encourage England to study psychology.

Gives detailed, official, replies to the questions in the magnetic committee circular [see JH's 1844-12-5].

Asking him to read GA's medal-speech.

Discourages the continuation of the magnetical and meteorological observations organized by the British.

James Basire to proceed with copper engraving of JH's 'Chart plate.'