About a number of astronomical matters, including double stars. Provides observations and calculations for Gamma Virginis. Also comments on lunar models.

Asks JH's opinion on a paper on magnetism by Karl Reichenbach, which has some 'very extraordinary' statements.

Regrets to learn that JH is still suffering. Advises him to come to London for examination.

Was gratified to hear of the improvement in JH's health. Hopes it will progress.

Is very critical of a series of three foreign memoirs that JH believes certainly should not be published. Concludes with a strange postscript on catalepsy.

Informs JH that he is to work with a committee of the B.A.A.S. to prepare a map of the distribution of coal around the world.

Expands on the work of the coal map committee [see JP's 1845-7] by sending along the resolution that created it.

Is gratified by the mention of JM's name in JH's B.A.A.S. address, but thinks that JH has made a grave error in his castigation of the work of Auguste Comte. Comments on his theories.

Would like to send the Athenaeum to Comte together with a copy of JH's last note. Comments on the theory of Auguste Comte. Will be thankful to receive comments on JM's own book.

Informs JH that JH together with several others will be responsible for the distribution of the B.A.A.S. catalogue of stars.

Do as JM suggests. Further comments on JH's dispute with the theories of Auguste Comte.

Has nothing more to do than to thank him for his explicit letter. Will forward a copy of this letter to Auguste Comte.

Hears from his publisher that a second edition of JM's System of Logic is being prepared for the press, so would welcome any suggestions from JH regarding alterations or amendments.

Is grateful for JH's letter. Has already had criticisms of the chapter, which JH mentions. Will reconsider it.

Agrees with JH that the price of the B.A.A.S. catalogue of stars should be kept moderate to achieve the widest useful distribution.

Has communicated with [John] Phillips, and indicates that the committee will take responsibility for its actions [in distributing star catalogues?].

S. J. A. Compton [Lord Northampton] has addressed a private letter to Robert Peel [see GA's 1845-10-9].

Has collected information about coal deposits, but GG is very troubled that the committee [coal map committee of the B.A.A.S] has not yet met and has established no procedures. Describes some of the information GG has at hand.

AS JH understands the matter [see GG's 1845-12-23], GG is the only knowledgeable member of the committee, and so it will be up to GG to present information and propose some means of moving ahead. JH makes some critical remarks about the nature of B.A.A.S. committees.

Returns to JH, and comments on, the distribution lists [for the B.A.A.S. star catalogue].