When he received JH's request to give a lecture on American geology he did not treat it seriously. Now R. I. Murchison has made a similar request so thinks he could work up a popular lecture on the Mississippi Delta. Will keep off his old ground.

H. C. Oerstedt has been elected to the Society to replace F. W. Bessel, who has died. The Society is lacking one part of the Memoirs of the R.A.S.

Has been on the Continent, which accounts for the delay replying to JH's letter of June. Regrets he cannot give an answer to JH's queries regarding the constitution of the ether. Fears his hypothesis on the density of the ether is not clear as it has misled JH. Has read Michael Faraday's papers with eagerness.

Observatory work slowed since William Mann's absence due to head injury. C. P. Smyth's replacement not yet arrived. Regrets lack of assistants; wants to complete triangulation at Bushman Flat.

William Mann returns to England still in poor health. Expresses concern over running of Edinburgh Observatory by C. P. Symth. Regrets poor data from Cape Observatory on Comet of 1843. Observed Comet Gambert. Situation with Caffres hostile.

Suggests JH take trip to Continent to recover. Training a naval officer and the son of John Montague, Colonial Secretary, as observatory assistants. Describes outbreak of war with Caffres in detail.

Relating recent events in the latest Caffre war. [George] Childe has arrived and is engaged in preparing his rooms. Has had a letter from C. P. Smyth at Edinburgh. Price of commodities are rising rapidly at the Cape. Hopes that JH has taken expert medical advice.

Truly grateful to hear such a good report of JH's health. Should continue the medicine. Hopes to avail himself of JH's kindness when he has leisure.

Happy to hear that JH is to preside over the Physical and Mathematical Section. Will present Miss Robina Young to Lady Herschel before leaving for Southampton.

Has JH any comments on the first volume of JM's Logic, which the publisher wishes to prepare for a second edition.

Thanks for his remarks, which will be attended to. Comments on the various alterations he will make in line with JH's criticisms.

The first volume of JM's Logic has been printed and the printers require what is ready of the second volume. In Book Three would like comments from JH regarding the difference with P. S. Laplace's theories.

JH's second letter has convinced him. Has now written a new conclusion to the chapter showing the principles of P. S. Laplace in a new light. Does not think Laplace's example is a fair type. Has already rewritten the chapter on the Doctrine of Chances.

A notice of meeting of the B.A.A.S. coal distribution map committee.

Thanks for his congratulations. Gives a resume of the events leading up to the knighthood. Saw Hugh Falconer yesterday. Sister-in-law has just died.

Giving days on which the Council could be called. Who shall be president of Section 'A'. Could JH think of suitable persons for Chairmen and Secretaries? Sir J. Richardson is on the spot and will be president of the zoologists.

Agrees with JH that Charles Lyell is the man to give an evening at Southampton. Richard Owen is giving the other evening lecture. Suggests that Lyell lecture on the United States. Regarding leaders for the other sections.

Received JH's letter without the enclosure from C. P. Schönbein, but has now received a letter from Schönbein. Has advised him to come to the Southampton meeting. Has written his discourse and would welcome a paragraph from JH on physical science and on some of the foreigners expected at the meeting. What can he say about Carlo Matteucci? Had letter from William Whewell, who wishes to meet H. C. Oersted.

Thanks for his letter and C. F. Schönbein's. Will go on board the Excellent via rail to Gosport. Encloses what he has written on Michael Faraday for JH's amendments. Regarding the dinners at the meeting.

Thanks for his letter and the enclosure of Dr. Andrew Smith. Will now write to C. R. Darwin. Can now wait on the Chancellor of the Exchequer.