Is slaving at South America – ¾ finished.

Has discovered geologists never read each other’s works – "the only object in writing a book is a proof of earnestness … Geology is at present very oral".

Has done Edmondston’s Galapagos plants.

Dispute between Edward Forbes and H. C. Watson.

Returns corrected proof of his descriptions of S. American fossil shells [South America, appendix].

Has nearly finished South America.

Pleased to hear JDH has worked out identical and representative species of N. Temperate and Antarctic regions.

Geoffroy Saint Hilaire’s "loi du balancement" as applied to plants.

CD jaded by, but has nearly completed, South America.

Cannot come to Down to meet B. J. Sulivan as W. H. Harvey is calling.

Plant distribution and soil nature.

Forbes’s modification of Watson’s types of vegetation.

JDH will write comparison of representative plant species of the N. and S. Hemispheres.

No summary available.

In case he has not received a letter from Berlin he sends details of the planet of U. J. J. Leverrier.

Hopes his friends will support the publication of his Barometrographia, which will be exhibited at the forthcoming B.A.A.S. meeting.

Will distribute the prospectuses of LH's book as desired, but regrets he will be unable to subscribe for a copy himself as its price is too expensive for his means. Pleased to hear of his good health.

Regarding Benjamin Peirce's Elementary Treatise on Sound. Can lend him his own copy if JH has no copy.

Talks about considerations to be taken into account when building telescope specula, especially large ones.

Details of WL's observations of the seventh satellite of Saturn.

Believes that the observations WL has made are quite sufficient to establish the existence of the seventh satellite of Saturn.

Would like to see C. F. Schönbein's invention tried but has not the means to afford any assistance at the moment. Understands that Edward Sabine is to introduce Schönbein to the Master General of Ordnance, so he will be in good hands.

Protests erroneous impression in today's report of JH's conduct at closing meeting of B.A.A.S. Does not know what gave rise to T. D. Morris-Stirling's remarks regarding electric telegraph. Witnesses confirm that JH did not malign British science. [JH annotation: Printed 21 Sept. 1846.]

Received copy of TM's letter to the Times and sends copy of JH's letter to the Times. Recounts words that JH and TM used; wishes 'foam' had been used instead of 'scum,' to prevent misunderstanding [at B.A.A.S. meeting].

Invites JH to join SB and Mr. Bold at 'our stable' tomorrow evening. Hopes [J. B. A.] Dumas will arrive from Paris then.

Sends results of RM's experiment on wave motion and earthquakes that RM will report at B.A.A.S. meeting in Southampton. Proposes new committee to implement RM's project.

[Marked 'Private.'] Encloses copy of TM's letter to the Times responding to news report of TM's altercation with JH and [T. R.] Robinson at B.A.A.S. meeting.

Challenges JH's letter in the Times today justifying JH's remarks at B.A.A.S. that Charles Wheatstone invented electric telegraph. Believes Wheatstone 'pilfered' invention from Mr. Baines.