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Acknowledges, in G. B. Airy's absence, receipt of a letter from JH.
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Looks forward to LJ’s volume [Observations in natural history (1846)].
Observations on what the world would call trifling points in natural history are always very interesting to him. Deplores their absence in foreign periodicals.
Is slaving away to finish S. American geology.
Thanks for JH's encouragement. Sends three bills for publication expenses [regarding J. J. L. Lalande's Catalogue of Those Stars in the Histoire céleste française. Letter completed 1846-8-16.]
No summary available.
Thanks JC for the writing material [?] JC sent. Pleased at the prospect of JH's eldest son [William] serving in the East India Company. Discusses developments in India and some chemical processes.
Discusses proposed survey of Glen Roy. Mentions Glen Roy theories of Agassiz and William Buckland. Includes a memorandum calling for a careful survey of the parallel roads of Glen Roy. Mentions M. A. Bravais ["On the lines of ancient level of the sea in Finmark", Q. J. Geol. Soc. Lond. 1 (1845): 534].
Received JH's order for £21.
Discusses magnitude determination. Refers to incident in which one of WS's sons will be removed from his position but not given poor references. W. S. Jacob sends double star measurements.
No summary available.
Thanks JH for kind letter. Asks JH to write letters of introduction to various people. Thinks [Roderick] Murchison will give good advice.
Wonders how [Christian?] Schönbein, who is in London, could best exhibit explosives. Hopes RM will attend upcoming meeting; [William] Stratford, who is ill, cannot. [Francis] Baily, [Thomas] Henderson, and [R.] Harris have died working on 'fatal' catalogue Stratford is doing.
Thanks JH for interest in his gun cotton. Will demonstrate its use next week. Includes list of items he will need to perform experiments.
No summary available.
The chemist C. F. Schönbein has invented a form of 'explosive cotton' and is looking for an opportunity to demonstrate it. JH is asking CP to help arrange matters.
Discusses JT's method for Great Circle sailing.
No summary available.