Thanks for the observations WK has sent.
Thanks for the observations WK has sent.
Describes conditions and instruments at Edinburgh Observatory. Observatory assistant Alexander Wallace works on reduction of Thomas Henderson's transit observations.
Thanks JH for spotting error in a publication about the Edinburgh Observatory. Discusses 'the planet that is expected to be found beyond Uranus.' Asks JH to help him send astronomical news to Thomas Maclear.
Congratulates JH and Margaret Herschel on birth of a daughter [Francisca?]. Asks JH's opinion of the ideas of 'lines of force' and 'lateral shakes.' Conducts a force experiment with J. P. Gassiot.
Hopes that he will accept the accompanying pamphlet. Would like to make his acquaintance at some future date.
Thanks for his letter and friendly sentiments. Hopes to meet him at Southampton, though there are difficulties.
No summary available.
Gives JH directions to Kew Observatory.
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.
No summary available.
Will call at Collingwood. Wants to show JH some experiments and asks JH to have phosphorous and starch ready.
Discovered an agent that renders his paper tough and waterproof. Sends sample for JH's inspection. Treated paper is highly explosive and can discharge a gun.
Discusses his explosive matter [see CS's 1846-3-24], which can discharge rifles and cannons. Four ounces of his gun cotton demolished an old tower in town.
In London to demonstrate gun cotton. Wants JH to mention his name to influential members of government. Promises JH will be surprised at its 'wonderful effects.'
Thanks JH for kind letter. Asks JH to write letters of introduction to various people. Thinks [Roderick] Murchison will give good advice.
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.
No summary available.
No summary available.
No summary available.