Has a micrometer under construction and gives details. Pietro Prandi has published a second memoir on mercury covered with sulfuric acid.
Showing 41–60 of 113 items
Has a micrometer under construction and gives details. Pietro Prandi has published a second memoir on mercury covered with sulfuric acid.
Sending a paper for the R.S.L. Humphry Davy does not approve entirely of his arguments. Would be pleased if JH would glance over it and then inform Davy that he has it.
Discusses casting and construction of telescope speculae.
Will send JH some barometric observations; describes the barometers with which the observations were made.
Was grateful for JH's letter and detailed notes. Hopes he will attach a copy to the paper when he communicates it to the R.S.L.
J. J. Littrow's paper in F. X. von Zach's April [Correspondence astronomique, géologique, hydrographique et statistique] is only 'a new hash' of [F. W.] Bessel and no improvement.
Send plan of furnace to TY or Michael Faraday before tomorrow's committee meeting.
Describes the pendulum experiments he and G. B. Airy are carrying out in Dolcoath Mine.
Kept busy by writing. Works with Teodoro Monticelli. Expects Captain [Richard] Copeland to visit.
Thanks JH for material from AS of London. Mentions 'new comet.' Informs JH of being nominated to the list of foreign members in the American Philosophical Society.
Asks for information, on behalf of JG's father, about a Cambridge man.
Talks about Josef Fraunhofer's failing health and his making of flint glass.
Reports that an accident destroyed one of the pendulums used by G. B. Airy and WW in their Dolcoath experiments. Obtained some results and believes in the general soundness of the method employed.
Instructions regarding the printing of his paper the 'Figure of the Earth' in the transactions. Details of the disappointing expedition to Falmouth.
A note to accompany one of CH's writings, together with some comments on comet sightings.
Thanking him for his letters of introduction to Paris. Remarks on one of GA's papers; one of his calculations incorrect.
Has received a package of books from JH, some of which will be sent on as instructed. Is interested in the work of JH and James South on double stars. Also comments on parallax measure of the sun and on transits of Venus. Wants to respond to P. S. Laplace's theory of Jupiter and Saturn.
About JG's children and his plans to move to Hastings.
No summary available.
Accepts dinner invitation. Hopes no emergencies arise that would prevent their visit.