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Showing 21–40 of 40 items
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Suggests course of action regarding 'Gen'l. Cullen's [?]' hydrometric observations submitted to R.S.L.
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Asks JH to look at a letter by John Forbes Watson, whose paper the R.S.L. recently refused to read.
Encloses newly-discovered proof that John Forbes Watson's wet bulb depression was not a clerical error.
Plans date and time for first ascent of balloon experiment. WS's daughter has fallen in love with JH's son William.
Describes travels abroad and their educational value, news on balloon ascents, barometer corrections, Henri Regnault's hygrometer, invention of electric weaver and other new applications of electricity throughout Europe.
Interprets [John] Dalton's theory of the nonelasticity of gas particles, expressing its limitations, particularly in regard to a Mr. Paton's paper.
Before meeting of Balloon Committee, requests JH's opinion on value of renewing balloon ascents.
Urges renewal of high balloon ascents with periodic observations both to further knowledge of law of decrement of temperature and pressure and for 'ulterior investigations.'
Stresses importance for Balloon Committee of obtaining corresponding temperatures and pressures; describes two highly sensitive thermometers that might be built for this purpose.
Updates JH on activities of Balloon Committee, and thanks him for suggestion regarding temperature measurement. Mentions improving health of Mrs. Sykes.
Invites JH to meeting of Balloon Committee and updates everything in previous letter.
Asks for JH's opinion on balloon ascents, to be presented at next Balloon Committee meeting. Explains enclosed letters and diagrams regarding ascents; mentions that new thermometer suggested by JH is under construction.
Communicates Balloon Committee's feeling that balloon should not go as high as JH suggested, despite Henry Coxwell's having safely ascended higher. Reports successful presentation of previous results, hoping that Committee will find sufficient funding to continue.