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Showing 1–20 of 131 items
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Thanks GS for a number of his papers on railway bridge fractures, gravitation, and the spectrum.
Replies to several queries about papers of JH. JH describes the accidental production of some interesting copper salt crystals.
Thanks GS for 'canary' glass. Pleased with GS's 'photological' research, extending the spectrum.
Thanks GS for his paper on fluorescent spectra; JH is interested in having these rays used on quartz, hoping to find his 'thermic' rays acting.
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Writes to acknowledge receipt of a testimonial on behalf of [George] Wilson.
Comments on color as a sensation, and on GS's thoughts on 'lavender rays.'
Advises GS against spending £800 to verify the available drawings of Saturn; instead JH suggests alternative methods.
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Declines to serve on experimental committee for R.S.L.
Agrees to help in other ways than as committee member [see JH's 1855-2-25].
Asks GS about ordering instruments from [George] Wilson.
Inquiring about the cost of instruments being shipped.
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Comments on GS's ideas [see GS's 1856-6-27] about the nature of fluorescence. Asks for strong horseshoe magnets from R.S.L. to try to solve the problem of 'Mahomet's coffin.'
Thanks for the magnetic theory [see GS's 1856-7-9] and agrees it argues against JH's ideas about Mahomet's coffin. Describes some interesting magnetic experiments JH has seen.
No summary available.