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Acknowledges receipt of a paper by [William] Pole, which JH will review.
Needs more time for reviewing Pole's paper [see JH's 1856-10-12].
Is sending in JH's report on Pole's paper [see JH's 1856-11-9].
Thanks the council of the R.S.L. through GS for the gift of a portrait of Nicholas Copernicus.
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.
Writes to clarify his understanding of the word 'fluorescence.' Asks JH to review a paper on color-blindness.
Further thoughts [see GS's 1856-6-27] on the nature of fluorescence, including that it is a transient phosphorescence.
Continues comments on fluorescence from letter of 1856-7-8; then shows mathematically that JH's solution for the problem of Mahomet's coffin [see GS's 1856-7-1] will not work.
Comments on one of the magnetism experiments JH described in his letter of 1856-7-14.
Sends [William?] Pole's paper on color blindness, in case JH wishes to examine it.