Found his letter acknowledging the gift of his book awaiting him on his return from the continent. Reasons why he wrote the book. Has had letter from William Whewell. Hears that JH's health has not been good.
Found his letter acknowledging the gift of his book awaiting him on his return from the continent. Reasons why he wrote the book. Has had letter from William Whewell. Hears that JH's health has not been good.
Pleased to hear that JH was engaged on his old pursuits. Is grateful for pointing out his mistake. Regarding meteorological registration by means of photography.
Acknowledges receipt of a paper by [William] Pole, which JH will review.
Thinks it may be a good idea to utilize aluminium to coat the speculum of reflecting telescopes. Is shortly to take command of iron works and furnaces and hopes to carry out experiments to produce barytic glass.
Thinks that aluminum coating on telescope mirrors may work [see FK's 1856-10-9]; also suggests looking into flouric glass containing aluminum for lenses of low dispersion power.
Sends some photographs with comments. Pleased to hear JH is in much better health. Received a circular from U. J. J. Leverrier requesting meteorological information. Sends meteorological observations made at the Observatory during the last fourteen years.
Sends [William?] Pole's paper on color blindness, in case JH wishes to examine it.
Returned late on Thursday. Is gratified by JH's praise of his drawings of Saturn. Includes some further drawings and comments on JH's queries.
Made some observations of Jupiter after his last letter. Thought JH might be interested in seeing them. Would be grateful for any comments, which he will incorporate into his final drawing.
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