Asks for details of WL's system of speculum polishing and telescope construction as JH is preparing an article on telescopes for the Encyclopaedia Britannica.
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Asks for details of WL's system of speculum polishing and telescope construction as JH is preparing an article on telescopes for the Encyclopaedia Britannica.
Responds to GA's account of his tour [see GA's 1859-8-13] with interest, and adds a description of JH's poor health.
Sends spectra obtained by Ioduret of potassium. Gives details of his latest photographic experiments.
Thanks for some verses; comments on the current state of Indian religious society.
Requests information about specula for telescopes, especially silvered glass ones.
Congratulates AD on a successful move to a new house.
Returns proof for JH's ['On a New Projection of the Sphere']. Requests 25 copies when printed.
Writes about the activities of several family members, and then comments on the location of a railway extension, which will come closer to Collingwood.
Talks about the beauty of the flowers at Collingwood, and then comments on his Essays Q.E.R.
Recounts experiments JH conducted on the action of the solar spectrum on various silver salts. Explains how JH produced his solar spectrum.