Assures EW that earth is spheroidal and that sun and planets follow laws of gravitation, contrary to absurd claims of Mr. Parallax. Regrets that Parallax is using JH's name to support 'ridiculous opinions.'
Assures EW that earth is spheroidal and that sun and planets follow laws of gravitation, contrary to absurd claims of Mr. Parallax. Regrets that Parallax is using JH's name to support 'ridiculous opinions.'
Has now had time to examine the stereoscopic photograph of the moon. Thinks it is a wonderful effect and opens up a new field for terrestrial objects.
Comments on various specimen photographic papers JH is sending; JH believes he has isolated a metal he wants to call 'Junonium.'
On the definition of an island, and an invitation to lecture about a comet.
Discusses the use in photography of a metallic substance named Junonium.
Has just returned home and found the Photographic News and the queries regarding chemical experiments and photography. Gives details, but regrets he has not published much on it yet as he is still experimenting.
Discusses various arrangements of the chemical elements, including those of [J. P.] Cooke and [John] Mercer. Asks WW about capillary action.
Regarding report on magnetic observatories to be laid before R.S.L. president and council.
Please distinguish between the genus Wellingtonia and the genus Sequoia.
Discusses the use of the stereoscope, including stereoscopic views of the moon and sun. Also discusses the appropriate stereoscopic angle.
Agrees to write memoir [of George Peacock], but this will take some time as he is taking son [John] to Southampton to leave for India.
Describes JH's visit to an old, bedridden friend [Bullar?]; JH has seen son John on board ship at Southampton, and then comments on the beauty of the country, which JH enjoyed as he traveled.
Has put son John on board ship and they both looked for Mrs. Russell [?] but could not find her; JH reports on the health of daughter Amelia and about the time of their return home.
Giving reply for GA to send to Toronto. Is grieved to hear of Edward Sabine's illness.
Has not read article on binocular vision. Gives his views on this subject. Sends a copy of a paper he read at Leeds on visual impressions.
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.'
Regrets he has kept his theory on harmony so long; returns it and comments on various aspects.
About biographical information on George Peacock.
Thanks for WW's views on capillary action. Asks for facts about George Peacock on whom JH was writing an obituary.
Asks GA to help in determining cost of one observation station in Peking [see Richard Owen's 1858-12-18].