Dismisses the lectures of a Mr. Parallax, who is going about the country lecturing against the basic views of science, and using JH's ideas in support.
Showing 1–11 of 11 items
Dismisses the lectures of a Mr. Parallax, who is going about the country lecturing against the basic views of science, and using JH's ideas in support.
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.'
Regarding report on magnetic observatories to be laid before R.S.L. president and council.
Comments on various specimen photographic papers JH is sending; JH believes he has isolated a metal he wants to call '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.
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.
On the definition of an island, and an invitation to lecture about a comet.
Please distinguish between the genus Wellingtonia and the genus Sequoia.
Discusses the use in photography of a metallic substance named Junonium.
Gives a detailed account of the wanderings and visits of JH and son John; among other things they observed a comet at night.
Discusses various arrangements of the chemical elements, including those of [J. P.] Cooke and [John] Mercer. Asks WW about capillary action.