Regarding patents, and quoting the results of experiments by foreigners without acknowledging the sources.
Showing 1–9 of 9 items
Regarding patents, and quoting the results of experiments by foreigners without acknowledging the sources.
Thanks TA for information on ice calorimetric work.
Thanks for, and comments on, some photographs of the solar corona.
Comments on the attitude of the French towards the Germans in light of the war.
Comments on sunspot activity.
Thanks RP for sending RP's Sun. Suggests a theory that the solar corona, rather than originating in the earth's atmosphere, is produced by reflection from meteoric dust. Informs RP that he has completed a catalogue of all observations of double stars.
Replies to RP's objections to his theory of the solar corona. Informs RP that William Herschel's larger telescopes were used as front focus. Suggests explanation of his father's disconfirmed discovery of four additional Uranian moons.
Mostly about how to deal with the implications of local attractions in geodetic surveying [see JH's 1870-11-17]; JH has had the mineral son John sent analyzed and sends the results. JH commiserates with daughter-in-law Mary's illness.
Comments on R.S.L. acquiring Kew Observatory building for creation of magnetic observatory [see JG's 1871-2-13].