Comments on GA's theory of the thermo-electric origin of terrestrial magnetism.
Showing 1–6 of 6 items
Comments on GA's theory of the thermo-electric origin of terrestrial magnetism.
EQ may forward packages for JH to [John] Stewart in London. Discusses [James] Grahame. Pleased EQ liked his translation of the Iliad.
Is very pleased with resolution about the observations of Charles Rümker [see Edward Sabine's 1867-8-30].
It appears that the Indian government has now approved the introduction of the metric system; JH is very upset.
Provides sources of information about polarization, spectroscopy and solar physics for son John, who is continuing his preparation for observing the solar eclipse [see JH's 1867-9-12].
Has been observing sunspots and talks about sunspot cycles; JH is glad to see that son John has been practicing observing with the spectroscope in preparation for the Indian solar eclipse [see JH's 1867-6-12].