Needs Zeitschrift volume; then JH may have it back [see JS's 1864-1-15]. JH's article should be 10-12 pages. Compliments JH's writings as popular without being 'popularising.'
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Needs Zeitschrift volume; then JH may have it back [see JS's 1864-1-15]. JH's article should be 10-12 pages. Compliments JH's writings as popular without being 'popularising.'
RC's book [Observations of the Spots on the Sun] is done. First copy, exhibited at R.A.S. last week, was well reported in R.A.S.M.N. Will send copy to JH.
Formulas for determining rotation rates of sunspots relative to latitude on solar surface. Believes equatorial parts of photosphere are dragged faster than others. Speculates on rotation rate of solid body below (if such exists).
Gratitude for JH's gift of Caroline Herschel's autograph manuscripts to R.A.S.
Received JH's two letters acknowledging receipt of 'Volume of Tables of Heights' of the Great Trigonometrical Survey of India. Hopes to visit JH and discuss phenomenon of terrestrial refraction. Received valuable assistance on tables from JH's son John.