Has received the letter and invitation. Will travel to Etchingham station and walk to Collingwood.
Has received the letter and invitation. Will travel to Etchingham station and walk to Collingwood.
Asks GA for clarification of the value for the 'mean equatorial horizontal parallax' of the moon, since two different values are given by different authors.
Offers some thoughts on JH's problem [see JH's 1857-9-29], but needs additional time before commenting more fully.
Will send JS's treatise; wishes could offer something 'more intrinsically valuable' as token of gratitude for everything.
Is returning C. P. Smyth's paper ['Report on the Teneriffe Astronomical Experiment of 1856,' [R.S.P.T., 148, 165-], believing it now 'unobjectionable for publication.'
Thanks for photograph of the moon.
Has not been able to go to Kew Observatory yet. The photoheliograph has to await John Welsh's return from Scotland. A reflector with a diagonal mirror would be suitable for celestial objects. Has now removed to Cranford.
Thanks WW for letters. Has been visited by [ [J. B. L.] Foucault; impressed by Foucault's instruments. Notes large number of sunspots.
Is honored by his kind invitation to visit him, which he hopes to accept. Has great respect for JH's work.