Comments on observations of sun and sunspots, especially R. C. Carrington's book on the subject.
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Comments on observations of sun and sunspots, especially R. C. Carrington's book on the subject.
Is unable to attend another meeting of the Standards Committee, due to severe illness; describes the best way to pack the standards away, and talks about the strange behavior of gallic acid.
Coincidences between observations of a meteor seen by EC and another account.
In response to HS's query [1864-3-1] about the influence of Auguste Comte on English scientists, JH refers HS to JH's 1845 B.A.A.S. presidential address. States that calculating the motion of a projectile through a resisting medium is extremely difficult.
Announces son William's engagement to Emma Hardcastle; warns son John against the Anglo-Indian ladies; JH comments at length on a problem in surveying, and concludes with the news that daughter Francisca's health is improving.