Comments on observations of sun and sunspots, especially R. C. Carrington's book on the subject.
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.