Suggests remedy for bronchitis problem in JH family. Young John Herschel's work on nebulae pleases CP. Comments on William Huggins's work on solar spectra.
Suggests remedy for bronchitis problem in JH family. Young John Herschel's work on nebulae pleases CP. Comments on William Huggins's work on solar spectra.
Suggests that Cupples weigh puppies from one week old, rather than two weeks old.
No summary available.
No summary available.
On English edition of Für Darwin; CD’s gratitude and admiration.
Agrees with BS's objection against performing daily analyses of individual barometric pressure records. Believes monthly analyses of importance for observing laws of annual pressure.
Is fully satisfied with the objections in WM's letter regarding the individual records of barometric pressure. Gives advice on how the records should be shown.
Notices in letter of last May JH's postscript about the rate of color blindness occurring to overworked or ill artists, and doubts it becomes di-chromic, but merely a 'weakness' of vision.