Is grateful for JH's kind action [see AG's 1863-1-30]. Address the parcels to the London address of Hachette.
Is grateful for JH's kind action [see AG's 1863-1-30]. Address the parcels to the London address of Hachette.
Giving results (including diagram) of a comparison of earth currents and magnetometer disturbances.
Is satisfied with WB's work on meteorology. Comments on WB's intention to diagram the moon.
Offers a few ideas to GA [see GA's 1863-2-9], but does not have a coherent explanation.
Has found a few minor errors in the calculations checked so far [see GA's 1863-2-6]; comments on magnetic tracings JH received from GA.
Will take into account JH's suggestions [see JH's 1863-2-13] and see where this leads.
Regarding the gravimetric balance.
Sends [Warren] de La Rue's letter on Southern[?] Telescope for JH's review. Swedish Academy working on reviving project of measuring arc of meridian.
Suggestions on improving JB's gravimetric balance, constructed on principle of 'Bifilar suspension.' Refers to 1861 report of similar invention by J. A. Brown and another article on this topic.
Sending him a correction for his article on meteorology relating to the rainfall of Bristol. Intends publishing a book on climate and will send him a copy.
Is JH interested in seeing G. F. J. A. Auwers's catalogue of JH's and William Herschel's nebulae?
Did JH receive G. F. J. A. von Auwers's catalog of JH's and William Herschel's nebulae?
Asks JH to comment on the scientific merit of a large number of plates on solar spots sent to R.S.L. by Richard Carrington.
Would like JH to add his signature to Hind's certificate for the R.S.L., and then forward it to G. B. Airy.
Returns [Warren] de La Rue's letter and discusses its contents, especially the making, mounting, and mirror for de La Rue's reflecting telescope.
Expresses interest in Swedish plan to survey Spitzbergen and to measure meridian of arc. Discusses gravitometer being developed by [Jacques] Babinet.
Might have saved JH some work if he had known what G. F. J. A. Auwers was doing [see GA's 1863-2-20]; has found some more errors in nebula calculations.
Cruel illness has kept him from work for a while. Just finished Histoire des sciences mathématique et physique chez les belges. AQ's son works with proper motion, double and multiple stars, and absolute positions.
Recalls translating Outlines Astr. into Chinese. Wishes to visit JH before returning to China.
Heard of JH's 'domestic affliction.' Postpones visit till next week.