Has sent RW a copy of JH's catalog of nebulae and also a biographical sketch of JH's father. Thanks RW for and praises RW's works on sun spots and on the aurora borealis. Notes that G. B. Airy is now disposed to accepting the existence of solar 'willow leaves.'

Thanks RW for sending RW's Mittheilungen and RW's Neue Untersuchungen. Replies to RW's queries about JH's ancestry and about the current state of JH's father's largest reflecting telescope.

Thanks RW for sending him a photograph of RW; sends photograph of JH in return.

Thanks RW for sending copies of RW's memoir on JH's father. States that JH has now revised a catalogue of all JH's father's double stars.