English mathematician and astronomer (1819-1892). Autograph letter signed. Observatory Cambridge. 1 p. 8vo. (113 x 123 mm).
$ 196 / 180 €
To an unnamed Sir: "I have great pleasure in complying with your request for my autograph [...]". - In 1845 Adams dicovered a new planet, Neptun. - Adhesive residue spots verso. Traces of old folding.