Herschel, W. — Observations on the two lately discovered celestial bodies.

London, The Royal Society, 1802. Large 4to (29.1 x 22.8 cm). pp. 213-232. Disbound. = An original astronomical contribution, taken from the Philosophical Transactions for the year 1802 (not from the later, abridged edition). In this work, Herschel discusses two moons discovered by the Italian astronomer Piazzi, orbiting Uranus (here still referred to as the Georgian Planet). Uncut. Edges a bit soiled. A few pages with a damp stain in top margin, not affecting text. A good copy.