London: Royal Society of London, 1781. Three Quarter Leather. First Edition. 4to. Two papers published within the annual proceedings report of the Royal Society of London. 4to. Brown three quarter leather binding with five raised bands at spine, red leather patch title, gold embossed titling and blind embossed rose emblems in compartments without titles; marbled paper insets on front and rear boards. Clean within. Trifold Tab 11 illustrating Herschel's description of his telescope and observations tipped in at p. 256 is very clean with no tears or losses. Pages were trimmed when rebound. Very Good.
Herschel's first scientific paper, on the Periodical Star and the first description of his telescope.