hardcover. 62pp. modern 1/2 morocco, marbled boards; uncut, ex-lib. Paris: Imprimarie Royale, 1777. First Edition. Very good.
Chemis-physician-pharmacist, Sage was "the first person to introduce into France systematic assaying and anlysis." (Ferguson). He also established the School of Mines and Museum of Mineralogy. This early work went through three editions within a year.