Scope and Contents Unnumbered manuscript notes and letters, with tables and sketches on water moving as a mass, the construction of hydraulic machinery, salts and specific gravity, and the stability of ships, and a printed volume of James Brown's 1785 booklet on "Directions for Proving Any Kind of Spirits, or Strong Waters, by Glass Bubbles". Interesting illustrations include a cutaway drawing of a piston, ca. page 11; cutaway of an oil lamp, ca. page 50; conjectural drawing of a pedestrian wheel for fording...