Philosophical papers : being a collection of memoirs, dissertations, and experimental investigations relating to various branches of natural philosophy and mechanics, together with letters to several persons on subjects connected with science and useful improvement.
London: T. Cadell, Jun. and W. Davies 1802. First Edition. xxiv, 390,  pages plus 14 engraved plates. 8vo. Brown library buckram with library label on spine. Library bookplate and deaccession stamp on front endpapers otherwise clean internally (noting minor foxing throughout). Although marked Volume 1, this was the only volume published. Very Good. Cloth. 
Contains various papers including Experiments on Gunpowder, Experiments made with Cannon and some attempts to improve Field Artillery, Experiments on Production of Air from Water, Intensities of Light emitted by Luminous Bodies, Experiments on Coloured Shadows, Conjectures respecting the Principles of the Harmony of Colours, Enquiry concerning Chemical Properties attributed to Light, etc. Thompson was well known for his technological innovation, and he studied gunpowder and illumination throughout his life. (DSB)