PRIESTLEY, Joseph. Experiments and Observations on different kinds of Air, and other branches of Natural Philosophy, connected with the subject. In three volumes, being the former Six Volumes abridged and methodized, with many Additions.Birmingham: Printed by Thomas Pearson and sold by J. Johnson, London, 1790. First edition, 3 volumes 8vo; Volume I: folding frontispiece, li (Dedicace, Preface, Contents), 411p.; 8 folding plates. Volume II: viii, 472p. Volume III: viii, 572p., [6p. Catalogue of books by Priestley]. Bound in contemporary English speckled calf, spine ribbed. Bookplate of J. Laissus (probably the chemist Joseph Laissus, 1900-1969). Binding a little dry, spine cracked, spine ends rubbed with the beginning of a split at the upper spine of the first volume, a rather good set nevertheless. Condensed edition, but with some articles added, of this important work first published in six volumes from 1774 to 1786. Joseph Priestley is generally credited with the discovery of oxygen around 1774 and its isolation in the gaseous state, although Lavoisier also claimed this discovery. DSB XII,145.