London: John W. Parker, 1843. 1st Edition. Hardcover. Very Good. 1st Edition. Hardcover. 8vo - over 7¾ - 9¾" tall. 8vo (221 x 142 mm). xvi, 580; xii, 624 pp. Original publisher's half cloth, spines with original printed paper labels (rebacked with original spines laid down, minor rubbing to boards and extremities, paper labels browned and soiled, spine cloth spotted, gathering b in vol. I unstitched), pages uncut. Text little age-toned, tear at lower blank margin of one leaf repaired. Provenance: both volumes inscribed to title-page versos, 'John Commins, 1845' and 'Given to Wm. Merryfield, December 24th 1859'. A very good, clean, unfoxed and unmarked set. ---- Kress C.6398. FIRST EDITION of Mill's popular and infuential treatise on inductive logic. In this work Mill formulates just five principles of inductive reasoning (known as Mill's Methods) which determine whether causes and effects are connected. This method produced a system which became an important source for all the…