xvi, 502pp. In olive coloured, cloth-covered boards, with blind rule and faded gilt titles to spine (a little rubbed at spine ends, rubbed on upper edge). Internally a hint of page toning & manuscript notes on blank pages at rear. Occasional pencil underlining and marginal notes. Previous owner's name on front free endpaper. A discourse of logic as a science and art, and an elucidation of the principles and practices of logical thought and problem-solving.
