De augmentis scientiarum libri.
Leiden, Adrian Wijngaerden, 1652.
12mo. pp. (x) 684, (lx), lacking final two blanks. Roman and Italic letter, engraved title page depicting Bacon reading a folio volume with a wildly dressed figure holding a volume and representing the Book of Nature. Age yellowing, upper margin of first few gatherings cropped closely but with no loss, contemporary manuscript biographical note added to fly, ascribed to Thomas Fairfax (1693-1781), George Washington’s friend, patron and mentor, whose ex libris appears in pencil above, in C1800 polished calf by J.J. Cowling of Barnet (label on pastedown), with red morocco label on spine, with title and compartments gilt, all edges speckled blue.