XI/4 Still employing the emblem of violence mentioned in the note to the first of this Canto's illustrations, we move on to the representation of Art itself (of which this is of course a fragment). Virgil cites Aristotle to explain that Art is, as a child of Nature, a grandchild of the Lord. This lineage is explained via an upright triangle (the Trinity) atop a second, with a third image below, the last being more worked than the preceding two. The downward arrowed direction also serves (since this image ended the first volume of the original edition) to emphasise the continuing of the downward path along which Dante must guide us with his own art. -- Source of annotation: Marvin or Ruth Sackner.