The graphic arts; modern men and modern methods (1921)
Pennell, Joseph, 1857-1926 · Chicago, Ill., Published for the Art Institute of Chicago by the University of Chicago press · leaf 32
n the block, standing inrelief. The next form of engraving was on metal.In that, instead of leaving the lines in relief, theengraver dug holes and pits and dots into the metalplate, leaving the intervening spaces standing in-stead of cutting them away, as in the wood block.The ink was then rolled… … PAGE 12 WOOD AND METAL PLATES AND TOOLS USED IN EN-GRAVING. DRAWN BY JOSEPH PENNELL