HIP385767 Box of 12 friction primers (mixed media) by American School, (19th century); Private Collection; (add.info.: a friction primer or tube is a tool for firing cannons by means of the friction of a roughened wire in the friction powder or composition with which the tube is filled; used by CS Labs, Richmond Arsenal, 1864 Rifles during the American Civil War (1861-65);); Photo 穢 Civil War Archive; American, out of copyright.