Ton′ing.
(Photography.) The treatment of a positive photographic print with a weak solution of gold, in conjunction with other modifying chemical salts, by which the whole or a portion of the deposit of metallic silver is replaced by metallic gold in fine division. The effect is to give permanency to the print, subduing and modifying the disagreeable color, and substituting various shades of purple, black, blue, brown, and gray.
Tongue-support. |