This paper reports empirical observations of five outdoor bronzes that received a coating of Incralac in April and May of 1972. Incralac is an acrylic solvent-type coating plus corrosion-inhibitor formulated by the International Copper Research Association primarily for industrial and architectural application in the maintenance of unpatinated bronze and copper. Incralac provided good protection to the five bronzes over a two-year period exposed to an outdoor urban environment. On bronzes that received an additional coating of microcrystalline wax, periodically reapplied, the Incralac coating lasted for almost three years. The coating lasted least well on a patina that showed the most degradation prior to application. Efforts presently being made in adapting the use of Incralac to the special problems of outdoor sculpture will be discussed, including: application, removal, and combination with additional films for gloss adjustment, increased durability, and resistance to moisture in the special case of fountain sculpture. Author's address: Center for Archaeometry/Box 1105, Washington University, St. Louis, Missouri 63130, U. S.A.