The Treatment of Two Overdoor Paintings by Francois Boucher
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1996 A I C PAINTINGS SPECIALTY GROUP POSTPRINTS Papers Presented at the Twenty-Fourth Annual Meeting of the American Institute for Conservation Norfolk, Virginia June 14-15, 1996 Compiled by Kenneth Bé The 1996 AIC Paintings Specialty Group Post-Prints is published by the Paintings Specialty Group (PSG) of the American Institute for Conservation of Historic and Artistic Works (AIC). These paper have not been edited and are published as received from the authors. Responsibility for the methods and/or materials described herein rests solely with the contributors. These should not be considered official statements of the Paintings Specialty Group or of the American Institute for Conservation. The Paintings Specialty Group is an approved division of the American Institute for Conservation of Historic and Artistic Works but does not necessarily represent AIC policies or opinions. The 1996 AIC Paintings Specialty Group Post-Prints is distributed to members of the Paintings Specialty Group as of 1996. Additional copies may be purchased from the AIC, 1717 K Street, NW, Suite 301, Washington DC, 20006. TABLE OF CONTENTS Brigid Sullivan 1 Reviving the Tomb: Recovery of Mural Paintings in General Grant National Monument Steven Erisoty and Susan Duhl 11 The Collaborative Treatment of Edith Emerson's Scenes of Philadelphia Wall Mural Catherine S. Myers 14 A Discussion of Mural Painting Technique: Constantino Brumidi's Paintings at the United States Capitol Julie K. Barten 19 The Recovery of Fra Filippo Lippi's Four Saints: Reclaiming an Abandoned Transfer Barbara R. Luck 27 Virginian Luxuries/Portrait of a Man David Goist 28 Treatment of Virginian Luxuries/Portrait of a Man Rustin Levenson 35 Loose Lining Elma O'Donoghue 37 The Treatment of Two Overdoor Paintings by François Boucher Norman E. Muller 54 Herri met de Bles's Road to Calvary in Context Serena Urry 62 Material and Technical Analyses of a Portrait of Eleonora of Toledo by Agnolo Bronzino and Workshop Lydia Vagts 68 "A very wonderfull Performance:" The Paintings of John Singleton Copley in America REVIVING THE TOMB: RECOVERY OF MURAL PAINTINGS IN GENERAL GRANT NATIONAL MONUMENT Despite a presidency marked by graft and corruption, Grant remained a larger-than-life hero to the American people as the savior of the republic during the Civil War. When Grant died in 1885, the scale of public mourning was immense. The newly formed General Grant National Memorial Association organized a subscription campaign to raise money for a tomb on a grand scale to commemorate the General. The competition for design of the tomb was awarded to John Duncan. The plan was ambitious, and heavily influenced by tombs of other great military leaders, most notably, the tombs of Napoleon and Mausoleus, the 4th century Greek ruler of Asia Minor. Construction of the tomb began in 1891, and was completed in 1897. (Fig. 1) An estimated 150,000 people attended the state funeral, and Grant's Tomb became a popular tourist attraction as well as a favorite promenade and picnic area along the plaza and in nearby Riverside Park. Increasingly heavy use took its toll in the level of upkeep and appearance of the tomb. By the mid-1930's, in a joint effort by the WPA and the Memorial Association, the Tomb received a major renovation, including commissioning wall paintings for the two plain white circular rooms, behind the crypt oculus. These rooms, known as "reliquary rooms", had been designed especially by Duncan to house the battle flags and regimental colors of Grant's military campaigns displayed in massive glass and decorative iron octagonal cases. William Dean Fausett, a young man just starting his art career, was commissioned to design and paint a dignified and appropriate mural that would enhance rather than deflect attention away from the flag cases which were to remain the central focus of the reliquary rooms. He completed the work between 1936-1938. No color photograph remains of the finished 1938 appearance, but available black and white photos of both rooms show a classical frieze of warriors at the top, a map area in the middle band showing the locations of Battles in the Civil War, and a trompe l'oeuil architectural dado below. One room depicts the battles of the northern states, while the other depicts the southern campaigns. The tomb was renovated again in 1970-71 by the National Park Service. The silk and painted silk flags which had been on display for nearly 75 years were badly deteriorated, and finally removed from the tomb along with the flag cases. Perhaps in an effort to make Grant more man than myth, the park modernized the reliquary rooms by overpainting the West room red and the East room blue, and bolting blown up photo panels to the walls to interpret Grant's life. Over time, Grant's Tomb became a target of vandalism and graffiti. Various campaigns of graffiti removal were undertaken, some with disastrous results to the integrity of the stone. Brigid Sullivan Collections Conservation Branch Northeast Cultural Resources Center, National Park Service 400 Foot of John Street Lowell, MA 01852-1195 1 The tomb took on a neglected, almost derelict appearance. It was this appearance combined with increasing structural deterioration both inside and out, that prompted a law suit against the National Park Service brought by the descendants of General Grant, who threatened to have the remains removed to the family cemetery in Galena, Illinois. In the wake of negative publicity surrounding the deterioration of Grant's Tomb, The Park Service received a special congressional appropriation of several million dollars for the total restoration and rehabilitation of Grant's Tomb in 1993. As early as 1979, tests for feasibility of removing the overpaint and recovering the murals were undertaken by conservators at the request of the National Park Service. Initial 1979 tests were executed by conservator Bernard Rabin, and in 1993, Rustin Levenson Art Conservation and Associates was contracted to undertake further cleaning tests to determine if the mural painting beneath could be recovered, and to gather information as to its condition (Fig. 2). In the test areas, the 1938 painting appeared to be sound, although somewhat dirty and abraded. (Fig. 3). Based on these findings, the Mural Paintings Recovery Project was approved, and the exhibit panels removed from the wall for work to begin in the winter of 1994. The panels had been attached to the wall with molly bolts in plastic sheathing, leaving considerable damage to the wall surface. In some cases, there were blisters on the wall surface due to both the insertion and removal of the screw bolts that crumbled the plaster beneath. Also visible were out-of-plane patches over bolt holes where a brass railing had once been attached. The plastic molly sheaths were unable to be removed safely without additional damage, and were therefore pushed back into the wall with a punch and hammer. As much as possible, blistered areas were pushed back into plane using a mallet over thick paper to protect the surface. In preparation for the project, cross-section and polarized light microscopy of submitted paint samples was conducted by Susan Buck at SPNEA to identify paint layer sequence, pigments and binders. Paint samples were cast in polyester resin cubes and ground for cross-section microscopy at 125X and 250X. Binding media were identified through florescent staining techniques specific for carbohydrates, proteins, saturated and unsaturated oils and lipids. From canvas substrates to the topcoat, six layers were evident. The final layer in the first generation proved to be a thin coat of natural resin varnish, which we felt might assist us in removing the second generation layers of two primer coats and pigmented topcoats. All layers proved to be oil emulsion paints, and pigments identified with polarized light microscopy were iron pigments, titanium white, whiting and carbon black. In both rooms, only the red topcoat contained red and white lead. We were ready to begin, and assembled a team of both in-house and contract objects, paintings and architectural conservators and NYU Program interns to complete the project. A network of traction cracks was present in several areas of the wall, most notably, in the bottom gray band and lower portion of the wall which may have been due to applying the topcoat before the thick primer had completely dried. We found in early tests that acetone and ethanol swelled the topcoat so that it could be removed by scraping with a plastic edged tool, but it proved to be difficult to control the action of the solvent on the surface of the Fausett painting during this process. The solvent penetrated quickly through the cracks and scarred the surface of the 1938 painting beneath in a distracting crackelure pattern. We needed a solvent system that would swell the topcoat but would not cut through to the original painting. In addition, because the paint contained lead, we needed a removal system that would not 2 produce hazardous airborne particulates that would require full lead abatement safety procedures. Senior Paintings Conservator Harriet Irgang of Rustin Levenson Art Conservation Associates, our consultant throughout the 2-year project, tested solvent gels of various polarity to increase contact time of the solvent on the surface while minimizing saturation through to the original paint layer. Based on these tests, she recommended an ethanol gel based on a Wolbers formulation containing ethanol, xylene, distilled water, Ethomeen C25 as a cationic surfactant, and Carbopol 941 as the polymer thickening agent to remove the exceptionally dense lead-bearing red topcoat in the West Reliquary Room. Each room had a band of gray paint below the cornice molding and above the marble baseboard.