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EN
The grotesques by J. B. Plersch in Jordanowice were conserved thrice during the post-war period — in 195 0 - 1951, 1952-1953 and 1999-2001. The material applied upon the first two occasions and the fatal technical state of the manor house extensively damaged the paintings. The discussed article presents the “deconservation” and “reconservation” of a fragment of the J. B. Plersch decorations — the topic of a diploma study written in the Department of the Conservation and Restoration of Works of Art at the Academy of Fine Arts in Warsaw. The conservation dating from the 1950s was severely criticised, although it should be taken into consideration that it was conducted for the p u rpose of salvaging the paintings by resorting to material available at that time — shellac, oil, egg white, wax, plaster, etc. During the latest conservation, it was necessary to tackle difficult technical problems associated with the considerable salination and unsatisfactory condition of the plaster as well as the necessity of removing earlier applied material, which rendered the painted layer indelible. Disintegrated fragments of the plaster were hardened by means of silicone resin Funcosil Steinfestiger 300. The additional strata of wax, oil and shellac were removed with assorted solutions of solvents. The following stages of conservation included emulation retouching of the missing elements of the painted layer and small reconstruction. Such an aesthetic solution is justified by the fact that the polychrome constitutes the most important element of the decoration of the vestibule. Missing elements of the grotesques could be reconstructed u p o n the basis of better preserved parts of the decoration on other walls and the doors. A comparison with grotesques by J. B. Plersch in the White House and the Palace on Water in the Warsaw Łazienki proved to be of great assistance.
EN
In 1782 Jan Bogumił Plersch used the tempera technique to execute painted decorations of the walls, ceiling, wardrobes and two doors in the octagonal study in the Mokronowski manor house in Jordanowice. The decoration involves arabesque-grotesque ornaments and candelabra arabesques composed of masks and medallions with allegorical figures depicted against a light-hued backdrop. The general purpose of the conservation was to halt the destruction and degradation of the historical polychrome by gluing loose fragments and reinforcing strata of the floating coat, to gether with the construction foundation (by using organic silicone compounds), and halting the unhampered migration of salt within stratigraphie layers. It was necessary to employ desalination compresses. Subsequently, the polychrome surface was cleaned and secondary stratification — repainting, darkened retouching, putty and patches — were removed. The execution of the supplementation was adapted to the degree of the destruction of adjoining strata, with due care not to introduce measures that could prove to be excessively strong, cohesive and binding. It became indispensable to use wide-porous plaster. Aesthetic conservation encompassed both the ornaments and the background of the decoration as well as the reconstruction of n o n -ex tan t fragments of the polychrome. Due to the extensive devastation of the original painted layer it was necessary to conduct numerous consultations and detailed co-ordination concerning the character and range of the reconstruction. The reconstruction of the painted stratum was carried out upon the basis of an analogy with preserved fragments in the study, archival material and comparisons with other realisations by J. B. Plersch. Conceptions of aesthetic solutions were presented on boards. Owing to the decorative nature of the polychrome, it was decided to resort to emulation retouching in a minimally lighter tone.
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