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FR
Les analyses technologiques des peintures murales au choeiur de la cathédrale d’Oliwa ont été faites à l’aide des réaction miicrochimiques suivantes: a) analyses à sec (coloration de la flamme et de la perle de borax) b) microcristaloscopie c) réactions à gouttes d) Chromatographie e) analyses des coupes des couches picturales et des mortiers. Les colles ont été analysées à l’aide de la chromotographie. D’après ces analyses nous avons établis les variantes suivantes: I 1) la couche de couleurs en détrempe 2) le chaulage 3) le crépi II 1) la couche de couleurs en huile 2) la préparation en détrempe en couleurs 3) le chaulage 4) le crépi III 1) la couche de couleurs en huile 2) la préparation en blanc contenant uniquement le blanc de céruse — 2РЬСОз · Pb(OH)2 3) le chaulage 4) le crépi IV 1) les glacis en huile ou résine (p. ex. CU(CH3COO)2 · 2CU(OH)2) 2) la préparation en détrempe en couleurs 3) le chaulage 4) le crépi.
EN
The Virgin and Child with a Goldfinch" (107,2x77,2 cm) is a tempera painting on a wooden panel, and constitutes part of the private collection of the Popiel family. Serious damage to the painting and its exceptional historical value decided about its conservation (as part of a diploma work, 1985-1986) which consisted of deciphering the technology and technique, the disclosure of the original layers and the restitution of the aesthetic merits of a selected fragment. Through observation and laboratory and comparative research it was made possible to establish the structure of the object and the subsequently introduced changes and deformations. The conservation work included the removal of secondary layers, the stabilization and consolidation of the wooden base (panel), the replenishment of losses and a graphic attempt at reconstrucing the original appearance and shape of the painting. As a result of the executed work, I disclosed and completely protected the original layers of the object, enabling to determine the origin and authorship of the heretofore unknow painting, and made it possible to confront it with Cennini's textbook. The author of „The Virgin and Child with a Goldfinch" is with all certainty Francesco d'Antonio Zacchi, know as Balletta, a painter from Viterbo, and it was executed during the early stage of his career, in about 1430-1440. (translated by A. Rodzińska-Chojnowska)
EN
Murals are co a ted by a ssorted fo r eign substances ow in g to in ten tion a l human activity or natural p ro cesses o f the se ttlem en t o f impurities and the crystallisation o f salt. Such substances render the r e c ep tion o f the w o rk o f art illegible or even im p o ssib le , and thus are rem o v ed in the course o f c on se rv a tion . Foreign substances are d ivided into: b u ild -u p , w h ich en c om p a ss e s p a in tin g , plastering, the use o f w all paint and artistic o v e rp a in tin g , and co a tin g w ith varnish and fix in g agents; a ccre tion o n the p a in ted surface in the form o f dust; o rganic im pu rities, i. e. p lan t o rganisms and substances a sso c iated w ith the p resen c e o f animals; and salt e fflo r e sc en c e , i. e. substances crystallised on mural surfaces.
EN
In May 1966 the conservation workshop of the Museum of Folk Architecture in Sanok under the guidance of Wojciech Kurpik started to examine the recently discovered Ruthenian paintings in the Venerable Onuphrius Orthodox Church in Posada Rybotycka. Uncovering and conservation works were continued in the summer of 1966 and in the autumn of 1967. Large parts of paintings were uncovered, the composition scheme was identified, the technique was determined as a mixed fresco 6c tempera technique, and even the paintings time of creation (16th century) was identified. Traces of two major renovations were also discovered. Significant stylistic differences between paintings in the presbytery and in the aisle were noticed. It was determined that, apart from mechanical reasons, the main causes of destruction of the paintings were the humidification of walls caused by the destruction of the roof and the use of organic binder, which had been decomposed by microorganisms and the powdered paint had dropped off the primer. The discovery and identification of inscriptions scratched in plaster on the vestibule walls was a matter of key importance. These are mainly names and year dates, e.g. the oldest dates: 1501 and 1506, which suggest that the time of erection of the Orthodox church should be shifted at least to the 15th century. At the same time, archaeological research was carried out around the church and in the church hill, and anthropological research was carried out at the church cemetery. Wojciech Kurpik finished his work in October 1967 and further research was to lie continued by the Historic Object Conservation Workshop in Krakow under the direction of Władysław Zalewski; however, documents contain no records that would prove the undertaking of any further polychrome- -related works. In 1977 the Orthodox church was taken over by the District Museum in Przemyśl. In the years 1983-1985 conservation works were carried out by Plastyka, a Warsaw-based company, under the direction of Małgorzata Wesołowska-Nowosielska. At that time, polychrome was uncovered, partly cleaned and secured in the entire church; the missing plaster was supplemented with lime mortar in the presbytery, and lime 6c sand trims were installed in the aisle. In 1884 Dr Janusz Lehmann carried out stratigraphie and laboratory research. The structure, mineral and chemical constitution of the plaster layer, which paint layers were placed on, is similar to those used in Europe in Renaissance times, but the technique is consistent with the late Byzantine tradition and paintings of south-eastern Orthodox Europe. In 1986 Małgorzata Wesołowska-Nowosielska included results of conservation works in her doctoral dissertation presented at the Academy of bine Arts in Warsaw. The paintings did not constitute the primary decoration of the church interior. The walls were originally covered with a double layer of zinc white, which was only later covered with polychrome. The same original plaster covers all church walls, the vault and both sides of the templon, which indicates that it had been present since the very beginning. The mineral composition ol the plaster is not consistent with the tradition of Byzantine- -Ruthenian painting. This means that craftsmen laying the brown coat represented local techniques rather than eastern or southern techniques. Conservation works were continued in the years 1986-1988 under the direction of Barbara Kaniewska. At that time, frescos in the presbytery were cleaned thoroughly, cement 6c lime patches were removed, and the missing plaster was supplemented. Finally, retouching works were performed for consolidation purposes. Conservation works were closed in 1991, when Józef Steciriski completed the protection of painting residues over the church vestibule. Additionally, the passage leading from the inside of the main church aisle was reconstructed and stone stairs leading to it from the outside were demolished. Uncovering and conservation works that were finished towards the end of the 1980s were not continued later. Scaffolds in the aisle are the only things left of them.
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