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EN
In the years 1982—83 a stone crucifix by Wit Stwosz in the Church of Our Lady in Cracow was subjected to conservati n. During the work it appeared that the crucifix had been repainted several times. Thus, detailed technological studies were undertaken. The stone was subjected to a petrographie analysis, spectral emission analysis of pigments, qualitative analysis of pigments and analysis of bondings by means of absorptive infra-red spectrophotometry. Additional studies on metal and wooden elements were also carried out. The studies were made in the Department of Technology, Conservation Techniques and Works of Art at the Faculty of the Conservation of Works of Art in Cracow's Academy of Fine Arts. Observations carried out during conservation works as well as detailed analytical results made it possible to draw concrete conclusions. The crucifix was made from organogenic material, i.e. Pińczow limestone; it is a monolith comprising the figure and the cross. The removal of oil layers of repaintings revealed the existence of the original polychromy, a number of missing parts (lack of fingers, part of perizonium, a curl of hair, nails, tone crown of thorns, and some parts of the cross). The first polychromy was put on the missing parts after 1504 and thus it could not be done by Stwosz. Originally, the sculpture was not covered with polychromy. The condition of the stone shows that from the very beginning the crucifix was inside the church. The study revealed a distemper bonding agent (casein) in the first painting layer and oil adhesives in 6 repainting layers which were put after 1830. On the basis of the open work it has been assumed that the wall which provided the background for the crucifix was polychromed. At present it is screened with silver repousse metal sheet. No signature has been found on the front part of the object. Hitherto studies on the crucifix do not contain technological and conservation information. The studies allowed to examine this work of art in detail, expanding available information on it as well as on medieval polychromies on stone sculptures, which have been examined only roughly.
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