ConNext-2021

25 Top: VIS. A sticky, PEG-consolidated wooden skimmer displaying excessive darkening. Bottom: Left: VIS. Photograph of a consolidated wooden knob that is excessively dark and is leaching a viscous, sticky fluid. Middle: UV. The same object under ultraviolet light. Notice the whitish green fluorescence and the presence of highly fluorescent drops that cover the surface of the object. Right: UV. Photograph of the shelf after removing the object. A semi-circle of residue marks the spot of the removed object. All images: © Maxx Folmer, shared with the permission of Stichting Erfgoedpark Batavialand.