through the painting and glazes. For instance, they appear particularly on the temples and cheek of the sitter. The lines are visible on the IR photos, carefully designing the hair around the face, as well as the position of the hands. The infrared photos also reveal interesting pentimenti on the left arm. Untouched, and beautifully preserved, they indicate that Pourbus changed his mind on the position of the sleeve while painting the portrait (see infrared photo 5). Publications (en) Anne Van Oosterwijk, et al. The forgotten masters. Pieter Pourbus and Bruges painting from 1525 to 1625. [Ghent]: Snoeck, [2017]. . Catalogue of an exhibition at the Groeningemuseum, Bruges, Oct. 13, 2017 – Jan. 21, 2018. 336 pages. With a complete description and full-page picture of the painting pp. 208,209. (en) (nl) Marc de Beyer and Josephina de Fouw, Pieter Pourbus: meester-schilder uit Gouda = Pieter Pourbus: Master painter of Gouda. Gouda: Museum Gouda, 2018. . Catalogue of the exhibition in Museum Gouda, Feb. 17 – June 17, 2108. 86 pages. Notes References Flemish paintings 16th-century portraits 1554 paintings Portraits of women