Glue-size

Glue-size is a painting technique in which pigment is bound (sized) to cloth (usually linen) with hide glue, and typically the unvarnished cloth was then fixed to the frame using the same glue. Glue-size is also known as distemper, though the term "distemper" is applied variously to different techniques. Glue-size was used because hide glue was a popular binding medium in the 15th century, particularly among artists of the Early Netherlandish period, who used it as an inexpensive alternative to oil. Although a large number of works using this medium were produced, few survive today, mainly because of the high perishability of linen cloth and the solubility of hide glue. Well-known and relatively well-preserved – though substantially damaged – the most notable examples include Quentin Matsys' Virgin and Child with Saints Barbara and Catherine (c. 1515–25)^[1] and Dirk Bouts' Entombment (c. 1440–55).^[2] In German the technique is known as Tüchleinfarben, meaning "small cloth colours", or Tüchlein, derived from the German word for “handkerchief” (i.e., “small cloth”).