National Gallery Technical Bulletin

This "National Gallery Technical Bulletin, "like all previous volumes in this critically acclaimed series, draws on the combined expertise of curators, conservators, and scientists to bring together a wealth of information about artists' materials, working practices, and techniques. The "Bulletin" provides a unique record of research carried out at the National Gallery, London. Contents of Volume 25: Raphael's Early Work in the National Gallery: Paintings before Rome; Polidoro da Caravaggio's "Way to Calvary: "Technique, Style, and Function; Nicolas Lancret's "Four Times of Day; "The Effect of Relative Humidity on Artists' Pigments, and Fading and Colour Change of Prussian Blue: Methods of Manufacture and the Influence of Extenders.