National Gallery Technical Bulletin Volume 33 Ashok Roy, Rachel Billinge, Dillian Gordon, Helen Howard, Rachel Morrison, Britta New, David Peggie, Christopher Riopelle, Anne Robbins, Ashok Roy

The acclaimed "National Gallery Technical Bulletin" features contributions by curators, scientists, and conservators, on materials and techniques of painting, and the scientific examination of paintings. Volume 33 presents new findings on the use of colourless powdered glass in 15th- and 16th-century European paintings; the conservation and restoration of Niccolo di Pietro Gerini's Baptism Altarpiece; an in-depth examination of Renoir's Umbrellas; the techniques of Adolphe Monticelli; and a comprehensive study of Vuillard's La Terrasse a Vasouy.

Ashok Roy is director of science; Helen Howard, Rachel Morrison, David Peggie, Marika Spring and Kate Stonor are members of the scientific department; Rachel Billinge, Britta New, and Hayley Tomlinson are members of the conservation department; Dillian Gordon was until 2010 curator of Italian paintings before 1460; Christopher Riopelle is curator of post-1800 paintings; Anne Robbins is assistant curator of post-1800 paintings; all at the National Gallery, London.