"This Pocket Guide sets out in straightforward terms the processes by which paintings are looked after and examined; it discusses the material nature of paintings and the ways that they have changed both naturally and at the hands of previous restorers and describes the main types of conservation treatment carried out on panel and canvas paintings, and some of the problems involved in cleaning and restoration. A series of case studies of major works from the National Gallery vividly illustrates the complex and varied issues which confront the conservator."--BOOK JACKET.