Preventive conservation and non destructive techniues of analysis applied to a range of materials - from Rembrandt to Roman coins; from aero engines to alkyd resins; from hats to hallmarks; manuscripts to mercury.

Papers presented at the first conference devoted to preparatory layers used by artists organised by the working group 'Paintings, Scientific Study, Conservation and Restration' within the Conservation Committee of the International Council of Museums.

A classic medium, watercolor is practiced by many but mastered by few. This accessible and clear workbook is both a practical guide and an informative history. Beginning with a "1-day course," the chapters cover technique, equipment, general theory, painting plein air, and conservation. The authors also examine the work of watercolor masters, among them Claude Lorrain, Jean-Baptiste-Camille Corot, John Constable, J. M. W. Turner, and John Ruskin. Each chapter includes photographs and helpful examples of works in progress, explanations of methods, and how-to demonstra-tions. Designed for those...