Description The Special Technical Publication is the result of an international symposium, which was held 16 and 17 March 1987 at Philadelphia, PA. This symposium was organized and sponsored by the ASTM Committee E37 on Thermal Measurements. The symposium as well as the special technical publication cover a broad spectrum of applications of thermogravimetry to the compositional analysis of materials. We are very pleased with the wide range of material types (polymers, rubber, cements, coal, oil shales, clays, and so forth) as well as the fact that authors from seven different countries participated in this symposium and subsequent publication.