Crystallography may be described as the science of the structure of materi als, using this word in its widest sense, and its ramifications are apparent over a broad front of current scientific endeavor. It is not surprising, therefore, to find that most universities offer some aspects of crystallography in their undergraduate courses in the physical sciences. It is the principal aim of this book to present an introduction to structure determination by X-ray crystal lography that is appropriate mainly to both final-year undergraduate studies in crystallography, chemistry, and chemical physics, and introductory post graduate work in this area of crystallography. We believe that the book will be of interest in other disciplines, such as physics, metallurgy, biochemistry, and geology, where crystallography has an important part to play. In the space of one book, it is not possible either to cover all aspects of crystallography or to treat all the subject matter completely rigorously. In particular, certain mathematical results are assumed in order that their applications may be discussed. At the end of each chapter, a short bibliog raphy is given, which may be used to extend the scope of the treatment given here. In addition, reference is made in the text to specific sources of information. We have chosen not to discuss experimental methods extensively, as we consider that this aspect of crystallography is best learned through practical experience, but an attempt has been made to simulate the interpretive side of experimental crystallography in both examples and exercises.

Originally published in 1932, this book provides a guide to the elementary principles underlying the examination, measurement and identification of minerals. The text was designed primarily for students of petrology and chemistry. Numerous illustrative figures and a bibliography are also included. This book will be of value to anyone with an interest in crystals and the history of science.

Originally published in 1938, this textbook was primarily designed for university students to provide a solid grounding in the science of crystal physics. Previous knowledge of materials science is considered a prerequisite for the content as well as a solid understanding of physics, mathematics and crystallography. Throughout this book a two-fold purpose has been kept in view - 'to present the classical treatment of the physical properties of crystals in terms of tensor notation and also to indicate the lines of development of modern theoretical and experimental research'. Chapters are broad in scope, detailed and clearly written; chapter titles include, 'Conduction', 'Electric induction' and 'Elasticity'. Multiple diagrams are included throughout for reference. Encompassing the increasingly interdisciplinary nature of the subject and its rapid scientific developments, this textbook will be of significant value to students of physics as well to anyone with an interest in crystallography, geology and the history of education.

Most people are familiar with the fact that diamond and graphite are both composed only of carbon; yet they have very different properties which result from the very different structures of the two solids - they are polymorphs of carbon. Understanding the relationship between the structures and the properties of materials is of fundamental importance in developing and producing new materials with improved or new properties. The existence of polymorphic systems allows the direct study of the connection between structures and properties. This book provides grounding on the fundamental structural and energetic basis for polymorphism, the preparation and characterization of polymorphic substances and its importance in the specific areas of pharmaceuticals, pigments and high energy (explosive) materials. The closing chapter describes the intellectual property implications and some of the precedent patent litigations in which polymorphism has played a central role. The book contains over 2500 references to provide a ready entry into the relevant literature.