With its origins in the theories of continuous distributions of dislocations and of metal plasticity, inhomogeneity theory is a rich and vibrant field of research. The recognition of the important role played by configurational or material forces in phenomena such as growth and remodelling is perhaps its greatest present-day impetus. While some excellent comprehensive works approaching the subject from different angles have been published, the objective of this monograph is to present a point of view that emphasizes the differentialgeometric aspects of inhomogeneity theory. In so doing, we follow the general lines of thought that we have propounded in many publications and presentations over the last two decades. Although.