Spacetime and Geometry: The Alfred Schild LecturesThese reports, at the forefront of relativity theory when they were written, in particular the geometrical aspects of spacetime theory, were the result of the Alfred Schild Memorial Lecture Series presented at the University of Texas at Austin beginning in 1977. Each article is a self contained summary of an important area of contemporary gravitational physics, while the book as a whole provides an overview of a wide variety of the problems of general