About the Author

David L. Hull (1935-2010) was Dressler Professor in the Humanities Emeritus at Northwestern University and a leading philosopher of biological science. He received the first Ph.D. awarded by the History and Philosophy of Science department at Indiana University and thentaught at the University of Wisconsin Milwaukee fortwenty years before moving to Northwestern. He was editor of the Science and Its Conceptual Foundations series from the University of Chicago Press.