Editorial; J. Earman, C. Glymour, S. Mitchell. Ceteris Paribus Lost; J. Earman, J. Roberts, S. Smith. There is No Such Thing as a Ceteris Paribus Law; J. Woodward. Ceteris Paribus An Inadequate Representation for Biological Contingency; S.D. Mitchell. Ceteris Paribus Laws: Classification and Deconstruction; G. Schurz. Laws, Ceteris Paribus Conditions, and the Dynamics of Belief; W. Spohn. A Semantics and Methodology for Ceteris Paribus Hypothesis; C. Glymour. Who's Afraid of Ceteris Paribus Laws? Or: How I Learned to Stop Worrying and Love Them; M. Lange. In Favor of Laws that are Not Ceteris Paribus After All; N. Cartwright. Cartwright on Explanation and Idealization; M. Elgin, E. Sober.