Introduction / Bruno Gnassounou and Max Kistler -- Part I: The metaphysics of dispositions and causal powers -- Dispositions and counterfactuals : from Carnap to Goodman's children and grandchildren / Francois Schmitz -- Filled in space / Stephen Mumford -- Dispositions and essences / Claudine Tiercelin -- The causal efficacy of macroscopic dispositional properties / Max Kistler -- Opium's virtue dormitive / Cyrille Michon -- Conditional possibility / Bruno Gnassounou -- On ascribing dispositions / Ludger Jansen -- Part II: Dispositions and causal powers in science -- An extended semantic field of dispositions and the grounding role of causal powers / Rom Harre -- What makes a capacity a disposition? / Nancy Cartwright -- Causation, laws and dispositions / Andreas Huttemann -- Can capacities rescue us from Ceteris Paribus laws? / Markus Schrenk -- Dispositions, relational properties and the quantum world / Mauro Dorato -- Are specific heats dispositions? / Anouk Barberousse.