David Hull Through Two Decades -- Rethinking the Propensity Interpretation: A Peek Inside Pandora�́�s Box -- Species as Entities of Biological Theory -- Individuality, History and Laws of Nature in Biology -- Interaction and Evolution -- Picturing Weismannism: A Case Study of Conceptual Evolution -- Replicators and Interactors in Cultural Evolution -- Darwin�́�s Theory and Darwin�́�s Argument -- Some Puzzles About Species -- The Rational Weight of the Scientific Past: Forging Fundamental Change in a Conservative Discipline -- Individuals, Species and the Development of Mineralogy and Geology -- Attaching Names to Objects -- From Reductionism to Instrumentalism? -- Systematics and Circularity -- David Hull�́�s Conception of the Structure of Evolutionary Theory -- Kinds, Individuals and Theories -- Evolvers are Individuals: Extension of the Species as Individuals Claim -- A Function for Actual Examples in Philosophy of Science -- Publications of David L. Hull -- Au