Natural Kinds

Natural Kinds and Projectible Predicates Natural Kinds and Projectible Predicates- In this article Axel Mueller applies some reflections upon Goodman's paradox to the problem of natural kinds. Category Induction and Representation Category Induction and Representation- Online text of a chapter by Stevan Harnad in "Categorical Perception: The Groundwork of Cognition". Properties Properties- Entry in the Stanford Encyclopaedia of Philosophy by Chris Swoyer. Principally concerned with existence and identity conditions.