A Kantian critique of Kant's theory of punishment

In contrast to the traditional view of Kant as a pure retributivist, the re cent interpretations of Kant's theory of punishment (for instance Byrd's) p ropose a mixed theory of retributivism and general prevention. Although bot h elements are literally right, I try to show the shortcomings of each. I t hen argue that Kant's theory of punishment is not consistent with his own c oncept of law. Thus I propose another justification for punishment: special deterrence and rehabilitation. Kant's critique of utilitarianism does not affect this alternative, which moreover has textual support in Kant and is fully consistent with his concept of law.