1. Introduction; 2. Rationality, welfare and the organic analogy; 3. Co-operation, the surplus and the theory of underconsumption; 4. An evolutionary framework for international relations; 5. The domestic determinants of an imperialistic foreign policy; 6. The international relations of imperialism; 7. Economic internationalism, free trade and international government; 8. International government and the maintenance of peace; 9. J. A. Hobson and liberal internationalism.