Such is the contingency here of the particular with respect to the universal, and therefore of division in general, that it may be attributed to an instinct of reason when we discover in this cognition bases of division and divisions which, to the extent that sensuous properties allow it, show themselves to be more adequate to the concept For example, in the case of animals, the instruments for eating, the teeth and the claws, are used in the systems as a far reaching criterion of division.