In this chapter the elements of macro-economics discussed in the previous chapter are brought together. We begin with investigations of the short-run steady-state properties of some models which incorporate some or all of those elements. But since the Kaleckian approach leads to macro-economic models which are inherently cyclical it is necessary to discuss the cyclical properties of such models as well as their steady-state properties. Finally, we offer some brief remarks on the implications of the Kaleckian approach for the role of the State in macro-economics.