In the main body of this chapter we made two assertions that were true but not carefully derived. First was the assertion, embodied in Figure 4-2, that the ratio of land to labor employed in each industry depended on the wage-rental ratio wlr Second was the assertion, embodied in Figure 4-3, that there is a one-to-one relationship between relative goods prices pp/pf and the wage-rental ratio. This appendix briefly demonstrates both propositions.