1. Introduction.- 2. Economic Development, Endogenous Growth, and Agriculture.- 2.1 Mechanisms of Endogenous Growth.- 2.1.1 Accumulation Driven Growth.- 2.1.2 Innovation Driven Growth.- 2.2 The New Analysis of Development Problems.- 2.2.1 Growth Performance.- 2.2.2 Structural Change and the Development of Industry.- 2.2.3 Growth in the Open Economy.- 2.3 Some Older Thoughts about Agriculture in Economic Development.- 2.3.1 Dual Economy Models.- 2.3.2 Agriculture Driven Development.- 2.4 Agricultural Productivity and the New Growth Theory.- 3. The Dual Economy Revisited.- 3.1 Exogenous Technical Progress in a Dual Economy.- 3.1.1 The Model.- 3.1.2 Steady-State Uniqueness and Stability.- 3.2 Economic Policies, Preferences, and Development.- 3.2.1 Long-Run Effects.- 3.2.2 Transitional Dynamics.- 3.2.3 Economic Development as Transitional Process.- 3.3 Summary.- 4. Endogenous Growth in the Dual Economy.- 4.1 Endogenous Technical Progress in Agriculture.- 4.2 The Model.- 4.2.1 Optimal Solution.- 4.2.2 Market Outcome.- 4.3 Economic Policy, Preferences, and Development.- 4.3.1 Long-Run Effects.- 4.3.2 Transitional Dynamics.- 4.4 Summary.- 5. Technology Adoption and Catch-Up.- 5.1 Adoption of Technologies in Agriculture.- 5.2 Exogenous Technology Adoption.- 5.3 Endogenous Adoption Decisions.- 5.4 Summary.- 6. Food Consumption and Economic Development.- 6.1 Subsistence Consumption and Engel’s Law.- 6.2 Productivity Effects of Nutrition.- 6.2.1 The Models.- 6.2.2 Transitional Dynamics.- 6.3 Summary.- 7. Conclusions.- 8. References.- Mathematical Appendix.