VI. The distinction between “resource” and “factor,” 346 — VII. The heterogeneity of capital goods, 350. — VIII. Diminishing returns on capital? 356. — IX. Capital goods and protectionism, 360.

Introduction, 169. — I. Leontief's U. S. capital-labor input ratios, 170. — II. Tautology in the factor proportions account, 172. — III. The meaning of “factor intensive,” 174. — IV. Transformation curves and community tastes. 179. — V. Variable proportions; factor price relationships, 188.