10. The balance of international payments. [F. W. Taussig, Principles of Economics, vol. 1, chap. 33.]
11. The trade balance of the U. S. before the war. [G. Paish, reference in note to sect. 779.]
12. Probable tendencies in the trade balance of the U. S. [J. R. Smith, The American trade balance, National Foreign Trade Council, N. Y., 1919.]
13. Function of imports in our foreign trade. [G. E. Roberts, National City Bank, Foreign Commerce Series, no. 2, N. Y., 1920.]
14. American loans to Europe. [Noyes in Scribners’ Magazine, 61: 131 ff.; Atwood in American World’s Work, 33: 243-250, 399-403.]
15. Application of American methods to the construction of ships. [Hurley, chap. 5, 8.]
16. Concrete ships. [Mattox, chap. 13.]
17. Development of shipyards. [Hurley, chap. 6; Mattox, chap. 15.]
18. The shipping problem at the close of the war. [E. R. Johnson in Friedman, chap. 13.]
19. Foreign investments. [F. H. Sisson in Friedman, chap. 19.]