Relation of deforestation to erosion:—
N. S. Shaler. Origin and Nature of Soils, 12th Ann. Rept. U. S. Geol. Surv., 1891, Pt. 1, pp. 268-287.
W. J. McGee. The Lafayette Formation, ibid., pp. 430-448.
F. H. King. Soils. Macmillan, New York, 1908, pp. 50-54.
Bailey Willis. Water Circulation and Its Control, Rept. Nat. Conserv. Com., 1909, vol. 2, pp. 687-710.
W. J. McGee. Soil erosion, Bull. 71, U. S. Bureau of Soils, 1911, pp. 60, pls. 33.
CHAPTER XII
THE LIFE HISTORIES OF RIVERS