146 cleaves. HIGHWAY ENGINEERING PROBLEMS [Ch. 7 



capacity of base-subgrade combinations: Proc. Highway Research Board, pp. 

 521-543. 



* Jenny, Hans (1941). Factors in soil formation, a system of quantitative -pedol- 



ogy: McGraw-Hill Book Co., New York, 281 pages. 

 Johnson, D. W., and Pratt, W. E. (1926). Local subsidence of the Goose Creek 



Oil Field: Jour. Geol, vol. 34, Pt. I, pp. 577-590. 

 Ladd, G. E. (1927). Landslides and their relation to highways: Public Roads, 



U. S. Dept. Agr., Pt. 1, vol. 8, No. 2, pp. 21-31. 



(1928). Ibid., Pt. 2, vol. 9, No. 8, pp. 153-163. 



(1935). Landslides, subsidences and rock-falls as problems for the rail- 

 road engineer: Proc. Amer. Ry. Eng. Assoc, vol. 36, pp. 1091-1162. 



Middlebrooks, T. A., and Bertram, G. E. (1942). Soil tests for design of run- 

 way pavements: Proc. Highway Research Board, pp. 144-184. 



* Muller, Simon (1947). Permafrost or permanently frozen ground and related 

 engineering problems: Edwards Bros., Ann Arbor, Mich., 231 pages. 



* Rice, G. S. (1940). Ground movement and subsidence studies in mining coal 

 areas and non-metallic minerals (a review of the work of 15 years and sugges- 

 tions for future studies) : Trans. Amer. Inst. Min. Met. Engrs, Coal Div., vol. 

 139, pp. 140-154. 



Schultz, J. R., Cleaves, A. B., and Rutledge, P. C. (in press). Geology in engi- 

 neering practice, Chap. XXI, John Wiley & Sons, New York. 



* Sharpe, C. F. S. (1938). Landslides and related phenomena: Columbia Univer- 

 sity Press, New York, 136 pages. 



* Terzaghi, Karl (1929). The mechanics of shear failures on clay slopes and the 



creep of retaining walls: Public Roads, U. S. Dept. Agr., vol. 10, No. 10, p. 192. 



* , and Peck, R. B. (1948). Soil mechanics in engineering practice: John 



Wiley & Sons, New York, 566 pages. 



*U. S. Bureau of Reclamation (1942). Concrete Manual. 



*U. S. War Department, Office of Chief of Engineers (1943). Engineering Man- 

 ual. 



* Young, L. E., and Stolk, H. H. (1916). Subsidence resulting from mining: 



Univ. of III. Eng. Exp. Sta., Bull. 91 (exhaustive world bibliography on sub- 

 ject). 



