272 black. PERMAFROST [Ch. 14 



polygonal surface markings in Spitzbergen: Amer. Jour. Sci., vol. 240, pp. 81-92. 

 Giddings, J. L. (1938). Buried wood from Fairbanks, Alaska: Tree-Ring Bull, 



pp. 3-6. 

 Hardy, R. M., and D'Appolonia, E. (1946). Permanently frozen ground and 



foundation design, Parts 1 and 2: Eng. Jour. Canada, vol. 29, No. 1, pp. 1-11. 



(Reviewed: Jour. Glaciology, vol. 1, No. 2, pp. 80-81, July 1947, by W. H. 



Ward.) 



* Highway Research Board (1948). Bibliography on frost action in soils, an- 

 notated: Nat. Research Council, Highway Research Board, Bibliography 3, 57 

 pages. 



*H6gbom, B. (1914). tjber die geologische Bedeutung des Frostes: Geol. Inst. 



Uppsala Bull, vol. 12, pp. 257-389. 

 Hopkins, David M. (1949). Thaw lakes and thaw sinks in the Imuruk Lake 



area, Seward Peninsula, Alaska: Jour. Geol, vol. 57, No. 2, pp. 119-131. 

 Horberg, Leland (1949). A possible fossil ice wedge in Bureau County, Illinois: 



Jour. Geol, vol. 57, No. 2, pp. 132-136. 

 Huttl, John B. (1948). Building an earth-fill dam in Arctic placer territory: Eng. 



and Min. Jour., vol. 149, No. 7, pp. 90-92. 

 Ingersoll, L. R., Zobell, O. J., and Ingersoll, A. C. (1948). Heat conduction, with 



engineering and geological applications: McGraw-Hill Book Co., New York, 



278 pages. 

 *Jaillite, W. Marks (1947). Permafrost research area: Military Engr., vol. 39, 



No. 263, pp. 375-379. 

 Joestings, H. R. (1941). Magnetometer and direct-current resistivity studies in 



Alaska: Amer. Inst. Mech. Engrs., Tech. Pub. 1284, 20 pages. 

 Judson, Sheldon (1949). Rock-fragment slopes caused by past frost action in 



the Jura Mountains (Ain) France: Jour. Geol, vol. 57, No. 2, pp. 137-142. 

 Kaliaev, A. V. (1947). Anabiosis under conditions of frozen ground: Mikrokio- 



logiya, vol. 16, No. 2. 

 Lane, Alfred C. (1946). Northern climatic variations affecting geothermal ini- 

 tial: Canadian Inst. Mining and Metallurgy, Bull. 411, pp. 397-402. 



* Leffingwell, E. de K. (1919). The Canning River region, northern Alaska: 



U. S. Geol. Survey, Prof. Paper 109, 251 pages. 

 Liverovsky, A. V., and Morozov, K. D. (1941). Construction under permafrost 



conditions: Leningrad-Moscow, 244 pages, 151 figs. (Abstracted by E. A. 



Golomshtok, Stefansson Library.) 

 Mosley, A- (1937). Frozen ground in the sub-arctic region and its biological 



significance: Scottish Geog. Mag., vol. 53, No. 4, pp. 266-270. 



* Muller, Siemon W. (1945). Permafrost or permanently frozen ground and 

 related engineering problems: U. S. Geol. Survey Special Report, Strategic 

 Engineering Study 62, 2nd ed., Military Intelligence Division, Office, Chief of 

 Engineers, U. S. Army. Also lithoprinted by Edwards Brothers, Ann Arbor, 

 Mich., 1947, 231 pages. 



Mullis, Ira B. (1930). Illustrations of frost and ice phenomena: Public Roads, 

 vol. 11, No. 4, pp. 61-68. 



* Navy Department, Bureau of Yards and Docks (1948-49). Cold-weather engi- 

 neering: Chaps. I-V, 109 pp. 



Nikiforoff, C. (1932). The perpetually frozen subsoil of Siberia: Soil Science, 



vol. 26, pp. 61-78. 

 Nordale, A. M. (1947). Valuation of dredging ground in the sub-arctic: Trans. 



