THE FEATURES IN DESERT LANDSCAPES 221 



elements (Fig. 237). Almost the only exception of importance is 

 furnished by the domes of massive granite monoliths, which are 

 sometimes broken in half by great displacements. Below the 

 horizon the secondary lines in the landscape betray the same 

 straightness of the component elements by the gabled slopes 

 of talus which are many times repeated so as almost to repro- 

 duce the lines in a house of cards, since the sloping lines are 

 maintained at the angle of repose of the materials (Fig. 482, p. 443). 

 Wherever the waves of desert lakes have made an attack upon the 

 rocks and have retired the projecting spurs, other gables charac- 

 terized by slightly different slopes are introduced into the landscape. 



READING REFERENCES FOB CHAPTERS XV AND XVI 



General : 



JOHANNES WALTHER. Das Gesetz der Wiistenbildung in Gegenwart und 

 Vorzeit. Berlin, 1900, pp. 175, many plates. (This extremely valua- 

 ble work is now out of print, but both a revised edition and an Eng- 

 lish translation are promised for 1912.) 



SIEGFRIED PASSARGE. Die Kalihari. Berlin, 1904, pp. 662. 



W. M. DAVIS. The Geographic Cycle in an Arid Climate, Jour. Geol., 

 vol. 13, 1905, pp. 381-407. 



ELLSWORTH HUNTINGTON. The Pulse of Asia. New York and Boston, 

 1907, pp. 415. 



SVEN HEDIN. Scientific Results of a Journey through Central Asia, 1899- 

 1900. Stockholm, 1904-1905, vols. 1 and 2, pp. 523 and 717, pis. 

 56 and 76. 



JOSEPH BARRELL. Relative Geological Importance of Continental, Lit- 

 toral and Marine Sedimentation, Jour. Geol., vol. 14, 1906, pp. 316- 

 356, 429-457, 524-568. 



E. F. GAUTIER. Etudes sahariennes, Ann. de Geogr., vol. 16, 1907, pp. 

 46-69, 117-138. 



The self -registering gauge of past climates : 



G. K. GILBERT. Lake Bonneville, Mon. I, U. S. Geol. Surv., Chapter vi, 

 pp. 214-318. 



T. F. JAMIESON. The Inland Seas and Salt Lakes of the Glacial Period, 

 Geol. Mag. decade III, vol. 2, 1885, pp. 193-200. 



J. E. TALMAGE. The Great Salt Lake, Present and Past. Salt Lake City, 

 1900, pp. 116, plates. 



E. HUNTINGTON. Some Characteristics of the Glacial Period in Non- 

 glaciated Regions, Bull. Geol. Soc. Am., vol. 18, 1907, pp. 351-388, 

 pis. 31-39. 



T. C. CHAMBERLIN. The Future Habitability of the Earth, Rept. 

 Smithson. Inst., 1910, pp. 371-389. 



