THE WORK OF STREAMS 189 



waste of ancient lands, brought to shallow seas which occupied 

 the areas where the rocks occur. Ancient peneplains and 

 other phenomena show that at various times in different places 

 the streams of past ages have nearly completed their task, 

 only to have it renewed when their basins were rejuvenated by 

 a sinking of the sea or by an uplift of the land. 



It is evident from the preceding pages that the activities 

 of streams are of prime importance in shaping the present 

 chapter in the history of the earth. It will be seen in sub- 

 sequent pages that the results of stream activity, with which 

 the student is now familiar, are likewise of prime importance 

 in deciphering the earlier chapters of the earth's history. 



REFERENCES 



BONNET : Rain and Rivers as Sculptors and Rivers as Transporters, 



in The Story of our Planet, pp. 103-142. (London, 1893.) 

 DARTON : Examples of Stream-robbing in the Catskill Mountains, in 



Bull. Geol. Soe. of Am., Vol. VII, pp. 505-507. 

 DAVIS : The Seine, the Meuse, and the Moselle, in Nat. Geog. Mag., 



Vol. VII, pp. 189-202, 228-238. 

 The Rivers and Valleys of Pennsylvania, in Nat. Geog. Mag., 



Vol. I, pp. 183-253. 

 Stream Contest along the Blue Ridge, in Bull. Geog. Soc. of 



Phil., Vol. Ill, pp. 213-244. 



Geographic Cycle in an Arid Climate, in Jour, of Geol., Vol. 

 XIII, pp. 381-407. 



- The Development of River Meanders, in Geol. Mag., N. S., 

 Decade IV, Vol. X, pp. 145-148. 



River Terraces in New England, in Bull. Harvard Mus. of Comp. 

 Zool., Vol. XXXVIII, pp. 281-346. 



- The Physical Geography of Southern New England, in Physiog- 

 raphy of the United States, pp. 269-304. (New York, 1895.) 



DAVIS and WOOD : The Geographic Development of Northern New 



Jersey, in Proc. Bost. Soe. Nat. Hist., Vol. XXIV, pp. 365^23. 

 DODGE : The Geographical Development of Alluvial River Terraces, 



in Proc. Bost. Soc. Nat. Hist., Vol. XXVI, pp. 257-273. 

 DUTTON : Tertiary History of the Grand Canon District; Mono. 



II, U.S. Geol. Surv. 

 GANNETT: Profiles of Rivers in the United States; Water Supply 



and Irrigation Paper No. 44, U.S. Geol. Surv. 



