94 THE JOURNAL OF GEOLOGY. 



dunes ; the beautiful group of radial rivers, flowing down the 

 slopes of a great alluvial fan that has been formed where several 

 large rivers emerge from the Pyrenees, this being one of the best 

 examples of a simple consequent river-grouping that I have 

 found ; the plateau of the lower Seine, an old upland of denuda- 

 tion, with an excellent meandering river gorge of moderate depth 

 cut through it, together with certain interesting features of young 

 branching river valleys, and of rivers that have been shortened 

 by the encroachments of the sea in cutting away the land. To 

 these I intend shortly to add groups of sheets showing the dis- 

 sected escarpment west of Rheims and Chalons, with its beauti- 

 fully adjusted rivers, the delta of the Rhone, and the fiorded 

 coast of Brittany. 



From the Ordnance Survey of Great Britain (i : 63,360) one 

 set of sheets includes the central Highlands of Scotland, with 

 the Great Glen and Glen Roy ; two other sets include the fiords 

 and islands of the southwestern and the northwestern coasts. 

 These three sets agree in showing an old peneplain of denudation, 

 then elevated and maturely dissected, and now somewhat depres- 

 sed, with cliffs nipped on its land heads and deltas laid in its bay 

 heads. Their formula, according to the plan already suggested, 

 would be 75, 4- 25, — 2. A glacial accident of late date is 

 recorded by the upland tarns and the valley lakes. A group of 

 sheets for southwestern Ireland exhibits bold mountain ranges 

 running directly into the sea, forming a strongly serrated coast. 

 The English sheets are of older date and are not of particularly 

 good expression, and for this reason I have not yet ordered any 

 of them ; although the ragged escarpment of the chalk and of 

 the oolite trending northeast on either side of Oxford should be 

 represented ; and the Weald offers excellent illustration of well 

 adjusted consequent and subsequent rivers on an unroofed dome 

 of Cretaceous strata. 



The map of the German Empire (i : 100,000) supplies many 

 examples of striking features. The plateau of the Middle Rhine 

 has already been mentioned as a subject for lantern slides ; it is 

 represented in two map-groups, one of which shows the tranverse 



