1855.] SHARPE — ELEVATION OF THE ALPS. 117 



the same valley there is a large moraine above Marmels, which also 

 appears to rest on a bank of alluvial detritus ; but there is no 

 section seen, and the superposition is not certain*. 



Terraces are numerous in the valley of Pratigau ; but I have only 

 the elevations of one at Mezza Selva, 3444 feet, and another at 

 Saas, 3254 feet. 



In Davos there is a long terrace at Wiesen at 4770 feet : there 

 are others higher up the valley of which I have not the elevations. 



On the lower part of the Rhine, between Ilanz, 2323 feet, and 

 Coire, 1968 feet, there is a succession of terraces at short intervals. 



Valleys of the Inn and its Tributaries. — The upper Engadine is 

 a remarkable valley, its bottom forming a uniform alluvial plain 

 which only falls 750 feet in 30 miles, from the Lake of Sils to its 

 sudden termination above Zernetz ; the upper end of this deposit is 

 5900 feet above the sea. Terraces are numerous in the Lower 

 Engadine: at Boscia, 5464 feet, and Fettan, 5404 feet, there is a 

 terrace on the side of the hills more than 1000 feet above the river ; 

 at Tarasp, 4597 feet, is a terrace which occurs also on the opposite 

 side of the river at Upper Schuls ; another at Lower Schuls, 3970 

 feet, extends down the valley nearly to Sus ; below Sus is a terrace 

 on the sides of the hill at 4060 feet elevation. Others occur lower 

 down the valley at 3567 feet, at Strada, 3465 feet and at 3415 feet, 

 these last two being distinct. 



On the north side of the Bernina Pass there is a long terrace at 6 1 ^0 

 feet elevation, between Pontresina and Bernina, which is the highest 

 terrace which I observed in Switzerland; another occurs at Pontre- 

 sina, 5930 feet. 



On the descent from the Stilvio into the Tyrol, the highest terrace 

 is about 950 feet below Trefiu at about 4230 feet elevation ; and 

 there is another about 500 feet lower. 



Valleys on the South of the AIps.—1l}iq Valtelline : Ceppina 

 stands at 3865 feet on a terrace of some extent ; at Morignone is a 

 well-marked terrace at 3770 feet ; another at Mondalizza, 3120 feet ; 

 at Sandalo is a very extensive terrace at 2940 feet, 300 feet above 

 the Adda, of which a sketch is given at p. 115 ; and about 100 feet 

 below is another of less extent : an important one is seen at Tiolo, 

 2690 feet, and another equally important above Grosio at 2330 feet, 

 and at Sernio at 1700 feet. Below this I did not follow the valley, 

 having entered it at Tiranno from the Bernina. 



On the south side of the Bernina the highest terrace is at about 

 5650 feet, some way below La Rosa ; and there are several others, of 

 which I have not the elevations, between this and Posciavo, which 

 stands at 3323 feet. 



In Val Bregaglia there is a small terrace at Carrel at about 5200 feet, 

 and another equally small a little above Casaccia at about 5000 feet. 



* M. Studer informed me that a moraine near Berne rests on a high terrace of 

 worn debris ; and M. Rozet states that, throughout the French Alps, the ancient 

 moraines rest on the diluvial deposits (Bull. Soc. Geol. France, 2 serie, vol. xii. 

 p. 246) ; therefore there can be no doubt that these terraces were formed before 

 the period of the great extension of the glaciers. 



