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scenery of SWITZERLAND. 
place in 1512. It closed the mouth of the valley of 
Blegno; and from the railway the great scar on the 
mountain is clearly visible. 
The following profiles, giving sections of the 
valley, represent the successive phases in its history; 
part II. has passed through stage I, part III. through 
both the preceding. 
Below Chironico the river ceases to excavate, 
and is now filling up the valley. Beautiful evidence 
of its former action, however, still remains in the 
smooth concave surfaces of rock, 150 feet above the 
present water level, near the second bridge which 
carried the old road over the river. These can 
easily be distinguished from the more completely 
polished but convex surfaces, characteristic of ice 
action. They are very well shown at higher levels, 
and there are few more imposing remains of glacier 
action than in the Ticino Valley. As in the Reuss, 
the “Doorposts” of the lateral valleys, as for in- 
stance at Osogna, Cresciano, T.odrino, and Moleno, 
are highly polished. It is striking to find these 
clear proofs of ancient glacier action, not only among 
the Chestnuts of Osogna, but even further down the 
valley among the vineyards of Bellinzona, and the 
Cypresses, Olives, and Orange groves of Locarno. 
And this brings us to another feature which 
