Farther eastward, other ice- streams from the Alps be- 

 came predominant, one of which, moving down the Eeuss, 

 deployed ont upon the country lying north of Lucerne 

 and Zug. Still farther down, the ancient glacier which 

 descended the Limmatt spread itself out over the hills 

 and lowlands about Zurich, one of its moraines of retro- 

 cession nearly dividing the lake into two portions. 



G-uyot and others have shown that the superficial de- 

 posits of this portion of Switzerland are just such as would 

 be distributed by glaciers coming down from the above- 

 mentioned Alpine valleys. Uniting together north of 

 Zurich, these glaciers pushed onward as far as the Ehine 

 below Schaffhausen. In Frickthal the glacial ice was still 

 1,200 feet thick, and at Kaisterberg between 400 and 500 

 feet. 



At Lucerne there is a remarkable exposure of pot- 

 holes, and a glaciated surface such as could be produced 

 only by the combined action of moving ice and running 

 water; thus furnishing to tourists an instructive object- 

 lesson. Among the remarkable instances of boulders 

 transported a long distance in Switzerland, is that of a 

 block of granite carried from the Valais to the vicinity of 

 Soleure, a distance of one hundred and fifteen miles, which 

 weighs about 4,100 tons. " The celebrated Pierre-a-Bot, 

 above Neufchatel, measures 50' X 20' X 40', and contains 

 about 40,000 cubic feet of stone ; while the Pierre-des- 

 Marmettes, near Monthey, contains no less than 60,840 

 cubic feet." 



The ancient glacier of the Ehine, receiving its initial 

 impulse in the same centre as that of the Ehone, fully 

 equalled it in all its dimensions. Descending eastward 

 from its source near the Schneestock to Chur, a distance 

 of fifty miles, it turned northward and continued forty- 

 five miles farther to the head of Lake Constance, where it 

 spread out in fan-shape, extending northwest to Thiengen, 

 below Schatf hausen, and covering a considerable area north 



