268 



DESCRIPTION OF THE 



resting, not only on account of their picturesque appearance, but also as illustrating 

 the means by which the Lake is gradually enlarging its southern boundary. Some 

 of the arches are circular, but most of them are pointed. In the space of two hun- 

 dred yards, at one point, I counted over fifty arches, all possessing great regularity, 

 and resting upon pillars almost as symmetrical as though they had been subjected 

 to the chisel of the artisan. Through these arches, the waters of the Lake dash with 

 every swell, and their unceasing play has hollowed out numerous deep caverns. Two 

 caves were particularly noticed, supported at intervals by pillars of all sizes, from 

 twelve feet to half the number of inches, in diameter, and forcibly reminding one 

 of the descriptions of the celebrated cave of Elephanta. Regular architraves, friezes, 

 and cornices are constantly seen, but it is only occasionally that a pillar shows a 

 base, as they are sunk beneath the waters of the Lake. Some of the arches are 



BED SANDSTONE; SOUTH SHORE OF LAKE SUPERIOR. 



large enough to permit the passage of a Mackinaw boat. There is generally from 

 twenty to forty feet of sandstone resting on the arches, the layers being nearly 

 horizontal, and supporting a capping of majestic forest trees, giving to the whole 

 scene an exceedingly grand and picturesque appearance. 



d 

 b 



b 



d, d, d. Gravel beds, with some large pebbles, 

 c. A bed containing boulders. 

 //, />, b,b. Ited and yellow sand;'. 

 if. lied sandstone. 



Beyond Bark Point, the shore is bound by hills of red clay and marl, with occa- 

 sional exposures of red sandstone at various heights. In the vicinity of Eush River, 

 the banks of sand and red clay are high, with seams of gravel and small boulders 

 running through them horizontally, near their summits, while numerous boulders of 



