401 



and by which such pebbles may have been transported 

 to some distance in the low grounds, where they are 

 found ? If so, in what direction are the vallies from 

 the pebbles thus collected, and at what distance ? 



llth. If it is reasonable to suppose that the pebbles 

 so collected, may have been transported from the 

 mountains by a current, or currents, and they are 

 throicn up into hills, or small eminences; it is a fair 

 conclusion, that the currents by which they were trans- 

 ported, were checked or opposed in their course, by 

 opposite or lateral currents from other directions. To 

 determine this, it is necessary to examine whether 

 there are any deep vallies or gaps, through the moun- 

 tains or hills, on the opposite side of the valley, where 

 such pebbles are found, and through which currents 

 may have flowed in a direction opposite to the first. 



This fact may be often observed in the high and 

 sudden rise of waters, by heavy rains, melting of 

 snows, &c. In order, however, to obtain an accurate 

 view, and correct information on this point, it is neces- 

 sary to examine the subject from an elevated situation; 

 as on the side or top of a mountain, from which the 

 eye can take in at one view, all the narrowings and 

 widenings of the great valley ; the sinuosities of the 

 mountains ; and the cross cuts or gaps of the mountains, 

 that open into the great valley or vallies. 



12th. If from such a view, there should be found 

 vallies, or gaps, through the opposite range of moun- 

 tains, what is their breadth, extent, course, and di- 

 rection, in relation to the accumulated* masses of peb 





