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of Garthby and Colerain, from whence it flows 

 in a south-westerly direction for about thirty 

 miles ; part of this distance is but imperfectly 

 known, never having been correctly surveyed : 

 it then assumes a course nearly north-westerly, 

 runs about eighty miles, and discharges itself 

 into Lake St. Peter. In the township of Ascott 

 a branch of it connects with Lake Memphrem- 

 agog, from the extremity of which several streams 

 descend into the state of Vermont; by this 

 means the transport of goods is continued in 

 that direction. As the navigation from Lake 

 Memphremagog to the St. Lawrence is op- 

 posed by many and powerful natural obstruc- 

 tions, a particular account of it will help to 

 shew what patient and persevering industry is 

 required to surmount them. From the outlet of 

 the lake to the place where the stream joins the 

 St. Francis is about 19 miles, in which distance 

 there is a singular alternation of violent rapids 

 and still water where the current is most tedi- 

 ously slow ; about three quarters of a mile 

 before it enters the river there is what is 

 termed a /a//, not indeed from a perpendicular 

 height, but the bed of the river being very 

 much contracted, and the current broken by 

 high ledges of rock, it is impossible for boats 

 to pass it; even single sticks of timber are sel- 

 dom sent down it, as experience has proved 



