4'8 ON THE PARALLEt ROADS 



would naturally issue, and whence it would run bj a gentle 

 course through the High Glen, into that bay of Loch Eoy 

 which is now Glen Turret, and which, in this view of the mat- 

 ter, we must call the Bay of Turret. 



Let us now consider what was the state of Loch Roy when 

 ttt its highest level. A glance at the map will show, that the 

 south-eastern extremity of its present glen, must have been 

 shut in by two barriers, or rather two portions of one great 

 barrier, of which the round hill of Bohuntine formed the central 

 part, and of which also INIealderry might, or might not, have 

 constituted a fragment. This barrier then, must have run in 

 a semicircular manner, from the projecting angle of Crag-dhu 

 on the east, towards the south-eastern side of the roundish hill 

 of Bohuntine; and must again have extended itself from the 

 western side of that hill, across Glen Collarig, so as to be joined 

 to the faces of the mountains in the northern angle of that 

 little valley, and having the Gap on its eastern, and Glen Col- 

 larig on its western side. The supposition, with regard to this 

 barrier, is founded on the consideration, that it could not have 

 been hicfher up the glen, since it must have been lower down 

 than the points, where the shelves indicating the existence of 

 the independent Loch Roy are abruptly broken off; and it is 

 not so probable, that it could have been much lower down 

 than this, since neither Shelf 2d nor Shelf 3d, are ever again 

 met with, after they disappear thus suddenly. Moreover, we 

 cannot 20 farther to the south-westward, without interfering 

 with what must have been Loch Spean, — and then, from the 

 inspection of the ground itself, this appears to be by far the 

 most natural and probable position for such a barrier, of which 

 llie very shape of the rounded hill of Bohuntine, seems to tes- 

 tisfy, that it formed a part. But at the tim ewhen this barrier 

 existed, this southern end of Loch Roy must have been 



its 



