540 
BULLETIN OF THE NATURAL HISTORY SOCIETY. 
would accord wholly with the theory, given in Note 93, that this 
valley is a part of one of the old Northumbrian system, and that 
through it the Little Southwest below the Lower North Branch 
continued its course to the eastward. 
Mullins Stream. 
This stream heads in Mullins Stream Lakes, a well-known 
hunting region, which I have seen. The lake is open, and appar- 
ently moderately deep, with low bouldery shores, but higher 
valley walls (especially to the north), and a gap to the westward 
towards Guagus Lake. The lower lake is similar, and below that 
is a great deadwater, below which I have not seen the stream. I 
have been told, however, that it is a shallow rocky stream, almost 
lacking in fish, and that its chief feature is a fall of several feet 
situated just where the North Branch enters it. 
Thus all the data I have about this stream accord fully with 
the physiographic history sketched in Note 93, that the Guagus 
valley swung through the lakes and eastward into the South 
Branch Sevogle, while its main stream carried the waters of the 
Lower North Branch. 
The Western Branches. 
As the map clearly shows, several large affluents of the South 
Branch rise close over towards the basin of the Lower North 
Branch. I have been able to see all of these, and the lofty inter- 
vening country, along McClinton’s north line, which I have fol- 
lowed from Guagus Lake to near the Little North Branch. I 
have also followed the west line to near the source of Guagus 
Stream. As may be clearly seen from the summit of Kagoot and 
elsewhere, all the country on and west of the line is a lofty 
plateau, an extension of the great central plateau, deeply cut by 
the valleys of the stream, which are cutting their way back north- 
westerly into it. 
The first Sevogle water on the line north from Guagus is 
Barracks Brook (the stream south of it being wrongly shown on 
McClinton’s plan as running east) ; it is here a quiet stream in 
