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BULLETIN OF THE NATURAL HISTORY SOCIETY. 
the eastward, passing north of Mullins Stream Lake, while all 
the country southward is at a lower level. Between Guagus and 
Mullins Stream Lake there is an especially low country, which 
probably indicates a former connection between those two basins. 
Little Guagus Lake is also typical of the region, shallow, boggy 
and bouldery. Guagus Stream is said to run throughout its 
course as it does below the lake — a rapid, shallow stream over 
boulders, while the Guagus Narrows indicates, probably, a post- 
glacial gorge. The origin of this system I believe to be, as indi- 
cated in my note on the Northumbrian Rivers (Note 93), the 
upper part representing one of the original valleys, and the lake 
marking the place where it made its right-angled turn into the 
Mullins Stream and Sevogle system. 
Below the Guagus the Branch is said to be rapid and rough, 
especially as it approaches the Little Southwest, where occur a 
series of low fails and rapids, with “ Narrows ” all apparently 
post-glacial. Berton’s original Survey of 1838 marks it as “ very 
rocky and broken for three miles up.” This part of the river is 
in all probability post-glacial, with a pre-glacial channel into the 
bend a mile below, as indicated by my earlier note on the Little 
Southwest (No. 54, page 459). 
Reviewing the origin of the Branch as a whole, it is evident 
that it is homologous with the North Pole, earlier described, and 
that it includes valleys of three or four ages now all combined 
into one system. First the remarkable gaps connecting the 
Branch with the Pole, and their extensions in part to the Walke- 
mik and Guagus, indicate some ancient system of valleys of which 
they are the remnants. Second, is the principal valley of the 
Branch, which is also ancient, as shown by its maturity in the 
face of the hardness of its rocks, and this represents a true typical 
valley of my Northumbrian system. It is still working back at 
its several heads into the central plateau, and it certainly had 
some former connection with the Mullins Stream and Sevogle 
waters. Third, is the lower valley below the Mullins Stream 
connection, which is presumably newer than the part above ; and 
lastly, there is the post-glacial connection with the Little South- 
west Miramichi. Except for its very head, therefore, this stream 
has its older parts above and its newer below. 
