NATURAL HISTORY AND PHYSIOGRAPHY OF NEW BRUNSWICK. 543 
„ oi some sixty feet in height, not truly vertical, but of several 
leaps. Below these streams the country opens out somewhat, and 
the plateau becomes lower, though the river continues swift, 
broken and shallow. Mullins Stream enters by a narrow stony 
mouth, and very probably its original course was farther south, 
as mapped in Note 93. Finally, passing into an extensive burnt 
Princes Pine country, the river, never relaxing its swift stony 
character, reaches the gorges of the Square Forks. 
We note now, the probable origin of the streams belonging to 
the South Branch. Their characters and directions make it seem 
plain that they are long pre-glacial, and in their lower courses 
parts of the -ancient Northumbrian system of valleys. That they 
are smaller and look less ripe than the old parts of the Lower 
North Branch and North Pole is due probably not to a lesser age, 
but to a lesser drainage basin. Like other rivers of that system 
they are still working back at their heads into the central plateau, 
and they have no doubt undergone many subsequent changes, 
whereby some branches have been thrown from their older courses 
into new and shorter ones. But the elucidation of these questions 
must await more detailed study. 
The Clearwater and Sheephouse Branches. 
Of these I know nothing more than is stated above and shown 
by the map. 
The North Branch. 
The North Branch of Sevogle rises on the easterly slope of 
the Kagoot, or Bald, Mountain plateau, very near to a principal 
source of the South Branch, and starts eastward through an open 
burnt country. This open country is part of a curious area 
stretching northward clear through to the northwest, and includ- 
ing the remarkable broken area about the source of that river, 
described in an earlier note (Note 78). In this area the original 
plateau has been carved down to a kind of long basin, with low 
ridges separating very irregularly-running valleys, eastward of 
which the original plateau still exists. The North Branch is at 
first a very sluggish dark-colored stream of alternating dead- 
waters and boulder rips, increasing somewhat in slope and current 
