102 
BULLETIN OF THE NATURAL HISTORY SOCIETY. 
Across the drift of this basin the main river flows quietly 
between low wooded banks and through long reaches of Stillwater 
separated by lines of boulders or gentle rips. Gradually it be- 
comes swifter, rapids develop, and low ridges appear, and thus 
it continues, a very pleasing river for the canoeman, down to 
the Narrows, where it leaves the basin and plunges abruptly 
into the highlands, from which it does not issue until after 
Rocky Brook is passed. Throughout its course in the highlands 
the valley is deeply cut into a wider trough valley, which can be 
seen from various burnt hills along its course. Passing down 
from the Narrows (simply some marked ledges of granite), the 
river is everywhere swift and much broken by rapids (mainly 
caused by ledges of slate), which are worst at Slate Island and 
Burnt Hill, while the valley walls are steep and backed by fine 
hills and ridges. At Slate Island and McLeans Brooks the 
valley opens out somewhat, and the latter brook occupies a valley 
far wider and more open than the present stream could have 
formed. Farther east the country becomes high again, but just 
above Burnt Hill there are evidences of an old high gap through 
which the Burnt Hill River perhaps emptied southward through 
Lower Hayden Brook. At the mouth of this river are clear 
evidences of the old pre-glacial rock floor into which this river 
is now cutting, and there are traces of a pre-glacial valley to the 
southward of the present course. Below Burnt Hill the river 
continues swift but shallow, and winds in a deeply-cut valley 
amid splendid great wooded ridges and hills, offering some of 
the wildest and finest river scenery in all New Brunswick; and 
so it is down to the Clearwater, where granite hills appear. 
Here, theoretically, one looks for signs of an old high gap con- 
tinuing this river to the southward, but such I could not find. 
Then the river continues for a time of much the same character, 
but with the country gradually falling off somewhat, down to 
the southerly turn beyond Rocky Brook. 
Through all of its course from the Narrows to below Rocky 
Brook, the highlands are fully as prominent on its south as on 
its north side. This highland mass extends southward to a 
