NATURAL HISTORY AND PHYSIOGRAPHY OF NEW BRUNSWICK. 545 
The Little North Branch, which is said to have a fine broken 
fall of nearly sixty feet in height three-quarters of a mile up from 
its mouth, is a large cleat stream. Below it the valley continues 
for a time of the same deep rocky, almost “ interglacial ” char- 
acter, its valleys cut some 300 or 400 feet into the plateau. But 
gradually the valley opens out, the country begins to fall off, and 
the whole appearance of the river indicates greater maturity. 
The river bed, with its clear brown water, continues everywhere 
of the shoal, rocky-obstructed, much-falling type which is so 
characteristic of the entire Sevogle system. Near the foot of this 
southeasterly stretch come some cliffs, and then the river plunges 
into the Big Narrows, an irregular, wild post-glacial gorge with 
a broken fall of four or five feet near its upper end. A little 
below it receives Peabody Lake stream, coming from Peabody 
Lake, a famous place for trout, and swings to the eastward. It 
then becomes less winding, more open with a lower plateau, with 
beaches and intervale banks, and all the signs of considerable 
maturity. These characters become more marked around its 
northerly turn; and then to the eastward, just before swinging 
south, the river enters a fine great gorge, or series of gorges, cut 
through soft rusty slates into a flat plateau, with often vertical 
walls one hundred feet in height, which extends for three-quarters 
of a mile or more, and constitute the finest I have seen in New 
Brunswick. But, aside from its fine scenery, this gorge possesses 
another feature differentiating it from any others known to me in 
the Province, namely, it is not of post-glacial formation. This 
is, I believe, clearly shown by the fact that it is much wider than 
the bed of the present stream, which runs through it almost 
entirely over drift, and with low intervale points or a narrow 
flood-plain upon one side or the other; while in addition its falls 
do not occur at its head, but at various points, and especially near 
its foot at a place where a true post-glacial gorge occurs within 
the older and greater gorge. That they are of glacial origin all 
their characters show, and since they are not post-glacial, I have 
no question that they are of truly “ interglacial ” origin, as has 
already been noted (Note 105). Below this gorge the valley 
becomes again open and the river wide and shallow for a mile 
ci two, when it enters yet another interglacial gorge with a fine 
