198 
BULLETIN OF THE NATURAL HISTORY SOCIETY.” 
Kedron, found its lowest outlet to the eastward, where it naturally 
followed the direction of the general slope of the country, which 
is here to the northeast. It has since cut to the rock bottoms of 
the two eastern valleys, as well as through their intervening 
ridges, but not to the bottom of the western valley, where it still 
runs over the drift.* 
3. The Northwest River from the Y oho to the Forks. — At its 
junction with the Yoho the character of the Oromocto changes 
completely. The valley is broad, open, mature ; the river, still shoal 
and swift, though less so than above, winds extensively among 
wide intervales and fine terraces (all well-settled) over a drift bot- 
tom showing ledges only rarely and on one side. This character 
continues but with lessening drop to Tracy, where there is a small 
post-glacial fall at a bend of the river (the old valley being to the 
south) and beyond with still gentler current to Fredericton Junc- 
tion, where the river turns abruptly to the northward, forming a 
series of post-glacial falls and rapids. The pre-glacial valley is 
doubtless here on the right bank, though I did not trace it. Below 
this the river runs into intervales and winds about among them to 
the Forks. 
It is perfectly plain that this part of the river occupies 
an ancient, mature and extensive valley, the post-glacial falls 
at Tracy and Fredericton Junction representing only local devia- 
tions from the general course. Moreover this character extends 
continuously up the valley of the Yoho as far as can be seen from 
their junction ; and since, as the maps show, the Yoho is the direct 
continuation in direction of this part of the valley I think there is 
no doubt that, morphologically, this part of the river and the Yoho 
occupy the same ancient valley, of which the Oromocto above the 
Yoho is sim])ly a post-glacial branch. 
4. South Oromocto Lake and the South Branch. — This part 
of the river I have not visited and know nothing of. Noting the 
direction of the lake, however, its relation to Mahood’s Lake, to 
the small lakes northwest of it and to the head of Shin Creek, I 
think it is extremely probable that all of these occupy one very 
ancient valley, which in former times ran across the southern high- 
lands, giving a continuous river from the Lepreau to Cranberry 
Lake by I.yon Stream. (Se:e the map and that with Note 75). 
This connection, however, is probably long pre-glacial, and Shin 
Creek probably took the drainage of Lyon Stream in immediatelv 
pre-glacial times. I have seen the junction of the South Branch 
with Back Creek, and it enters the latter by a rather narrow valley 
* Of course it is possible that tliere is a pre-glacial valley in this same general direc- 
tion, but this seems wholly unlikely. 
