BULLETIN OF THE NATURAL HISTORY SOCIETY 
428 
here as I am informed by Mr. P. H. Welsh), into the Kouch.bouguacsis 
and thence to the sea. 
6. The Kouchibouguian Val'.ey. Headed in the upper parts of (Mins 
River, (possibly beyond in a part of the upper Nashwaak), crossing to East 
Branch Sabbies River, thence to the Kouchibouguac and SO' to the sea. 
It is likely that another valley headed in Burnt Land Brook, and included 
Muzeroll’s B rooky a part of Cains River and Salmon Brook, and then 
either entered the Kouchibouguac or else the Vinian Valley. 
We consider now the third group of the Northumbrian Rivers, 
those beginning with the Main Southwest Miramichi and extend- 
ing to, but not including, the Nepisiguit. I have been able to 
study personally several of these, with results recorded in 
previous notes of this series, in one of which (No: 54) I have 
given an outline (differing somewhat in details from that he**e 
presented) of the physiographic history of the Miramichi. These 
rivers all have these important features in common, that then- 
upper courses are not, as in the preceding g.oup, in the line of 
their lower courses, buit instead they head in the crystalline 
Central Highlands and flow approximately parallel (though with 
interrelationships still to be worked out) from northwest R) 
southeast , until, reaching later an;l softer rocks, they swing by 
long curves through a right angle, flow for a space across the 
Carboniferous basin in the characteristic southwest to northeast 
direction, and then suddenly, although still in the same formation, 
swing at right angles, some to the north and some to the south, 
into a single trunk river, leaving their original lower courses to 
be occupied by much smaller rivers emptying northeastward into 
the sea. These smaller rivers all turn, near their mouths, towards 
Miramichi Bay, as a result no doubt of the fact that this Bay lies 
in a synclinal 'trough (already mentioned), down tlhe slopes 
of which the rivers naturally tend to turn. The heads of these 
rivers in the Highlands, though they have undergone some 
changes in detail, are, 1 believe, the original heads, and the old 
central watershed and the present one are identical, excepting 
that it is now crossed by the South Branch Nepisiguit and the 
Main Nepisiguit River, a condition earlier explained (Note 70). 
The great curves do not occur exactly at the contact of older with 
