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liULLETIN OF THE NATURAL HISTORY SOCIETY. 
With the constant wear on the crown of the reef at Union Point 
in the “Falls” it might be supposed that the tides would gain more 
and have easier access to the river. But it seems a question 
whether this cause of abrasion — the rushing water with its load of 
mud and sand — has had any appreciable effect in historic times in 
reducing the height of the barrier; and there certainly has been a 
countervailing force at work, tending to lift the barrier higher. 
In a former Bulletin attention was called to a force operating later 
than the glacial period to raise certain portions of the solid rocks 
around St. John. Of this, evidence may be seen on the hillside south 
of the “ valley” in St. John, where, in a short space on the slope of 
the hill, the rocks have been raised five feet since the glacial period. 
There seems nothing to indicate subsidence at the barrier at the 
“Falls,” and whatever evidence there is, favors elevation. 
It would seem then that we are forced to regard differential uplift, 
or in other words, warping of the earth’s crust, as the cause of the 
phenomenon observed in Harris’ Cove. And, further, it would seem 
that this movement was slow and continuous, as there were not only 
marsh-surfaces at five feet below the present marsh only ; but the 
marsh-surface was many times renewed, from the lower layers obser- 
ved to the present surface. 
As bearing upon the phenomenon of the drowning of the upper 
part of the lower Kennebecasis valley since Pleistocene times, one 
might call attention to a like condition of things effecting the valley 
of the St. John river, as observed by members of this Society, when 
the summer camp of observation was held by it at French Lake some 
years ago. 
During exploration along the south shore of the Maquapit Lake a 
curious short creek was observed without outlet, save two, close 
together, on the lake shore. This short creek seemed to be a bend or 
loop of a creek, once existing, which had been obliterated, except for 
this bend, by the encroachment of the lake. 
One of our members, Mr. S. W. Kain, who spent- some time at 
INIaquapit Lake last summer when the water of the river was low, has 
traced this submerged creek under the shallow water at the south end 
of the lake, and found that Ring Creek is indeed a bend of what was 
formerly a continuous creek or thoroughfare from French Lake to 
Orand Lake. And further, he made the interesting discovery that 
