There seems no doubt that this is another refrigerator. The cold water
of the winter snows percolates into the gravel mass and refreezes, and,
owing to the bad conductive quality of the material, the gravel remains
frozen later than the soil elsewhere in the neighborhood. The fact that
the well went through a frozen gravel stratum when dug, proves that it
is not alone the air that sinks into the well itself, which makes the
ice. The fact that the well freezes on the whole less than formerly,
apparently partly owing to the digging up of some of the gravel close
by, goes to prove the same thing. The fact that the well generally
freezes solid every winter, shows that although some of the gravel
mass possibly remains frozen all the time, much of the ice is renewed
each year. This is especially important as proving that the ice found
in gravel deposits is due to the cold of winter and not to a glacial
period, although, of course, no one could say for how long a time the
ice was forming and melting; and this process might date back to the
time of the formation of the gravel mass.
I could learn nothing of any similar place near Brandon, except that
Mr. Luce said that in an old abandoned silver mine in the neighborhood,
he had once seen ice during hot weather.
FREEZING TALUS ON LOWER AUSABLE POND.
On the eastern side of Lower Ausable Pond, Essex County, New York,
at the foot of Mount Sébille or Colvin, there is a talus of great
Laurentian boulders, which fell from the mountain and lie piled up
on the edge of the lake. Among these boulders, at a distance of
about five hundred meters from the southern end of the lake, there
are spaces, several of which might be called caves, although they are
really hollows between the boulders. On the 12th of July, 1898, I
visited this spot with Mr. Edward I. H. Howell of Philadelphia. From
several of the rock cracks we found a draught of air flowing strongly
out, as tested by the smoke of a cigar. The air was distinctly icy and
there could be no question that there was a considerable quantity of
ice among the rocks to produce the temperature.
In three places we found masses of ice. One of these hollows was small,
and the other two were much larger. One of the latter was almost round
in shape, and perhaps three meters in diameter; with a little snow near
the mouth and with plenty of ice at the bottom. The other was a long
descending crack between two boulders which joined overhead, and with
the bottom filled by a long, narrow slope of ice, perhaps seventy-five
centimeters in width and six meters in length, set at an angle of about
thirty-five degrees. The ice was hard and non-prismatic.
The cold air affects a large area of land around the boulders. Mr.
Howell called my attention to the flowers of the bunch-berry, which he
said were at least two weeks behind those on the surrounding mountains.
The same was true of _oxalis_, a pretty white flower, of which we found
several beds in full bloom.
Public-domain text, read in full here on John Shaqi.
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