He
omits to explain why there should be anything exceptional in the winter
phenomenon of the crevices among the stones.
There are two other places in Bohemia where ice is found in summer. One
is on the Steinberg, in the county of Konaged;[132] it is a small basin,
surrounded by trees, where, in the middle of summer, lumps of ice are
found under basaltic _debris_. This ice is only formed, according to
Sommer, in the hottest part of the year. The other is on the
Zinkenstein, one of the highest points of the Vierzehnberg, in the
circle of Leitmeritz. It is described by Sommer[133] as a cleft, five
fathoms deep, in the basaltic rock, where ice is found in the hottest
seasons. Professor Pleischl put this assertion to the test by visiting
the spot in the end of August, when he found no signs of ice.
Another writer in Poggendorff[134] describes a somewhat similar
appearance on the Saalberg. Here ice is found on the surface from June
to the middle of August; and that, too, with a west exposure and in
moderate shade. In July, the ice was so abundant that it could be seen
from some distance: it was half a foot thick, and yielded neither to sun
nor rain.
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