176 Scientific Intelligence—Meteorology. 
Cambrian of Sedgwick. 
Upper Bala, including Bala and Hirnant 
Bite Geour ane nes shales, flagstones, and conglo- 
Lower Bala. 
CAaMBRIAN : 
A lat d hyry. 
Sata. FEstIniog Teta nai alate ae ee 
Grovr. Lingula flags. . 
Harlech grits. 
Bancor Grovr. { Llanberris slates. 
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SCIENTIFIC INTELLIGENCE. 
METEOROLOGY. 
1. InOmenaks Fiord, known as Jacob's Bight, lies the famous Hali- 
but fishing Station.—Up this fiord, in the chasms of the trap, those 
enormous glaciers accumulate which have made Jacob's Bight, per- 
haps, the most remarkable locality in the genesis of icebergs on the 
face of the globe. It is not uncommon to have the shore here com- 
pletely blocked in by these gigantic monsters; I myself counted 
one evening, the 3d July, no less than two hundred and forty icebergs 
of primary magnitude, from the deck of our vessel. 
This remarkable station is worthy of the attention of all those in- 
dividuals who take an interest in the fisheries. 
2. Are the floating Icebergs of the Polar Seas of the nature of 
_ nevé ?—I had incidentally met with the remark of Professor Forbes, 
that “the floating icebergs of the Polar Seas are in the most part 
of the nature of nevé;’’ and, while at a distance, I looked upon 
the substance of the mass before me as identical with the “ firn,”’ 
or consolidated snow of the Alpine glaciers, I now found cause, for 
the first time, to change this opinion. The ice of this berg, although 
opaque and vascular, was true glacier ice, having the fracture, 
lustre, and other external characters of a nearly homogeneous growth. 
The same authority, in speaking of these bergs, declares that ‘‘ the 
occurrence of true ice is comparatively rare, and is greatly dreaded 
by ships.” From this impression, which was undoubtedly derived 
from the appearance of a berg at a distance, I am also com- 
pelled to dissent. The iceberg is true ice, and is always dreaded by 
ships. Indeed, though modified by climate, and especially by the 
alternation of day and night, the Polar glacier must be regarded as 
strictly atmospheric in its increments, and not essentially differing 
from the glacier of the Alps. 
The general colour of a berg, I have before compared to frosted 
silver. But when its fractures are very extensive, the exposed faces 
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