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Such a mass of ice, when exposed to a temperature sufficiently high to dissolve it, does not melt from the surface and disappear by a gradual diminution of its bulk, like pond-ice, but crumbles into its original granular fragments, each one of which melts separately.
A cake of pond-ice, such as is daily left in summer at our doors, if held against the light and turned in different directions, will exhibit all these phenomena very distinctly, and we may learn still more of its structure by watching its gradual melting.
I had considered them to be compressed air-bubbles; and though I cannot, under my present circumstances, repeat the experiment of Dr. Tyndall upon glacier-ice, I conceive that the star-shaped figures represented upon Pl.VII. figs. 8 and 9, in my "Système Glaciaire," may refer to the same phenomenon as that observed by him in pond-ice.
As impossible to break the silence with your tongue, as to break pond-ice ten inches thick with your knuckle.
Instead, it was lodged in pond-ice in Buzzard Coulee across the provincial border in western Saskatchewan. blazing across the sky east of Red Deer, Alberta, and west of Saskatoon, Saskatchewan, a little more than a week ago, it disintegrated as it entered Earth's atmosphere, scattering fragments far and wide.