Ice Crystals
hexagonal figures with angles of 60°, which water always assumes when it passes from the liquid to the solid state. The crystals of ice cannot ordinarily be seen, because in freezing they are so crowded together ; but in thawing, the heat rays act first on the outsides of the crystals , dissolving them to water.
ICELAND ciple. But further experiments made by McConnell and Mügge between 1890- 1895 showed that this elasticity is noticeable in some cases but not in all. This elasticity of the ice crystals is now regarded as the true explanation of the movement of glaciers, even though it has not yet been proved that the yielding quality of the ice does not increase with the temperature.