...fluid, such as tar. His observations were summed up in the words: 'A glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain...inclination by the mutual pressure of its parts.' This is easily explained by means of the principles which we have already laid down; for a glacier...

...known as the Viscous Theory, thus enunciated by its author : " A glacier is an imperfect fluid, or a viscous body, which is urged down slopes of a certain...inclination by the mutual pressure of its parts." What, however, is the cause of the veined structure ; and how does it result from the motion of a glacier...

...aside the previous theories, announces his own, as follows : " A GLACIER IS AN IMPERFECT FLUID, OR A VISCOUS BODY, WHICH IS URGED DOWN SLOPES OF A CERTAIN...INCLINATION, BY THE MUTUAL PRESSURE OF ITS PARTS," (by gravity, of course.) This is illustrated by the motion of a moderately thick mortar, or of melted...

...confidence. . . . My theory of glacial motion, then, is this : — A glacier is an imperfect fluid or viscous body, which is urged down slopes of a certain...inclination by the mutual pressure of its parts," " The sort of consistency to which we refer," proceeds Professor Forbes, " may be illustrated by that of...