"Subterranean as this foaming river looks by day, it looks like a river in cloud-land by night. The side of the ravine which is in shadow, is one undistinguishable mass of black, with its wavy upper edge in strong relief against the sky, and, as the foaming stream catches the light from the opposite and moonlit side, it is outlined distinctly on its bed of darkness, and seems winding its way between hills of clouds, half black, half luminous. Below, where all is deep shadow except the river, you might fancy it a silver mine laid open to your view amid subterranean darkness by the wand of an enchanter, or (if you prefer a military trope, my dear General), a long white plume laid lengthwise between the ridges of a cocked hat."
"The earth does move, notwithstanding," whispered Galileo, leaving the dungeon of the Inquisition: by which he meant his friends to understand, that if the earth did move, the fact would remain so in spite of his punishment. But a less orthodox assembly than the conclave of Cardinals might have been staggered by the novelty of the new philosophy. According to Laplace, the apparent diurnal phenomena of the heavens would be the same either from the revolution of the sun or the earth; and more than one reason made strongly in favor of the prevalent opinion that the earth, not the sun, was stationary. First, it was most agreeable to the impression of the senses; and next, to disbelieve in the fixity of the solid globe, was not only to eject from its pride of place our little planet, but to disturb the long-cherished sentiment that we ourselves are the centre--the be-all and end-all of the universe. However, the truth will out; and this is its great distinction from error, that while every new discovery adds to its strength, falsehood is weakened and at last driven from the field. That the earth revolves round the sun, and rotates on its polar axis, have long been the settled canons of our system. But the rotation of the earth has been rendered _visible_ by a practical demonstration, which has drawn much attention in Paris and London, and is beginning to excite interest in this country. The inventor is M. Foucault; and the following description has been given of the mode of proof: