At Capetown, near Dundas, C. W., while the navies on the Great Western Railroad were digging through a swamp, they came across a stream of quicksand so fine as to have no grit to it. The stream is of a pale lilac. As this substance runs out from below, the top of the ground falls in. The track they had laid for drawing the dirt cars on has in many places fallen in, leaving the end of the rails sticking out in some places, while in others they have been swallowed up in toto. It is a curiosity to behold the springs at the source of this singular fluid. It boils up like-a pot over a fire, depositing the heavier particles around the mouth of the crater, until it assumes the shape of a mound, the top of which is flat and in boiling motion.