The former is a bright fairy-like stream, gushing out of a small cavern at the foot of a lofty precipice clothed with clinging trees; but the Loue flows out from the bottom of an amphitheatrical rock much more lofty and unbroken.

The stream itself is broader and deeper, and glides with an infinitely more majestic calmness from a vast archway in the rock, into the recesses of which the eye can penetrate to the point where the roof closes in upon the water, and so cuts off all further view.

The calmness of the flow may be in part attributed to a weir, which has been built across the stream at the mouth of the cave, for the purpose of driving a portion of the water into a channel which conveys it to various mill-wheels; for, at a very short distance below the weir, the natural stream makes a fall of 17 feet, so that, if left to itself, it might probably rush out more impetuously from its mysterious cavern.

The weir is a single timber, below the surface, fixed obliquely across the stream on a shelving bank of masonry, and the farther end meets the wall of rock inside the cave.

Near it we saw some glorious hart's-tongue ferns, which excited our desires, and I took off boots and stockings, and endeavoured to make my way along the weir; but the face of the masonry was so very slippery, and the nails in the timber so unpleasant for bare feet, and the stream was so unexpectedly strong, that I called to mind the proverbial definition of the better part of valour, and came back without having achieved the ferns.