I expect the problem resembled that which is attributed to King Charles, viz., "How it was, that if a dead fish was put into a vessel full of water it immediately overflowed, but that, if a live fish was put in, it did not do so;" and I have some suspicion the solution is the same in both cases.

Among other strange places, is one which rejoices in the name of "Fat Man's Misery." At one minute the feet get fixed as in the stocks; at another, the upper portion of the body is called upon to make a right angle with the lower; even then, a projecting point of the rock above will sometimes prod you upon the upturned angle, in endeavouring to save which, by a too rapid act of humility, you knock all the skin off the more vulnerable knee.

Emerging from this difficulty, and, perhaps, rising too hastily, a crack on the head closes your eyes, filling them with a vision of forked lightning.
Recovering from this agreeable sensation, you find a gap like the edge of a razor, in going through which, you feel the buttons of your waistcoat rubbing against your backbone.

It certainly would be no bad half-hour's recreation to watch a rotund Lord Mayor, followed by a court of aldermen to match, forcing their way through this pass after a turtle dinner.
The last place I shall mention is the one which, to me, afforded the greatest pleasure: it is a large hall, in which, after being placed in a particular position, the guide retires to a distance, taking with him all the lights; and knowing by experience what portion of them to conceal, bids you, when he is ready, look overhead.

In a few seconds it has the appearance of the sky upon a dark night; but, as the eye becomes accustomed to the darkness, small spots are seen like stars; and they keep increasing till the vaulted roof has the appearance of a lovely star-light night.