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232 exactly like a broken column in an old Grecian temple, whilst high above, depending from the roof, the point of a huge icicle could be dimly seen.

Even as we gazed we could hear the process going on, for presently with a tiny splash a drop of water would fall from the far-off icicle on to the column below. On some columns the drops only fell once in two or three minutes, and in these cases it would be an interesting calculation to discover how long, at that rate of dripping, it would take to form a pillar, say eighty feet high by ten in diameter. That the process, in at least one instance, was incalculably slow, the following example will suffice to show. Cut on one of these pillars we discovered the rude likeness of a mummy, by the head of which sat what appeared to be the figure of an Egyptian god, doubtless the handiwork of some old-world labourer in the mine. This work of art was executed at the natural height at which an idle fellow, be he Phœnician workman or British cad, is in the habit of trying to immortalise himself at the expense of nature's masterpieces, namely, about five feet from the ground. Yet at the time that we saw it, which must have been nearly three thousand years after the date of the execution of the carving, the column was only eight feet high, and was still in process of formation, which gives a rate of growth of a foot to a thousand years, or an inch and a fraction to a century. This we knew because, as we were standing by it, we heard a drop of water fall.

Sometimes the stalagmites took strange forms, presumably where the dropping of the water had not always been on the same spot. Thus, one huge mass, which must have weighed a hundred tons or so, was in the shape of a pulpit, beautifully fretted over outside with a design that looked like lace. Others resembled