The way to farther advance is now more difficult and through a jagged crevice of threatening appearance, but the trip is made in safety and with comparative ease, and brings us into Notre Dame, one of the largest chambers in the cave and perhaps the finest, although where so much is fine that may be uncertain. The display of box work and crystal is sufficiently gorgeous to do honor to the famous old cathedral of France, the ceiling especially being a masterpiece of the builder's and decorator's arts; but the grandest portion, which a visitor recently returned from foreign travel called The Russian Castle, on account of the magnificence of the large box work and pearly crystal masses, should rather be known as the great cathedral's crowning glory, The Altar. Another large room, the handsome Council Chamber, is entered just as that Altar of pearl is lost to view; and from there an up-hill trip is taken through a narrow crevice to Whale Flat, which is the natural history room, with a large whale as the show specimen. Going out from here we enter another crevice which serves as a steep stairway descending to a lower level, and measures from top to bottom one hundred and eighteen feet. This is called Rip Van Winkle's Stairway, and although merely a high and crooked crack in the rock, is very beautiful because heavily coated with crystal, the effect being especially striking at the top where the crystal is partly worn away and leaves exposed patches of red rock. At the foot of the Stairway is the first room containing water, and is called the Gypsy Camp. It is the most charming chamber yet visited, with not the smallest spot of plain or common rock visible. The ceiling, walls, floor, and groups of fallen rocks, are all unbroken masses of pearly calcite in crystals of varied sizes, with here and there a patch coated over with pure white carbonate of lime, or supporting a bunch of fragile egg-shell, which is a thin, hollow crust of lime carbonate, almost invariably having the pointed form of the dog-tooth spar. And there are also beautiful mats and banks of dainty white carbonate flowers. While waiting here for the guide to go in quest of the lunch we had carelessly left behind, the time was utilized in measuring the room, which is a small one. The size of the cave and our limited time for seeing it, prevented much-desired measurements from being taken in all parts of the cave.