looking on at the proceedings with great respect; and we had not minded affording them this cheap satisfaction; but at last the joke seemed to be getting stale, so we proceeded some to sit and some to lie down at full length, and to go on eating limes in the presence of the August company. Thereupon they informed us what would be the cost of guides and candles, and we eventually made a bargain with them and started on foot.
On looking at the map of the State of Mexico, there is to be seen a river which stops suddenly on reaching the mountains of Cacahuamilpán, and begins again on the other side, having found a passage for itself through caves in the mountain for six or seven miles. Not far from the place where this river flows out of the side of the hill, is a path which leads to the entrance of the cave. A long downward slope brought us into the first great vaulted chamber, perhaps a quarter of a mile long and eighty feet high; then a long scramble through a narrow passage, and another hall still grander than the first. At the end of this hall is another passage leading on into another chamber. Beyond this we did not go. As it was, we must have walked between one and two miles into the cavern, but people have explored it to twice this distance, always finding a repetition of the same arrangement, great vaulted chambers alternating with long passages almost choked by fallen rocks. In one of the passages, I think the last we came to, the roaring of the river in its subterranean bed was distinctly audible below us.
Excepting the great cave of Kentucky, I believe there is no stalactitic cavern known so vast and beautiful as this. The appearance of the largest hall was wonderful when some twenty of our Indian guides stationed themselves on pinnacles of stalagmite, each one holding up a blazing torch, while two more climbed upon a great mass at one end called the altar, and burnt Bengal lights there; the rest stood at the other extremity of the cave sending up rockets in rapid succession into the vaulted roof, and making the millions of grotesque incrustations glitter as if they had