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322 island and tired myself to death “resting” a couple of days and studying human villainy, with the landlord of the Grande Sentinelle for a model. So we went to Procida, and from thence to Pozzuoli, where St. Paul landed after he sailed from Samos. I landed at precisely the same spot where St. Paul landed, and so did Dan and the others. It was a remarkable coincidence. St. Paul preached to these people seven days before he started to Rome.

Nero’s Baths, the ruins of Baiæ, the Temple of Serapis; Cumæ, where the Cumæn Sybil interpreted the oracles, the Lake Agnano, with its ancient submerged city still visible far down in its depths—these and a hundred other points of interest we examined with critical imbecility, but the Grotto of the Dog claimed our chief attention, because we had heard and read so much about it. Every body has written about the Grotto del Cane and its poisonous vapors, from Pliny down to Smith, and every tourist has held a dog over its floor by the legs to test the capabilities of the place. The dog dies in a minute and a half—a chicken instantly. As a general thing, strangers who crawl in there to sleep do not get up until they are called. And then they don’t either. The stranger that ventures to sleep there takes a permanent contract. I longed to see this grotto. I resolved to take a dog and hold him myself; suffocate him a little, and time him; suffocate him some more and then finish him. We reached the grotto at about three in the afternoon, and proceeded at once to make the experiments. But now, an important difficulty presented itself. We had no dog.

At the Hermitage we were about fifteen or eighteen hundred feet above the sea, and thus far a portion of the ascent had been pretty abrupt. For the next two miles the road was a mixture—sometimes the ascent was abrupt and sometimes it was not: but one characteristic it possessed all the time, without failure—without modification—it was all