soon to discover that it was not so, and that he was still there upon tolerance. It was on the third day after our forming our camp near the Indian caves that the tragedy occurred. Challenger and Summerlee had gone off together that day to the lake where some of the natives, under their direction, were engaged in harpooning specimens of the great lizards. Lord John and I had remained in our camp, while a number of the Indians were scattered about upon the grassy slope in front of the caves engaged in different ways. Suddenly there was a shrill cry of alarm, with the word "Stoa" resounding from a hundred tongues. From every side men, women, and children were rushing wildly for shelter, swarming up the staircases and into the caves in a mad stampede.
Looking up, we could see them waving their arms from the rocks above and beckoning to us to join them in their refuge. We had both seized our magazine rifles and ran out to see what the danger could be. Suddenly from the near belt of trees there broke forth a group of twelve or fifteen Indians, running for their lives, and at their very heels two of those frightful monsters which had disturbed our camp and pursued me upon my solitary journey. In shape they were like horrible toads, and moved in a succession of springs, but in size they were of an incredible bulk, larger than the largest elephant. We had never before seen them save at night, and indeed they are nocturnal animals save when
