A footpath leading through the forest a distance of several miles ended at a manganese-mine which penetrated into the mountainside about three hundred feet. Although the mine had been by no means exhausted, it was no longer worked, owing to the great expense of transporting the ore. The dark, deserted tunnel was an ideal resort for bats of not less than four species; one of them (_Mimon bennetti_) was of considerable size. We entered the mine with a lighted candle, but the bats invariably soon put out the light with their wings. Each kind, it seemed, occupied a different part of the tunnel. At first they were slow to leave their places of concealment in the crevices between the rocks, but after a few days’ persecution numbers of them rushed from the mine and disappeared over the top of the mountain at the mere appearance of the lighted candle in the entrance. The men who accompanied me on these excursions refused to enter the dark opening in the mountainside, as they said it was infested with poisonous snakes; but, although we explored it thoroughly on several occasions, not a single reptile was ever seen. In walking through the forest we always saw animals that were of more than passing interest. One day I surprised a tiger-cat in the trail; it ran a few yards and then started up a tree, rapidly climbing about twenty-five feet, and then clung to the rough bark; it remained perfectly motionless and permitted me to walk up to within a short distance of the base of the tree. A short time later I came upon two cebus monkeys feeding in the branches above the trail. I shot at one of them, wounding it. The other was fully ten yards away, but rushed to the rescue, and taking up the wounded animal started off with it at a rapid pace. Most South American monkeys will promptly desert a comrade in danger or trouble, but in this instance it was a female with her two-thirds-grown offspring, and the mother-love was so much stronger than her fear that she exposed herself to danger without hesitation, in saving her distressed young.