The river was teeming with fish. At night, after their work had been completed, the Indians, who camped on the water’s edge, threw in their lines and never failed to catch a goodly supply. While in our presence the men always wore blue cotton trousers and the women loose dresses of the same color, but when alone they threw aside all clothing. Occasionally a light canoe containing women and children passed our camping-site, but they always remained as near as possible to the opposite bank and paid no attention to us whatever if we chanced to call to them; in fact, they could not even be induced to look in our direction. The nights were always sultry and it rained frequently. If the weather permitted, a huge fire was built; into this a steady stream of fireflies or click-beetles winged their way to destruction. Late one night we heard a queer pattering on the top of the tent-fly; back and forth scurried the little feet, and up and down the sloping roof. Our acetylene-lamps revealed a family of opossums which had discovered an ideal playground. Often, too, we heard cautious footsteps near by, and the suddenly flashed light disclosed the glowing eyes of a deer, tapir, or jaguar, which gazed stupidly a moment into the dazzling brilliance and then darted away. On account of the dampness mould formed so rapidly that cameras and all leather goods had to be cleaned daily, and there was great difficulty in drying specimens. We had frequent views of Duida. Each morning at about ten the mist drifted from the summit and revealed the jagged, rocky peaks; our calculations placed the altitude of the mountain at approximately five thousand five hundred feet. Toward the Orinoco the mass presents a bold front, the sheer walls of granite rising to a height of several thousand feet. The western slope is gradual and any attempt to ascend the mountain should be made from that side. Cutting the trail required more time than we had anticipated. It was our intention to remove the equipment to the very base of Duida, and this was impossible until a suitable way had been prepared. The intervening country is rolling and the hollows are filled with a network of deep, water-filled canyons; across these trees had to be felled to provide a means of crossing. Also, neither the Maquiritares or the Venezuelans proved to be very industrious, and were about as poor a class of assistants as can be found. However, work progressed steadily, and there came the day when the last bridge had been placed across the winding river, and we were able to proceed to the foot of Duida.