Camp 16 was similar in many ways to Camp 14. It had about the same altitude ; it was at the western end of a rugged mountain spur, and on the immediate border of a huge southward flowing glacier. On the lower portions of the cliffs, near at hand, there were velvety patches of brilliant Alpine flowers mingled with thick bunches of wiry grass and clumps of delicate ferns. Most conspicuous of all the showy plants, so bright and lovely in the vast wilderness of snow, were the purple lupines. Already the flowers on the lower portions of their spikes had matured, and pods covered with a thick coating of wooly hairs were beginning to be conspicuous. There are no bees and butterflies in these isolated gardens, but brown flies with long-pointed wings were abundant. A gray bird, a little larger than a sparrow, was seen flitting in and out of crevasses near the border of the ice, apparently in quest of insects. Once, while stretched at full length on the flowery carpet enjoying the warm sunlight, a humming bird flashed past me. Occasionally the hoarse cries of ravens were heard among the cliffs, but they seldom ventured near enough to be seen. These few suggestions were all there was to remind us of the summer fields and shady forests in far-away lands. From Camp 16 Kerr and I made an excursion across the Agassiz glacier, while Stamy and Lindsley returned to a lower camp for additional supplies. We found the glacier greatly crevassed and the way across more difficult than on any of the ice-fields we had previously traversed; but by dint of perseverance, and after many changes in our course, we succeeded at last in reaching the western bank, and saw that by’climbing a precipice bordering an ice-cascade we could gain a plateau above, which we knew from previous observations to be comparatively little broken. We returned to camp, and on. August 18 began8the ascent of the glacier in earnest. We were.favored in the task by brilliant weather.