the western semicircle, and then exploring the east side, completing the circle, and returning over the summit at night. . . .
During this walk, in looking toward the summit, I first observed that its steep, angular projections and the brows of the rocks were the parts chiefly covered with dark brown lichens, umbilicaria, etc., as if they were to grow on the ridge and slopes of a man's nose only. It was the steepest and most exposed parts of the high rocks alone on which they grew, where you would think it most difficult for them to cling. They also covered the more rounded brows on the sides of the mountain, especially on the east side, where they were very dense, fine, crisp, and firm, like a sort of shagreen, giving a firm hold to the feet where it was needed. It was these that gave that Ararat brown color of antiquity to these portions of the mountain, which a few miles distant could not be accounted for, compared with the more prevalent gray. From the sky blue you pass through the misty gray of the rocks to this darker and more terrene color. The temples of the mountain are covered with lichens, which color it for miles. . . .
We had thus made a pretty complete survey of the top of the mountain. It is a very unique walk, and would be almost equally interesting to take if it were not elevated above the surround-
