At 11 A.M. we reached this forest and found it to be one of bamboos, at first open, and then getting denser as we ascended. We had noticed a complete and sudden change in the air from that we had just passed through. It became much cooler and more pure and refreshing, and all went along at a faster rate and with lighter hearts. Now that the Zanzibaris had come so far, they all appeared anxious to ascend as high as possible, and began to chaff each other as to who should bring down the biggest load of the “white stuff” on the top of the mountain. At 12.40 P.M. we emerged from the bamboos and sat down on a grassy spot to eat our lunch. Barometers, 21·10 and 27·95/100. Thermometer, 70° F. Ahead of us, and rising in one even slope, stood a peak, in altitude 1200 feet higher than we were. This we now started to climb, and after going up it a short distance, came upon the tree-heaths. Some of these bushes must have been 20 feet high, and, as we had to cut our way foot by foot through them, our progress was necessarily slow and very fatiguing to those ahead. At 3.15 P.M. we halted among the heaths for a few moments to regain our breath. Here and there were patches of inferior bamboos, almost every stem having holes in it, made by some boring insect and quite destroying its usefulness. Under foot was a thick spongy carpet of wet moss, and the heaths on all sides of us, we noticed, were covered with “old man’s beard” (_Usnea_). We found great numbers of blue violets and lichens, and from this spot I brought away some specimens of plants for the Pasha to classify. A general feeling of cold dampness prevailed: in spite of our exertions in climbing, we all felt the cold mist very much. It is this continual mist clinging to the hill-tops that no doubt causes all the vegetation to be so heavily charged with moisture and makes the ground under foot somewhat slippery.