CHAP. X THE LEWIS GLACIER 173 



rises in this lake. To the south of the Hohnel Valley is the 

 head stream of the Guaso Mairi, and the valley may therefore 

 be named after this river. For the main valley on the south 

 side of the mountain I propose the name of the Hobley Valley, 

 as it is probably the one which the British East Africa Com- 

 pany's expedition would have entered had it traversed the 

 whole of the forest zone. The tarns upon the floor of this 

 valley I beg to call after Mr. W. Bird Thompson, the caravan 

 leader of that expedition. When we come to the glaciers and 

 the central peak the names are not so obvious. The actual 

 peak consists of five pyramids, viz. the double central peak, two 

 large aiguilles which tower above the Lewis Glacier, and a sharp 

 triangular peak on the western arete. The last, 17,500 feet 

 in height, I named Point Piggott, after the last Administrator 

 of the British East Africa Company. The glaciers are on the 

 south-western quadrant of the mountain. There are none to 

 the south-east, and I could not see any to the north-west, though 

 they may occur there, having been hidden by clouds at the 

 time when I might otherwise have seen them. The principal 

 glacier is on the south side of the mountain, and to it I gave 

 the name of the Lewis Glacier, out of respect to the late Henry 

 Carvell Lewis, whose brilliant researches have thrown so much 

 light on glacial problems in England and America. The other 

 glaciers are the Tyndal Glacier on the west side of the 

 mountain (PI. XVII.), and the Darwin Glacier in the valley 

 between the other two. The latter was so named as we owe 

 to Darwin the first precise description of a glacial valley in 

 England. The Heim and Forel Glaciers are two small corrie 

 glaciers on the western face, which were named as they proved 

 very useful in surveying. The limits of the three valley glaciers 

 were marked by moraines. 



The most interesting excursion made from the camp on the 

 agglomerate ridge was the ascent of Mount Hohnel. I took 

 with me my favourite porter, Fundi Mabruk, who was especially 

 useful, as he had accompanied Teleki during his visit to Kenya 

 and had been with him to the highest point then reached. We 

 crossed the Hohnel Valley, and up a cwm, which from the fine 

 crags of phonolite at its head I called Phonolite Cwm. This 

 led us to the Teleki Valley, which we followed to a col leading 

 south-eastward to Lake Hohnel. From this point we climbed 



