99 [Vol. xix 



miscellaneous collection of 200 skins was made during the 

 march. 



" The first camp was formed in the Mubuku Valley^ on the 

 east side of Ruwenzori_, at an altitude of 6500 ft., and was 

 occupied for four months. From it short expeditions lasting 

 for 8 or 10 days were made up to the snows, and it was from 

 this camp that the greater part of the collection was made. 



" From the Mubuku Valley a move was made to the south 

 end of the range, where another camp was formed at an 

 altitude of about 3000 feet, and occupied for two months. At 

 the end of that time another move was made round into 

 Belgian territory with the intention of making a third camp 

 on the west side of the range in a position corresponding to 

 the first camp in the Mubuku Valley. A suitable camping- 

 place was found in the Botagu Valley at an altitude of a 

 little over 7000 ft. ; but, owing to the rebellious state of two 

 of the tribes at the foot of the mountains, it could only be 

 occupied for three days, when matters became so unpleasant 

 that collecting was out of the question, and the expedition was 

 compelled to beat a hasty retreat to Fort Beni, on the Semliki 

 River. This was a great disappointment, as no expe- 

 dition has done any systematic collecting in the district 

 which lies on the west side between the Botagu Valley and 

 the north end, and is the most heavily-wooded part of the 

 whole mountain-range. 



" From Fort Beni a hurried march was made through the 

 forest to Irumu, by an entirely unused road on the west 

 side of the Semliki, no habitations being seen, nor food 

 obtainable for nearly 100 miles. A little collecting was 

 done at Fort Beni and on the way through the forest, and 

 several new birds were obtained. From Irumu an easy 

 march of six days brought us back again to Fort Portal. 



" Although only a few birds were obtained on the western 

 slopes of Ruwenzori, we saw and heard sufficient to enable 

 us to say that all, or nearly all, the species which inhabit the 

 east side above 6500 ft, are found also on the west side and all 

 round the mountain. Ruwenzori is divided into fairly well- 

 marked zones of vegetation; — Below 6500 ft., grass country; 



