1884. ] Geography and Travels, 917 
mass, the watershed of which is not very distant from the Indian 
ocean; while the forests form ‘a continuous girdle, only a few 
leagues in width, concentric with the coast and surrounding a 
vast area which is entirely without trees, and in its mountainous 
portions, that is to say, throughout two-thirds of its extent, is 
even without shrubs. The western part of the island is flat. 
Cosmos gives an account of Captain Crema’s journey in Morocco 
in 1882 with a map which corrécts many defects in previous maps, 
and supplies many omissions. In the same issue G. Bianchi gives 
an account of his explorations in the Gurageh territory in 1880, 
with a map of the Galla territory south and east of Shoa. 
The Aruwimi —It is known that the Congo, at the head of 
‘its bend to the north of the equator, receives a great trib- 
utary, the Aruwimi, from the north-east, but the course of this 
river is still unknown. A large river called the Welle, with nu- 
merous tributaries, the Gadda, Gurba and ‘the considerable river 
Bomokandi, has been thought to be the Aruwimi, but Dr. Junker 
hopes to be soon able to adduce proof that it belongs to the sys- 
tem of the Shari, flowing into Lake Tchad, while he feels inclined 
to identify the Nepoko, a large river with numerous tributaries 
bordered by vast treeless swamps, with the Aruwimi of Stanley. 
Asta—The Nan-schan Mountains —The explorations of Col. 
Przewalsky in the north-eastern part of Thibet have unraveled 
_ the complications of the mountain-chains of this region. The 
tains are the basin of the Koko-Nor and the ring-like plateau of 
saidam. The Nan-schan consists of at least three parallel ranges 
and forms an alpine region of considerable width, broadest nort 
and north-west of the Koko-Nor and at least forty versts wide in 
the meridian of Ssa-tcheon. Ssa-tcheon, situated in an oasis, 1S 
the chief town of the north-westerly prolongation of Kansu that 
extends between Mongolia and Thibet. Col. Przewalsky has 
given names to the subordinate ranges, one of which, the Hum- 
Rum and Artemisia campestris, like that of the desert. The > “ta 
schan mountains are rich in gold, as are also the sands of the 
he river, which rises’ on their slope. 
