BY THE REV. J. E. TENISON-WOODS, F.G.S., F.L.S., &C. 1179 



Mount Iuas. 



Mount Iuas, as understood by the Malays of Selama, is the 

 highest point of another detached group north of the Krian and 

 Selama Rivers. At a few miles distance from the foot of this 

 range it seemed somewhat over 4000 feet high, and the highest 

 point of an isolated group of ridges. 



Keddah Peak. 



North of Iuas in the State of Keddah, there is, close to the sea 

 a detached group of mountains, round the southern base of which 

 the Keddah River flows. Keddah Peak is the highest summit 

 and probably over 4000 feet above the sea. 



Other Groups. 

 In the north of Perak near Patani there are other groups of 

 mountains, notably the Gunong Kendrong Group, which is quite 

 detached from any other hills. 



Perak River. 



The whole of these groups are sufficiently connected to prevent 

 any drainage fi-om the central range from flowing directly to the 

 West Coast of the Peninsula. Thus the Perak River which has 

 its source in the Keddah and Patani Mountains flows to the 

 southward in a winding course of over 200 miles. It has many 

 tributaries the most important of which are the Plus and Kinta. 



Plus River. 



The Plus River has its sources in the high mountain group east 

 of Mount Iuas and in the main range. It flows round the southern 

 end of the Bukit Panjang Range and then joins the Perak. 



Kinta Ranges. 



South of this junction of the Plus is a group of mountains, called 

 by some the Kinta Ranges. This group is about 25 miles long. 

 It is quite detached from all the others having a generally north and 



