BY THE REV. J. E. TENISON-WOODS,,F G.S., F.L.S., &C. 1181 



had been much less denudation on the eastern than on the western 

 side of the range. This may be owing to the prevailing rains 

 falling more abundantly on the western than on the eastern sides 

 of the mountains. 



As a consequence of this, the tin workings appear to be (with 

 no exception known to me) on the western slopes of the ranges, 

 where the waste and wash have been probably greater. 



Batu Kurau. 

 Between Mount Bubu Group, Mount Ijau Group and the sea, 

 there are no hills except small outliers, mostly of paleozoic clay. 

 These have evidently, at one time, been united to the ranges. 

 North of the Larut River there is an isolated limestone mountain 

 near the Kurau River called Batu Kurau. It is similar to Mount 

 Pondok in the Gapis Pass. It is quite unconnected with the main 

 range, and I'ises out of the plain between the spurs which form 

 the valley of the Kurau River. There is also a small detached 

 range dividing the valley of the Krian River from that of the 

 Kurau, 



Main Range. 



The geology of the main range is apparently like the rest of 

 the country, namely granite, slates, and limestone, with traces of 

 basaltic I'ocks. The general structure of the range can best be 

 studied from some of the mountains to the Westward. It forms 

 a most imposing boundary to the whole of the western horizon. 

 In the most northerly portion visible there is a mountain of 

 rounded outline which appears to be very lofty. This range 

 then declines to the southward with a somewhat serrated outline, 

 with an average height of over 3000 feet. At a point near the 

 latitude of the centre of the Kinta range the chain rises, and in 

 the distance is seen a peak which is probably over 8000 feet high. 

 This hill may be the one named the Sugar-Loaf Hill by some. 

 The Malay name is a subject of uncertainty. It is the most 

 distant mountain of its particular group and is a conspicuous 

 object of conical outline. South and west of this the chain rises 

 into a gi^and cluster of peaks, the highest of which is over 8000 



