346 me. j. b. sceivenok on the [June 1 9 13,. 



Peninsula and its branches have their origin. The Kedah-Singgora 

 Eange consists of hills of no great altitude. Exact measurements, 

 I believe, have not been made ; I doubt whether any of the 

 summits reach 1000 or even 800 feet above sea-level. 



The beginning of the main granitic axis is shown on the- 

 sketch-map (PI. XXXV), and the range is traced between Kelantan 

 and Perak, Pahang and Selangor, into Negri Sembilan, where it 

 breaks up into smaller ranges. This granitic axis will be referred 

 to as the Main Range. 



In the north the Main Range is as yet imperfectly known. I 

 have marked it on the map as though it were a broad granite- 

 outcrop ; but my own notes in Upper Perak prove that the granite 

 is associated with other rocks, such as crystalline limestone and 

 wollastonite-schist. The sketch-map must not, therefore, be taken 

 as indicating in this part of the Peninsula one unbroken granite- 

 outcrop, but rather as showing the area over which granitic out- 

 crops form important structural features. 



Branching off from the Main Eange near its commencement are 

 granitic outcrops that end in the granite of Penang. These outcrops 

 form hills in Southern Kedah and in Province Wellesley. They are 

 not connected one with the other, so as to form an unbroken chain 

 of mountains. Kedah Peak is another granite-mass. 



In the upper waters of the Krian Eiver the granite of the Main 

 Eange forms great mountains, behind which are other granitic peaks- 

 inthe north of Perak. One well-defined spur, however, comes down 

 in a south-south-westerly direction, forming the eastern boundary of 

 the Larut District and ending in the granitic hills of the Dindings.. 



Another spur is given off from the Main Eange between the 

 Perak and Kinta Eivers, known as the Kledang Eange. 



In the south of Kinta the Bujang-Malaka granite-mass marks a 

 westward protrusion of the granite of the Main Eange ; and there is- 

 some evidence that this granite-mass may be connected with the 

 granite of the southern part of the Kledang Eange, at no great 

 depth from the surface. < 



Another protrusion of granite from the Main Eange juts out, 

 towards the centre of Selangor. The hills formed by this mass end 

 at Eawang, but small intrusions of granite are known on the west,, 

 and an isolated granitic hill occurs at Kuala Selangor. 



Intrusions of granitic rocks are known on the coast of Xegri 

 Sembilan and Malacca. These may be regarded as the last out- 

 crops of the granite of the Main Eange. 



Another isolated granite-hill is found at Jugra in Selangor. Its 

 relation to the Main Eange is at present unknown. 



Returning to Perak, we find between Krian and Larut an isolated 

 range of quartzite, conglomerate, and shale, the Semanggol Range ; 

 and quartzite-hills are found near Telok Anson. In Selangor such 

 hills form a large part of the State. 



On the east of the Main Range, I have little first-hand in- 

 formation from Kelantan, but the hills in the large State of Pahang 



