13 



SW. Parallel divisional planes intersect the face of the rock at irregular distances of one , 

 two and more feet, dipping southerly about -4a . The rock is a syenitic greenstone con- 

 sisling chiefly of crystallized felspar in which dark green hornblende is disseminated , fre- 

 quenlly in aggregalions mixed with granules of felspar , sometimes the one and sometimes 

 the other predominaling. It also occurs in small cloudy spots and fibres of extreme tenuity 

 in the fclspathic base so as to give it a faint varying greenish hue. At the base of the 

 rock are large angular fragments of a dark blackish greenstone similar to that of Pulo 

 Sejahat. 



To the east of Tanjong Tajam along the southern shore rocks are abundant. I landed 

 at an open sandy place where there were marks of footsteps and ascended through the jun- 

 gle by a crooked path , half concealed beneath brushwood , to the brow of the hill. Here 

 an acre or two has been recently cleared by Malays who occupy two little huts or ratber 

 pondos. Close below on the E. is the bottom of a valley separating this from the adjacent 

 hill, and running NNE. and SSW. The soil is sandy clay and seems to be decom- 

 posed granite of a light reddish colour. Granile very hard and with quartz apparently predo- 

 minating protrudes at some places. It is covered by small parallel veins or fissures running 

 E. and W. and SE. and NW. The faces of two of the blocks are very slightly grooved. 

 In the soil are some pieces of altered rock like those which abound on many hills in 

 Singapore } and which I had considered altered granite. One piece which I picked up is 

 quite calcined to appearance like the ordinary scoriae of Singapore. 



On, or rather in front of, the beach, and within the influence of the tide, there are 

 large blocks of various sizes and from 20 to 3 or 4 feet in height. On the beach behind 

 them are smaller rocks, and further in large blocks again , projecting from the soil of the 

 hill side. The E. side of one of the latter has a singular aspect , appearing as if, to the 

 depth of 3 or 4 inches, it had been torrificd. The surface is rough, semivesicular and blac- 

 kened , the sides of veins or fissures reddish black. The interiour is like the half decom- 

 posed granite found in fragments on Kaynaris hill in Singapore. The SW. face of one of the large 

 blocks on the beach slopes seaward and is furrowed , but the furrows are not very regular 

 or well marked. This rock is a syenite. It nearly resembles that of Mr. Dtge's hill in Sin- 

 gapore, but the hornblende is of a lighter green. On the SSW. side of the next large 

 block to the west, the grooves face the SSW. On the sea face there is a deep split or 

 crevise half way through the rock , and varying from 2 to 3 feet in breadth. lts direction is 

 about NE. by E. The NNW. side of the rock has large grooves which face the SW. nearly. 

 On the W. side there is one groove and on the NW. none. 



Bevond this (to the W.) a large flattish slightly convex rock occurs somewhat in external 

 aspect like that of P. Sejahat. 



Further W. there is another extended convex ledge. The surface at some places appears as 

 if it had been much acted on by fire, so as to be covered with a rough partially vesicular 

 coaling of altered granite. Where most altered, and also partially in the veins or fissures , 

 it in some degree resembles the ferruginous scoriaceous parts of the torrified sandstones to the 

 S. of Singapore Town. Where least altered the granite resembles the ferruginous fragments of 

 Kaynaris hill. This rock is traversed by two rough horizontal grooves and numerous veins 



