<321 GENERAL REPORT ON THE RESIDENCY OF SINGAPORE. 
> 
much disturbed—at Tanjong Rawie on the same island sandstone 
was seen intersected with quartz veins. Pulo Chombun was 
found to be composed of green stone in perpendicular strata striking 
south east and north west. At the rocks off the north point of 
Tikong Kichi hard shaly and schistoze rocks were found—near 
Tanjong Kopo is black porphyry, at Tanjong Ti'ilo’ Palei there 
is a gradation from stratified rocks to greyish porphyry and trap, 
and further westward the formation takes a more granitic ap¬ 
pearance. At Nanas rocks are found, black and blue trap 
graduating into porphyry, whose base is black with white specks— 
opposite on the Ubin shore traps are found, and all the western 
and southern portion of the same island was found to be composed 
of granite. At Tanjong Pongal soft shales and ironstone were 
found, but the observations were unsatisfactory. At Kampong 
Bentan, Bam and Ayer Biru, the formation was assumed to be 
granite by judging from the appearance of the soil, at Siletar was 
granite, up Sungie Pongal ironstone was found. At Sungie 
Sinebong Puteh quartz pebbles were found, at Sungei Sembawang 
the formation was judged to be granitic. At Sungei Lunchir granite 
was found, and on both sides of the Strait from this point as far as 
Sakodei and Kranjie, the formation was found to be the same. 
At Sungey Danyah soft sandstone exists in horizontal layers. Up 
the Kranjie Batang Hari was found hard arenecious shale. At 
Marambongis clay slate, dip 30“ S. strike E. and W.—at Karang 
Kampong the same formation, dip S. W. 45“ strike S. E.—again 
at Tanjong Blukang dip 90° strike S. E., at Tanjong Labah are 
sandstones and shales, at Ayer Bajao ironstone, at Sungei Bri the 
same formation. At Jaman Dudu—granite, at Tanjong Pirgam 
is purple sandstones and at Pulo PiFgam is purple granite. At 
Sungei Toan is soft arniceous shale dip 20o S. strike E. ani W# 
At Tanjong Tanali Runtoh soft shale—at Sirimbun argillacious 
shale, to the eastward of this is a purple shale, and advancing further 
eastward is a red shale, and at Sungei Purumpun are indurated 
shales. At Sungei Malayu the same is found. At Tanjong Putri 
silicious indurated shales are found. At Puruput purple srgileceous 
shales are found all of whose strata are much disturbed. At Sun 
Li' Kang the formation is shales alternating with sandstones ; at 
Kampong Bhan green and reddish granite was found—at Sungti 
Morei siliceous shales much distorted. At Tanjong Raw r ang there 
is clay slate—strike N. W. and S. E. dip 45° S. W.—at Tanjong 
Gul clay slate—in the Siiat Sambulan and islands adjacent, shales 
of different degrees of induration and deposition were found, the 
general strike being N. W. and S. E. At. Tanjong Telaga and 
Ayer Jambu sandstone was found—at Rittan Simangkut iron¬ 
stone. On Outer Sikra clay slate and ironstone were found 
alternating, dip 30° S. strike E. and W. At Sungie Benui 
are shales, at Batu Berlayar sandstone dip 90° strike, N. W. and S. 
E. At south point of Bukum are shales and sandstones dip 90° 
