FIVE DAYS IN NAMING. 
491 
ish-white, sandy clay. Beneath, a little Iateritic gravel is 
sprinkled. A series of kampongs stretches along the margin of 
the plain behind the hot swamp. The trees were chiefly the 
mamplam, durian, anu, orgomuti, the pulasan, ramuniah, larig- 
sat, rambi, rambutan and mangis. One of the inhabitants 
seeing me busy with my hammer volunteered to show me some 
black stones with cups which had been hollowed out by the 
dewas. He led me across the flat which joins the Ayer Panas 
plain at its angle, through a kampong full of gornuli trees, 
into the jungle behind. Here lie pointed out some large black 
blocks of the common hard scoriform ironrock or hydrated 
peroxide of iron. In one of these there were three circular 
cavities,—one 2 feet in diameter, 15 inches deep and with a 
rim almost a perfect circle,—and the others about 8 inches in 
diameter. In the interior of the largest cavity there were 
three projecting circular bauds or ridges parallel to each 
other. Other blocks around had hollows but not so sym¬ 
metrical. The rock was an uniform slag-like hard shining 
clay, so that although I was satisfied that it must be a trans¬ 
formed or ironmasked rock, it was impossible to determine 
its original type. In returning 1 examined a large block im¬ 
mediately below the hollowed rocks, and found it to contain 
bluish quartz intermixed with the hydrated peroxide. Much 
cl the same quartz is strewed on the ground further down. 
Beyond this there is a conical heap about 20 feet in circum¬ 
ference at its base, and 4 feet high, consisting entirely, at least 
on the surface, of gravel of different shapes and much of it 
enammeled. Much of it was quite slag-like or ironmasked, 
but many pebbles were a micaceous* rock, and justified 
the belief that this part of the district, like that between 
Ay8r Panas and Alor Gaja, was originally a micaceous 
clay. 
It appeared to me that the cavities were probably formed 
in the same mode as the mammillary excrecences at Pulo 
Tikong Kichi and many other places near Singapore. The 
hot ferruginous gas had first swollen out the laminated rock 
into a bubble and then burst and dissipated the laminse leav¬ 
ing only the edges projecting. 
In recrossing the flat I obtained a fine view of Ophir, which 
instead of an isolated mountain appeared from this point as 
a long range, thus affording a key to its axial direction. At 
the base of the elevated ground behind the hot swamp, a pit 
had been newly dug to the depth of five feet. The upper part 
was whitish and the lower bluish clay, resting on angular 
* Or talc6se. I cannot at present refer to my specimens, 
R R r 
