40 
Records of the Geological Survey of India. 
[vol. IV. 
Sabatan. In the lower part of the Shu an enormous thickness of beds is fairly exposed, 
but greatly disturbed and faulted ; hence the junction of the Axial and Nummulitic group 
is not clear. Higher up the stream the dip is more regular, varying from north-east by east 
to east-north-east, but always high. Some of the sandstones are hard and have strings of 
quartz pebbles irregularly disseminated through them, and sometimes the pebbles constitute 
bands through the rock. In one instance I noticed a quartz boulder in one of these conglo¬ 
meratic sandstones, 0 inches in length, among the finer constituents, but such a case is rare. 
Some of the coarser beds, however, on this stream tax my power of describing adequately. 
The most remarkable was a little below a spot where a wall of rock makes the channel 
almost impassable, a sandstone, with here and there huge angular schistose fragments 
embedded in it. I satisfied myself that the fragments were really derivative and not the 
result of any segregative process in the rock itself. Some of these angular pieces very little 
worn by attrition were more than a cubic foot in content. I have not noticed any 
similar bed elsewhere, and it is probably local as respects the peculiarity of its included 
fragments. The general variety of coarse conglomerate is that of a rock mainly composed 
of partially rounded or well-rounded fragments with very little matrix, in some instances 
verging on a breccia in aspect and origin, but these beds are local and exceptional, though 
perhaps belonging to the upper group and characteristic of it. 
Above the last group (c) occurs a vast thickness of beds which I have sub-divided into 
three groups (d, e,f), all of which occur in uninterrupted sequence, hut each possessing a certain 
appearance which distinguishes it from the other. In the aggregate the thickness of these 
groups is over 2,300 feet. But though it is tolerably certain that the whole of these belong to 
the Axial group, it is not equally certain that none of the beds included in the Nummnlitics 
do not belong to the former group, as from their disturbed condition the beds themselves 
do not give very precise ground for drawing the line between the groups with exactness. 
I shall now pass to the consideration of the imposing hill of Shuedoung at the head of 
the lllowa valley, returning to the remainder of the Hlowa section when describing the 
Nummulitic group. 
Shuedoung or Shuaylounggyee, situated fourteen miles south-west from Mendoon, is one 
of the most conspicuous and picturesque hills in Pegu, not so much from its actual height as 
from the abrupt way in which it rises from among the lower hills which encircle it, and from 
the exceedingly rugged and precipitous character of its outlines. 
It is situated between the sources of the lllowa and Pemyouk streams, and marks a 
remarkable change in the Arakan range, of which in some respects it is the culminant peak. 
Instead, however, of the range continuing its course northward past Shuedoung, it here 
takes a sharp sigmoid curve to the westward, before again trending north ; giving thereby 
the appearance to Shuedoung of standing out from the inaifi range like a promontory round 
which the sources of the Hlowa wind, so that the drainage pertaining to the Pegu side of 
the mountain, received by the Hlowa and Pemyouk streams, represents an arc of no less 
than 300 degrees at least, with the hill as a centre. The hill itself is a ridge of ‘ axial’ shales 
and grits, much indurated and culminating in a serrated cluster of rugged pinnacles. The 
prevailing strike of the ridge corresponds with the normal strike of the axials, and is about 
north-north-west, and viewed from the north the bedded structure of the rocks composing 
the hill is plainly perceptible, but from an easterly view the hill presents all the appearance 
of being composed of some granitic mass, so sharply curved and defiant are its tor-like crags. 
The ascent is effected over two long spurs, one to the north, running down into the Hlowa 
stream, the other to the south into the Pemyouk, ray colleague selecting the latter whilst 
I ascended by the former route. From my colleague's account of his ascent from the south, 
it is abundantly clear that the beds on that side are higher in the series than those on the 
