192 Records of the Geological Survey of India. [voL. xi. 
and near Pallang Roa in Cheduba. Beds of more or less carbonaceous sandstone 
have been met with in one or two other places. As I shall subsequently have 
occasion to describe these coal-seams in detail, with reference to their economic 
value (p. 207), it is unneccssaiy here to do more than mention their occurrence. 
Besides the above strata, some bands of limestone of considerable thioknoss 
are to be found, which will be subsequently more fully described (p. 221). One of 
the most important of these is near Yanthek, where the rock bears some resem¬ 
blance in aspect to a coar.se yellowi.sh-white chalk, but does not mark like it, being 
as hard as ordinary limestone. It is rather brittle, breaking with a tolerably 
smooth fracture. The bedding is generally oRscure, and masses up to 20 feet thick 
occur in which none is apparent. A limestone of very similar character also 
occurs near Tsinbok. In the Pagoda HiU, at the town of Ramri, and again 
a mile or two further east, a thin band of such rock occurs interbedded with 
sandstone and shale of the usual type. South-east of Tsetamd limestone of 
a different character occurs. It is of a pale gray or grayish-white color, rather 
hard, not brittle, and instead of the chalky look of the above, ha,s a minutely 
crystalline stinicture. It is very massively bedded, and there are, apparently, at 
least two bands, each not loss than 25 yards thick, with sandstone between. At 
Tengbain similar minutely cry.stallino limestone is associated with rock of a much 
coanser grain, which in hand specimens is not unlike some varieties of limestone 
from the old metamorphic series. Such cry.stalline limestone, again, at Alle 
Chaung and Tsiine, is associated with grayish chert, which is very cellular and 
rusty on the weathered portion, and is intersected by very numei’ous strings of 
white quartz: some surfaces of the rock arc sprinkled with little limpid rock 
crystals. Cherty and calcareous seams are irregularly interbanded with each other, 
the beds with which those rocks are associated being ordinary sandstones. Simi¬ 
lar chei’t, with or without accompanying limestone, is met with not unfrequently 
elsewhere, but the bands do not appear to exceed a few yards in thickness 
With the exception of the limestone associated with chert at xllle Chaung, 
which is dolomitic (and contains minute crystals of raag-netite disseminated 
through it), all the lime.stoncs 1 have examined are purely calcareous. 
The rocks, generally, throughout the islands, have been greatly tossed about, 
the strike being far from constant, and the dip extremely irregular. Not uu- 
frequcntly it is vertical. But owing to the softiie.ss of the shales,, and their 
clunchy chai-acter, and the facility with which much of the sandstone gets 
broken up superficially, the lie of the rocks is often very obscurely seen. 
It would be certainly rash, on the strength of such cursor}’’ examination 
as mine, to assert that the rocks throughout the islands belong exclusively to 
one series, but as far as my observations go, they do not suggest any grounds 
STxfRciently strong foj- attomjjting a sepai’ation. 
The only fossils I observed were some obscure markings in the sandstone at 
Likmau, and there is so much lithological resemblance between some of the 
tertiai’y gi’oups of Burma that little can be gleaned as to the ago of the 
Ramri rocks from their mineral characters. It may be remarked, however, that 
■ Mr. W. Theobald mentions similar chert as occurring in Negi-ais and nuinuiulitic strata of 
the I’cgu Division ; Mem. G. S. I., X, 300. 
