596 Note on the Khyttk Phyii Coal. [Nov. 
zig-zag from D to B, where it disappears, apparently passing under 
the hill. The seam is nearly vertical, from 80° to 85° dipping to the 
north. The order of the strata from the north was—1, the reddened 
grey sandstone; 2, a black or dark-grey sandshale, mixed with thin 
veins and grains of coal; 3, the hard brittle shining jet coal, sometimes 
covered with a yellow argillaceous substance, with layers of the sand- 
stone and fibrous bituminous shale ; then came the pure coal, succeeded 
below by the same mixed substance, and this followed by a hard grey 
sandstone. We followed the vein down as well as our imperfect means 
would permit, but lost it always I think at the depth of 2 or 3 feet. 
Including the soft lavers it was generally from six inches to a foot in 
thickness, and could be distinctly traced from D to B by the blackish 
grey appearance of the stone. My attention was most excited how- 
ever by the abundance and apparent purity of the iron pyrites, which 
was extracted during such imperfect operations.” 
Lieut. Fotey subsequently extracted a considerable quantity of the 
Syneg Kyong coal, and of the curious silicified coal found here and else- 
where in contact with it* : some of the latter specimens are almost wholly 
converted into silex, and give an insight into the process of formation 
of the fossil wood so common in Arracan, Ava, and Assam. As to the 
denomination of the Khyiwik Phya coal, whether it be what used to be 
called a true coal or a more modern lignitef, itis of little importance now 
that all such formations are attributed to a similar origin, namely, the 
gradual deposition of vegetable matter along with the sedimentary sands, 
and mud of an ancient river or estuary. It is the extent and thickness 
of the bed which is of importance, and in this the Syneg Jvyong coal 
seems to be deficient as far it has been hitherto explored. This 
circumstance and the quantity of pyrites may deprive it of a part of its 
value, although it is otherwise ofa very rich and good quality, and well 
adopted for getting up boiler heat. The analysis of the larger speci- 
mens sent through Mr. H. Waursr, Commissioner of Arracan, being 
more accurate than that noted at a former meeting, is here repeated. 
Oogadong Silicified 
Syneg Kyong coal. lignite. coal with ditto. 
Volatile matter.... 37.1 63.0 32 
Warbons. 3... sss 60.5 35.5 4.3 
Red ferruginous ash, 2.4 1.5 0.0 
Silex... 5% -f) «+ 92.5 
100.0 100.0 100.0 
* This appears to be the case in a specimen marked No. 5, Phitringu coal, 
which is of the same nature as the silicified coal which accompanied Mr. Wax- 
TER’S specimens of Sandowy lignite, and is stated by him to exist in such abun- 
dance there. 
+ See page 606. of the present number. 
