2:2 
Records of the Geological Survey of India. 
[vol. VH. 
to contend against. It lies in the general strike of the Sanktoria seam, which is well known 
to be one of the finest properties in the field, and it may be the continuation of that bed to 
the north-east. 
A very complete series of analyses of thirty different coals has lately been made by 
Mr. Tween under Dr. Oldham’s direction, and I find that those samples furnished by the 
Dumarkunda, Banal i, Sanktoria, Mangalpur, and Raniganj collieries combined the greatest 
freedom from ash with high percentage of carbon. 
Names of Collieries. 
Carbon. 
Hydrogen. 
Oxygen 
and 
Nitrogen. 
Sulphur. 
Ash. 
Percentage 
of coke in 
undried coal. 
Dumarkunda 
71-86 
4-67 
8*78 
*69 
14*0 
76-8 
Sanktoria ... 
68-89 
452 
1227 
•82 
13*5 
746 
Rdniganj ... 
69-45 
4-82 
10-98 
*35 
14-4 
72-2 
Banali 
69-98 
4-79 
10-06 
•37 
148 
69-4 
Mangalpur... 
68-81 
4-8 
1211 
•88 
133 
67*8 
The loss of water in the Dumarkunda, Sanktoria, and Raniganj coal was 2 per cent., 
in the Banali coal 4 per cent,, and in the Mangalpur coal o'8 per cent. 
Amount of sulphur small .—The amount of sulphur is in each instance considerably 
under 1 per cent.—a fact which will not readily be credited by those who think that 
Indian coals are always saturated with iron-pyrites. 
I append a statement of the amount of sulphur in some good class British coals :—* 
Northumberland. 
Steam Burn coal (steam coal) ... 
Peareth coal (gas coal) 
Low main seam. Buddies Hartley colliery (steam coal) 
Nottinghamshire. 
Shircoak colliery, belonging to Duke of Newcastle 
South Staffordshire. 
Rooves ... 
Bushey Park seam 
Pemberton yard 
Lancashire. 
Blaina, South Wales. 
Ellvein coal (steam coal) 
Three quarter vein (furnace coal) 
Dowlais, South Wales. 
Ras Las 
Bargoed big-coal (blast furnace coal) 
Scotland. 
Argesline ... 
Walls end Elgin 
Sulphur in 100 parts of coal. 
’55 
... -86 
... 1-51 
... -92 
... 1-00 
... I'Ol 
... 1'82 
... -75 
... -81 
... 1-01 
... 1-07 
... 1-23 
... 1'51 
Percy’s Metallurgy, 1861, Vol. I, pages 99, 102.—Crookes and Roll rig, 1870, Vol. Ill, page 469. 
