508 Scientific Proceedings, Royal Dublin Society. 
be described as a non-caking bituminous coal composed of dis- 
tinet lamin of a bright jetty, and of a dull, more earthy rock. 
The average of thirty-one assays* of samples from different 
mines gave the following results :— 
Moisture, . : : é : 4:8 
Volatile, . : : ’ 5 | axte 
Carbon (fixed), . 4 ; 5 BBP 
Ash, 5 : ° : 5 Sale 
100-0 
The cost of steam coal at the pit’s mouth is from 24 to 
3 rupees, say 5 to 6 shillings. In Calcutta the same coal costs 
14 to 16 shillings, and in Lahore about £5. 
VI.—JERIAH.T 
The Jeriah coal-field is situated in the valley of the Damuda 
river sixteen miles west of the Ranigunj field. Its area is about 
200 square miles. 
The following groups only occur, the highest groups of the 
Ranigunj field being unrepresented :— 
Ranigunj, . : . . 2,200 feet. 
Tronstone shales, . : E COORE. 
Barakar, . : 2 - 38,000 ,, 
Talchir, : : . o | OO) 4 
6,800 _,, 
The thickness and quality of the seams varies a good deal, but 
there is no doubt, whatever, that this field contains a vast quan- 
tity of valuable fuel. One seam has a maximum thickness of 
sixty-feet. The estimated available coal in this area is 465 
millions of tons. 
Whether this field will ever be worked depends very much 
upon the laying out of a new line of railway communication. 
The exhaustion or partial exhaustion of coal in the Ranigunj area, 
an event still far distant, may lead to special arrangements for 
working it. 
* Vide ‘ Records Geological Survey of India,” Vol. L., p. 155. 
+ Hughes’ ‘‘ Memoirs Geol. Survey India,” Vol. V. “‘ Manual,” p. 185, 
