PART 3.] 
Hughes: Coal in India, 
65 
The same method of calculation has been acted upon in regard to India, in the deter¬ 
mination of the superficial extent of its coal-hearing areas as that applied to other 
countries, and the length and breadth of the tracts over which coal rocks may be presumed 
to extend have been multiplied to give the number of square miles. 
Taking the coal-fields already partially and in whole examined, and allowing for the 
unsurveyed portions of Central India, Assam, Burmali, and the Tenasserim province, &c., 
we may safely assume 35,000 square miles as being within the mark. 
In order to show how these figures are arrived at, I append the following table. 
Besides, however, enumerating the different Indian areas, I have added a list of such 
countries the areas of which I have been able to compile from various sources of reference; 
and I have also noted the countries in which coal is known to occur, but concerning which 
there is no knowledge of the extent of their coal measures By thus enlargening the table, 
I hope its usefulness for the purpose of comparison will be increased:— 
Table of Areas. 
Name of country. 
Area in square 
miles over which 
coal-rocks may 
be presumed 
to extend. 
Remarks. 
India 
35,000 
This mileage is made up as follows :— 
Godavari area (including its affluents) ... 11,000 
Son ... ... ... ... ... 8,000 
Sirgujah and Gangpfir area ... ... ... 4,500 
Assam ... ... ... ... ... 3,000 
Narbada area (including its affluents) ... ... 3,500 
Damdddi... .... ... ... ... 2,000 
Rdjmah&l aroa ... ... ... ... 300 
Unsurveyed and uucomputed areas ... ... 2,700 
Square miles ... 35,000 
United States 
500,000 
The productive area of coal is much less. Professor Hitchcock 
estimates the area of the true carboniferous system at 
230,659 square miles. 
China 
400,000 
This estimate is not thoroughly reliable, but it is certain that 
there is an enormous coal-bearing area in China. 
Australia... 
240,000 
In New South Wales, the coal area is said to be 120,000 square 
miles. In Queensland the same area is supposed to exist. 
Russia 
150,000 
This area is probably far below the real extent of the Russian 
coal-formation. 
India 
35,000 
British America 
18,000 
Great Britain 
12,000 
Mr. Hull gives 5,431 square miles as being stored with coal 
to a depth of 4,000 feet. 
Spain 
8,000 
This estimate is vague. Some authorities give 4,000 square 
miles, and others 2,000. 
Japan 
6,000 
Germany ... 
3,000 
By Germany is meant all the German-speaking provinces, 
except those under Austrian rule. 
France 
2,400 
Austria ... 
2,000 
Some of the Austrian brown coal scams approach the Indian 
seams in thickness. 
Belgium ... 
520 
Trinidad ... 
318 
