xcvi 
MANGANESE DEPOSITS OF INDIA. 
1907, according to the three different methods of evaluating, and also 
the total value from the beginning of the industry to 1907 : — 
Year. 
Export or 
/. 0. b. value. 
1 c. i. /. vnlue. 
' Ferro-manganese 
value. 
£ 
£ 
£ 
1905 .... 
223,431 
454,364 
2,096,952 
1906 .... 
969,079 
1,502,471 
4,971,998 
1907 .... 
1,748,465 
2,564,115 
5,024,982 
1892—1907 
4,185,927 
6,773,283 
17,422,692 
[ CHAPTERS XXVI AND XXVII.] 
The Mining and Quarrying of Manganese-ores. 
In the former of these chapters the way in which it would be best 
to work the Indian manganese-ore deposits, taking into consideration 
their geological structure, is considered. In the second chapter a 
description is given of the methods actually in use in the Indian man- 
ganese quarries, and attention is drawn to the waste of valuable ore 
that takes place in some quarries with the present methods of work. 
And to show that in some countries it is thought worth while to em- 
ploy more elaborate methods in mining the ores, to win lower grade 
ores than are considered worth notice in India, and, ii necessary, to 
subject the ore when won to some sort of mechanical concentration, 
a short account is given of methods in vogue in Brazil, Virginia, 
Pacama, and other countries. 
[CHAPTER XXVIII.] 
The Uses of Manganese. 
An attempt is made in this chapter to bring together such facts 
as are available concerning the manufacture of spiegel-eisen and ferro- 
manganese, the literature of which is very scanty and scattered. It is 
