SYNOPSIS OF PART HI- 
xcvii 
shown that the difference between the cost of the materials that would 
be required to manufacture ferro-manganese in India, and the price 
the alloy produced would fetch on the European and American markets 
is so large that it is improbable that the other items in the manufac- 
ture of this alloy besides the cost of materials — and concerning which 
no figures are available — would account for the whole of this difference ; 
and in fact that it is not improbable that considerable profit would 
attach to the manufacture of ferro-manganese in India, once a market 
for it had been obtained. 
Accounts are also given of the use of manganese-ore in India in 
native iron-smelting, in colouring glass and enamels, and for pottery, 
and of the use and valuation of peroxide ores as a source of oxygen. 
