The lime was converted, by means of sulphuric acid, into gypsum, and thus severed from its associate. The relative proportions of the ingredients are as follows.
Silica | 62. | 2 |
Lime | 14. | 1 |
Magnesia | 12. | 9 |
Oxide of Iron | 5. | 9 |
Water | 1. | |
Of Manganese and Soda, a trace | ||
loss | 3. | 9 |
───── | ||
100. | 0 |