Part,  Chapter

1 1,7|   principally of coal, flint, alumina, and sulphuret of iron-the
2 1,7|      sulphate of iron and the alumina into sulphate of alumina,
3 1,7|      alumina into sulphate of alumina, two equally soluble substances,
4 1,7| sulphate of iron, sulphate of alumina, flint, remains of coal,
5 1,7|       of iron and sulphate of alumina, the other matters remaining
6 1,7|     contained the sulphate of alumina, was thrown away. ~Cyrus