oxygen reduced.
------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
oxygen reduced. | 6.93| 4.02| 1.07|24.03|10.02| 2.18| 0.49|16.44| 1.49| 0.42
------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+

Degree of Oxidation of the Ore after the Experiment.
------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
FeO. | ... | ... | ... |84.66| ... | ... | ... |18.40| ... | ... |
Fe_{3}O_{4}. |52.20|30.61| 4.84|37.82|77.01|28.12| 3.88|62.72|11.14| 4.64|
Fe_{2}O_{3}. |32.55|55.36|81.47| ... | 8.49|59.77|77.75| ... |71.23|74.54|
Total. |84.75|85.97|85.97|85.97|85.97|85.97|85.97|85.97|85.97|85.97|
------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+

------------------+-----------------+-----------------------+-----------------+
The ore having | | | |
been exposed to | Steam. | Water gas. | Carbon monoxide.|
------------------+-----------------+-----------------------+-----------------+

_Four Samples were Tested_.--I. The bottom layer, 11/4 in. thick; the
color of ore quite black, with small particles of reduced spongy
metallic iron. II. Layer above I., 41/4 in. thick; the color was also
black, but showed a little purple tint. III. Layer above II., 5 in.
thick; purple red color. IV. Layer above III., ore a red color. The
analyses gave:

-----------------------------+---------+---------+---------+---------
| I. | II. | III. | IV.
+---------+---------+---------+---------
|per cent.|per cent.|per cent.|per cent.
Ferric oxide (Fe_{2}O_{3}). | 26.08 | 61.60 | 82.71 | 80.55
Ferrous oxide (FeO). | 60.40 | 23.90 | 5.18 | 1.08
+---------+---------+---------+---------
Total. | 86.48 | 85.50 | 87.89 | 81.63
+---------+---------+---------+---------
Calculated: | | | |
Ferric oxide (Fe_{2}O_{3}). | ... | 8.49 | 59.77 | 77.75
Magnetic oxide (Fe_{3}O_{4}).| 37.82 | 77.01 | 28.12 | 3.88
Ferrous oxide (FeO). | 48.66 | | |
+---------+---------+---------+---------
Total. | 86.48 | 85