[5] This marked the time when the oxides first settled, leaving a colorless supernatant liquid.
[6] This marked the time when the solution was first decolorized.
[7] Allen’s thesis.
[8] Silliman’s Am. J. Science (2) 44.216
[9] J. für Prak. Ch. (2) 23, 324-379.
[10] Decolorized before time was taken.
Transcriber’s Notes:
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