supercarburetted

Some experiments made at Mexico, conjointly with Senor del Rio, led me to think that the rocks of Atures, which blacken the paper in which they are wrapped, * contain, besides oxide of manganese, carbon, and supercarburetted iron.

Travels to the Equinoctial Regions of America 1851

Senor del Rio, led me to think that the rocks of Atures, which blacken the paper in which they are wrapped, * contain, besides oxide of manganese, carbon, and supercarburetted iron.

Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Alexander von Humboldt 1814

Having been wrapped up in white paper during a journey of several months, they left a black stain, like that of plumbago or supercarburetted iron.]

Travels to the Equinoctial Regions of America 1851

Having been wrapped up in white paper during a journey of several months, they left a black stain, like that of plumbago or supercarburetted iron.)

Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Alexander von Humboldt 1814