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Updated: May 17, 2025
My observation leads me to the contrary, that the higher the temperature the more rapid the breathing to get clear of the excess of carbon, and hence more oxygenation of the blood which will arterialize the venous blood, unless there is a large amount of carbonized matter from the tissues to be taken up.
This cooling is rendered necessary, because without it the oil would be carbonized, and lubrication of the cylinder rendered impossible. Indeed, a similar difficulty has occurred with all hot-air engines, and is, I think, the reason they have not been more generally adopted.
He tells us that he never came upon the slightest trace of a vault, while in almost every room that he excavated he found wood ashes and carbonized timber. He is convinced that the destruction of several of these buildings was due in the first instance to fire. Several pieces of sculpture, those from the palace of Sennacherib, for instance, may be quoted, which when found were black with soot.
In fact, according to Mr. Carnot, the plants already cited furnish the following results on distillation: These differences in the proportions of volatile substances, of fixed residua, and of density in the coke obtained seem to be in harmony with the primitive organic nature of the carbonized tissues.
Bar-steel is manufactured by heating the iron, divided into lumps, in pots, with layers of charcoal, closely covered over with sand and clay, for several days. By this means the iron is carbonized and converted into what is commonly called blistered steel. The heat is kept up a longer or shorter time according to the hardness required.
The vast quantity of this unworked fuel would be sufficient to warm the whole population of Iceland for a century; this vast turbary measured in certain ravines had in many places a depth of seventy feet, and presented layers of carbonized remains of vegetation alternating with thinner layers of tufaceous pumice.
The heating apparatus is a hot air stove provided with a system of piping. The rags to be carbonized or the wool to be dried are placed upon wire cloth frames.
My dreams for the most part fade away so soon after their occurrence that I cannot recall them at all. But in this case my ideas held together with remarkable tenacity. By keeping my mind steadily upon the work, I gradually unfolded the narrative which follows, as the famous Italian antiquary opened one of those fragile carbonized manuscripts found in the ruins of Herculaneum or Pompeii.
But there is a common term by which we can express more accurately the misfortune which has befallen all these various things slices of bread, mutton-chops, apples, cakes, chestnuts, potatoes, and what-not, when "burnt," "over-toasted," "over-roasted," or "over-baked." We may call them carbonized, or more simply charred or charcoaled; though the word charred is generally used only for burnt wood.
But carbon being the principal ingredient of charcoal, and charcoal being one of the purer forms in which we get at carbon, they are almost synonymous terms, and you may call your burnt food carbonized, or charred, or charcoaled, whichever you prefer. The next question is, how did charcoal or carbon get into the food so as to justify our talking of its being carbonized or charred?
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