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Updated: May 10, 2025
It is certain that it is a kind of cellulose, but still not identical with true cellulose. All animal fibres, when burnt, emit a peculiar empyreumatic odour resembling that from burnt feathers, an odour which no vegetable fibre under like circumstances emits. Hence a good test is to burn a piece of the fibre in a lamp flame, and notice the odour.
Placed on the fire in large earthen pots, it was simply subjected to evaporation, and soon a scum arose to its surface. As soon as this began to thicken, Neb carefully removed it with a wooden spatula; this accelerated the evaporation, and at the same time prevented it from contracting an empyreumatic flavor.
But this empyreumatic oil consists of two substances; for, if it be washed with acetic acid, it loses its poisonous quality. It contains, therefore, a harmless oil, and a poisonous alkaline substance, which the acetic acid combines with and removes. It has been shown to contain the alkaloid nicotia, and this is probably its only active component.
L. D. Tar, which is well known from its oeconomical uses, is properly an empyreumatic oil of turpentine, and has been much used as a medicine, both internally and externally.
They are two in number, a volatile alkali, and a volatile oil, called nicotin and nicotianin, respectively. A third powerful constituent is developed by combustion, which is named the empyreumatic oil. Starch, gum, albumen, resin, lignin, extractive, and organic acids exist in tobacco, as they do, in varying proportions, in other plants.
The hair of the front and of all parts of the head is of the same length, and when loose hangs together behind, with most of the women, in very great quantity. It is kept moist with oil newly expressed from the coconut; but those persons who can afford it make use also of an empyreumatic oil extracted from gum benzoin, as a grateful perfume.
Alcohol derived from the fermentation of grain, sugar, and of all starchy matters in general, contains an innumerable host of different products, which may be grouped under four principal heads: 1. Empyreumatic essential oils, characteristic of the source of the alcohol, and having a powerful odor which infects the total mass of the crude spirits. 2. A considerable quantity of water. 3.
The black used on these occasions is the empyreumatic oil of the coconut-shell. When this is not applied the filing does not, by destroying what we term the enamel, diminish the whiteness of the teeth; but the use of betel renders them black if pains be not taken to prevent it.
For while Hermstadt swallowed a grain of nicotianin with impunity, the vapor of pure nicotin is so irritating that it is difficult to breathe in a room in which a single drop has been evaporated. When distilled in a retort, at a temperature above that of boiling water, or burned, as we burn it in a pipe, tobacco affords its third poison, the empyreumatic oil.
A strong, empyreumatic, thick smoke ascended from the hatchway of the cabin, and, as it had now fallen calm, it mounted straight up the air in a dense column. I attempted to go in, but so soon as I encountered the smoke I found that it was impossible; it would have suffocated me in half a minute.
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