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A gaseous compound of hydrogen and nitrogen, NH3, with a pungent smell and taste: Ð often called volatile alkali, and spirits of hartshorn.

On first approaching the table that had hitherto befriended her, she perceived on it a large vial of spirits of hartshorn: this she had taken possession of, and held firmly in her hand; and at the moment that Corbold bent his audacious head to kiss her, she discharged the whole contents upon his eyes and face, occasioning a degree of blindness and suffocation, that for the moment totally disabled him.

Bees, or snakes, may be relieved by immediate external application of strong spirits of hartshorn: salt and vinegar are also good.

Take a mixture of one ounce sweet oil, four ounces spirits of hartshorn, half an ounce oil of thyme, and rub with it frequently.

It is used for many purposes, both in medicine and scientific chemistry; not, however, in the gaseous state, but frequently in solution in water, under the names of liquid ammonia, aqueous ammonia, or spirits of hartshorn.