Spirits of Hartshorn

Spirits of Hartshorn was a name signifying originally the ammoniacal liquor obtained by the distillation of horn shavings, afterwards applied to the partially purified similar products of the action of heat on nitrogenous animal matter generally, and now popularly used to designate the aqueous solution of ammonia.

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This article incorporates text from the Encyclopædia Britannica Eleventh Edition, a publication now in the public domain.