examples of this kind of combinations by means of which chiefly she is enabled

Examples of this kind of combinations by means of

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examples of this kind of combinations, by means of which, chiefly, she is enabled to produce a vast variety of compounds from a very limited number of elements, or simple substances. It was long ago well known, that, when muriatic and nitric acids were mixed together, a compound acid was formed, having properties quite distinct from those of either of the acids taken separately. This acid was called aqua regia , from its most celebrated property of dissolving gold, called king of metals by the alchymists. Mr Berthollet has distinctly proved that the peculiar properties of this acid arise from the combined action of its two acidifiable bases; and for this reason we have judged it necessary to distinguish it by an appropriate name: That of nitro­muriatic acid appears extremely applicable, from its expressing the nature of the two substances which enter into its composition. This phenomenon of a double base in one acid, which had formerly been observed only in the nitro­muriatic acid, occurs continually in the vegetable kingdom, in which a simple acid, or one possessed of a single acidifiable base, is very rarely found. Almost all the acids procurable from this kingdom have bases composed of charcoal and hydrogen, or of charcoal, hydrogen, and phosphorus, combined with more or less oxygen. All these
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