Berzelius, Jöns Jakob, Essai sur la théorie des proportions chimiques et sur l' influence chimique de l' électricité

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              <pb o="33" file="0053" n="53" rhead="DES PROPORTIONS CHIMIQUES."/>
            les exemples de doubles silicates, dans la table
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            de la composition des corps inorganiques. </s>
            <s xml:id="echoid-s388" xml:space="preserve">Parmi
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            les produits artificiels de la chimie que j’ai eu
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            occasion d’examiner, et à l’égard desquels je n’ai
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            sujet de soupçonner aucune faute d’observation
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            de ma part, je n’ai trouvé qu’un sel, avec excès de
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            base, de baryte et d’acide phosphorique, ainsi que
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            deux sels, l’un avec excès d’acide, et l’autre avec
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            excès de base, d’acide phosphorique et de chaux,
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            qui paraissent être de la même nature. </s>
            <s xml:id="echoid-s389" xml:space="preserve">Il reste en-
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            core à examiner si d’autres proportions, incon-
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            nues jusqu’à présent, peuvent également avoir
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            lieu; </s>
            <s xml:id="echoid-s390" xml:space="preserve">elles dépendront dans ce cas d’affinités si fai-
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            bles, que nous ne pouvons guère les observer dans
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            les opérations de nos laboratoires, où l’emploi
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            de plus grandes forces détruit leurs effets.</s>
            <s xml:id="echoid-s391" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s392" xml:space="preserve">Mais, plus nous étendons la possibilité de
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            ces combinaisons, et plus leur produit s’é-
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            carte de ce que l’expérience nous a appris jus-
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            qu’ici par rapport aux proportions chimiques
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            dans la nature inorganique; </s>
            <s xml:id="echoid-s393" xml:space="preserve">ce qui combat la
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            probabilité qu’il existe de semblables combi-
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            naisons.</s>
            <s xml:id="echoid-s394" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s395" xml:space="preserve">Il suit de là que “les proportions dans les-
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            quelles les atomes simples se combinent dans
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            la nature inorganique, sont très-limitées, et
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            que la proportion que nous trouvons le plus
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            généralement dans nos expériences de labora-
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            toire, est celle d’un atome d’un élément </s>
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