520
PROF. JACOBI ON THE APPLICATION OF ELECTRO-MAGNETISM
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— Series I.
Tin.
Alloy of lead with tin. (Pl. Sn.)
Lead.
Tin amalgamated.
Lead amalgamated.
Amalgam of tin. (Sn. Hg.)
Alloy of zinc with tin, (Zn. Sn.)
Amalgam of lead. (Pl. Hg.)
Alloy of zinc with tin and lead. (Zn. Sn. Pl.)
Alloy of zinc with lead. (Zn. Pl.)
Alloy of tin with lead amalgamated.
Zinc.
Alloy of zinc with tin amalgamated.
Alloy of zinc with lead amalgamated.
Alloy of zinc, tin, and lead amalgamated.
Zinc amalgamated.
Amalgam of zinc. (Zn. Hg.)
Amalgam of an alloy of tin and lead. (Zn. Pl. Hg.)
Amalgam of an alloy of tin and zinc. (Sn. Zn. Hg.)
Amalgam of an alloy of tin, zinc, and lead. (Sn. Zn. Pl. Hg.)
Amalgam of an alloy of zinc and lead. (Zn. Pl. Hg.)
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— Series II.
Tin.
Lead.
Tin amalgamated.
Amalgam of an alloy of tin with lead.
Alloy of lead with tin.
Lead amalgamated.
Amalgam of tin.
Alloy of zinc with tin.
Amalgam of lead.
Tin with lead amalgamated.
Alloy of zinc, tin, and lead.
Alloy of zinc and lead.
Zinc.
Zinc amalgamated.
Alloy of zinc, tin, and lead amalgamated.
Alloy of zinc and lead amalgamated.
Amalgam of zinc.
Amalgam of an alloy of tin and zinc.
Amalgam of an alloy of tin, zinc, and lead.
Amalgam of an alloy of zinc with lead.
Alloy of zinc with tin amalgamated.
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We see by the above that the alloys, and principally the amalgams, are always positive with relation to the simple metals. Most of the amalgams, excepting those of tin and lead, may be used in plates. As to the chemical action upon these various compositions, it did not take place in the amalgamated zinc and the amalgam of zinc, any more than in any of the alloys and amalgams of tin and lead; but in all the other compositions of zinc the disengagement of gas was very brisk. In the first series, the amalgam of an alloy of tin and lead occupies a very positive place, but the hope of profiting by this is negatived by the second series. In employing the amalgamated plates or the amalgams of zinc, there occur various circumstances the cause of which I have not yet been able to discover. During the voltaic action particles of amalgam are often detached in the form of flakes, which float on the liquid, and are deposited on the copper or on the negative plates, so that these become by
