The Dental record . Fig. 9. Fi^. 10. orm of a bottle, and consists of two carbon plates and one zinc. Thecarbons are fixed to a wooden or ebonite cover, and remain perma-nently in the liquid. The zinc plate is attached to a sliding rod,movable in a split brass tube fastened to the cover, by means ofwhich the zinc may be raised from the liquid and the battery thrownout of action, thus waste of the zinc and the solution is exciting fluid consists of bichromate of potash, 2 J parts dissolvedin 20 parts of water, to which is added one part of sulphuric acid ; orone part of Voisins ch
The Dental record . Fig. 9. Fi^. 10. orm of a bottle, and consists of two carbon plates and one zinc. Thecarbons are fixed to a wooden or ebonite cover, and remain perma-nently in the liquid. The zinc plate is attached to a sliding rod,movable in a split brass tube fastened to the cover, by means ofwhich the zinc may be raised from the liquid and the battery thrownout of action, thus waste of the zinc and the solution is exciting fluid consists of bichromate of potash, 2 J parts dissolvedin 20 parts of water, to which is added one part of sulphuric acid ; orone part of Voisins chromic salt to five parts of water may be usedinstead of the former. This battery gives a powerful current for ashort time, about fifteen minutes for a pint size cell, but it rapidlypolarises. Grenet has introduced another form of this battery in which thesame arrangement is retained, but he has added two glass tubes whichextend through the cover to the bottom of the bottle, these are con-nected by a piece of gutta p
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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondon, bookyear188
