. The electro-therapeutics of gynaecology . one direction from the higher tothe lower potential. Circulation of the Current of a (xalvanic Cell.— — 23 The current starts from the zinc (positive) elementwhere the chemical action takes place, passing throughthe intervening fluid to the carbon (negative) ele-ment, and out of the cell through this element as a Fig. 4.—Cut showing Circulation ofTHE Current. conducting medium, thence along a wire or otherconductor, back to the zinc element, whence itstarted. The current as it circulates inside ofthe cell, ^. e., from the positive to the negativeelem
. The electro-therapeutics of gynaecology . one direction from the higher tothe lower potential. Circulation of the Current of a (xalvanic Cell.— — 23 The current starts from the zinc (positive) elementwhere the chemical action takes place, passing throughthe intervening fluid to the carbon (negative) ele-ment, and out of the cell through this element as a Fig. 4.—Cut showing Circulation ofTHE Current. conducting medium, thence along a wire or otherconductor, back to the zinc element, whence itstarted. The current as it circulates inside ofthe cell, ^. e., from the positive to the negativeelement is designated the internal circuit of thebattery, and that circulating between these elementsor the poles outside of the battery is the external cir- — 24 — cuit. The point where the current emerges from thecell, i. 6., at the carbon, though it is the negative ele-ment, is called the positive pole of the battery, andwhere the positive pole re-enters the cell at the zinc isthe negative pole. Therefore the carbon, which is the. Fig. 5. -Illustrates the Circulation of the Current When SeveralCells are Connected in Series. negative element in the cell, is the positive pole of thebattery, and the zinc which is the positive element isthe negative pole. There need be no confusion onthis point. Tarieties of Galvanic Cells.—It will be unneces-sary to describe all the varieties of cells in a workof this kind, and the reader is referred to generalworks on electricity for information of this char-acter. The principal cells in general use to-day are — 25 — some one of the forms of Leclanche cell, and thered acid (Grenet) cell. The Leclanch^ cell, which isthe only reliable cell suitable for gynaecological pur-poses, consists of a glass jar half filled with a satu-rated solution of muriate of ammonia (sal ammoniac,which should be pure), in which is placed a rod ofzinc and a porous cup containing gas carbon, and di-oxide of manganese to retard polarization. The ele-ments ar
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectgynecology, bookyear1
