The Richmond and Louisville medical journal . nce of platinum as a conductor that causes it to heat. Polarization, also, I have obviated, by perforating the zincplates, and by the very simple device of placing agitators be-tween the negative and positive plates, whereby the hydrogenbubbles and sesquioxide of chromium are removed with facility. The battery, therefore, which I have devised seems to me,after prolonged trial, to meet all the requirements of a perfectgalvano-caustic battery, and for compactness, durability, power,and cheapness, equals, if it does not surpass, any heretoforeoffered.
The Richmond and Louisville medical journal . nce of platinum as a conductor that causes it to heat. Polarization, also, I have obviated, by perforating the zincplates, and by the very simple device of placing agitators be-tween the negative and positive plates, whereby the hydrogenbubbles and sesquioxide of chromium are removed with facility. The battery, therefore, which I have devised seems to me,after prolonged trial, to meet all the requirements of a perfectgalvano-caustic battery, and for compactness, durability, power,and cheapness, equals, if it does not surpass, any heretoforeoffered. The battery shown in the accompanying illustration is com-posed of but two cells, made of hard rubber, in each of whichare two positive (zincs) and one negative (platinum) plate,all measuring but four and a half by six inches. The zincs GALVANO-CAUSTIC SURGERY. 39 (A) are perforated by a number of small holes, and are ad-justed half an inch apart, between them the platinum platesbeing adjusted, the lead borders showing at B. On each side of. the platinum plate in each cell are rubber-covered metal pumpsor agitators (C), worked by means of a small knob. D and Eare the connecting screws. The entire battery requires but alittle over a quart of fluid to exert its fullest power, with whichamount it will keep up a most powerful action, long enough forthe most prolonged operation, by moving up and down slowlythe pumps or agitators (C). By this action, the old or ex-hausted fluid between the plates is thrown out through the per-forations, and the outside fresh fluid takes its place, and bythis polarization is wholly overcome, and, according to thedegree of heat required, the pumps are worked more or lessfast. In fact, this device develops so much power that it ispossible to melt platinum instruments which other batteriesonly heat to a red heat. 40 GALVANOCAUSTICT SURGERY. In using this battery, the following must be carefully ob-served : Fill each cell with acid to within one and thre
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Keywords: ., bookcentury180, bookdecade1870, booksubjectmedicine, bookyear1876
