. Practical electricity in medicine and surgery. w Fig. 195.— Method of Connectingmilliamperemeter to portableBattery. 236 PRACTICAL ELECTRICITY IN MEDICINE AND SURGERY. begins, which soon itself adds to the resistance by coating oneof the contact points with hydrogen gas. A more recent form of the water rheostat is the BailyCurrent Regulator (Fig. 197), manufactured by the Law BatteryCompany, of New York. The place of the rod of metal in theordinary water rheostat is taken in this instrument by four carbonplates tapering to a point. Thecurrent can be very graduallyincreased or decreased with
. Practical electricity in medicine and surgery. w Fig. 195.— Method of Connectingmilliamperemeter to portableBattery. 236 PRACTICAL ELECTRICITY IN MEDICINE AND SURGERY. begins, which soon itself adds to the resistance by coating oneof the contact points with hydrogen gas. A more recent form of the water rheostat is the BailyCurrent Regulator (Fig. 197), manufactured by the Law BatteryCompany, of New York. The place of the rod of metal in theordinary water rheostat is taken in this instrument by four carbonplates tapering to a point. Thecurrent can be very graduallyincreased or decreased with thisrheostat. Among other formshighly recommended are thegraphite rheostat of Dr. Gartner,of Vienna, and a modification ofthis instrument by Dr. G. BettonMassey, and figured in his book.*.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectelectri, bookyear1890
