An international system of electro-therapeutics : for students, general practitioners, and specialists . ^, form of battery employed was ELECTRO-THERMAL SURGERY. L-7 that of Grove & Bunsen, either of which, however, though amply power-ful, presented so many objectionable features that they soon gave placeto the more simple form of single-fluid battery as devised by Wollastonshortly after the introduction of Yoltas pile. This change was firstrendered possible through the adoption of carbon as a negative elementinstead of copper or silver, both of which would be acted upon by thestronger acid so
An international system of electro-therapeutics : for students, general practitioners, and specialists . ^, form of battery employed was ELECTRO-THERMAL SURGERY. L-7 that of Grove & Bunsen, either of which, however, though amply power-ful, presented so many objectionable features that they soon gave placeto the more simple form of single-fluid battery as devised by Wollastonshortly after the introduction of Yoltas pile. This change was firstrendered possible through the adoption of carbon as a negative elementinstead of copper or silver, both of which would be acted upon by thestronger acid solutions, and especially by those containing bichromateof potash. All batteries, therefore, up to 1875, constructed for cauteri-. FiG. 5.—Cautery Battery. (Waite & Bartlett Mfg. Uo.) A A, conducting cords; B. pneumatic agitator; C, suspension rod and connecting set-screw combined ; a a, poles of battery; b b. Bet-screws to couple for quantity ; e e, air-tubes. zation, contained plates of carbon and zinc, which were found, whenimmersed in bichromate solutions, to generate an electro-motiveforce almost equal to either of the two first named. Soon afterthe discovery of a metallic negative conductor (1876), designed totake the place of carbon in single-fluid batteries, it was proposed tosubstitute a sheet of platinum instead of carbon, and to overcome thediflSiculty of polarization by a mechanical device for removing nascenthydrogen from the platinum surface. Two forms of apparatus con- L-8 BYRNE. structed in this manner are already familiar to many, and are known asthe Dawson and Piffard batteries. So far as a means provided for keep-ing the negative surfaces free, nothing better could be desired ; and asa hi
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectuterus, bookyear1894
