Catalogue of surgeons instruments and medical appliancesElectro-therapeutic apparatusSundries for the surgery and sick-room, medicine chests, etc . in Mahogany Case, with Two Rheophores, Metallic Brush, Handles, and Conducting Cords (Fig. 816). £15 0Smaller Size, one compartment only, no Rheophores. 110 Constant=Current Fig. 817. Dr. Stoehrers Batteries (Fig. 817)— In Polished Oak Case, with Glass Cells, SledgeCollector, Current Rtverser, and four Electrodes. 20 cells £5 10 ? 3° ji • • 7 10 O 206 James Woolley, Sons & Co., Ltd., Manchester. Constant Current Batteries—Continued. Dry

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Catalogue of surgeons instruments and medical appliancesElectro-therapeutic apparatusSundries for the surgery and sick-room, medicine chests, etc . in Mahogany Case, with Two Rheophores, Metallic Brush, Handles, and Conducting Cords (Fig. 816). £15 0Smaller Size, one compartment only, no Rheophores. 110 Constant=Current Fig. 817. Dr. Stoehrers Batteries (Fig. 817)— In Polished Oak Case, with Glass Cells, SledgeCollector, Current Rtverser, and four Electrodes. 20 cells £5 10 ? 3° ji • • 7 10 O 206 James Woolley, Sons & Co., Ltd., Manchester. Constant Current Batteries—Continued. Dry Cells have been much improved recently, and as they can berelied upon, they present many striking advantages over the older formsof Batteries, such as small Wet Leclanche or Bichromate Cells. and internal resistance are well suited for the application ofcontinuous currents through the resistance of the body; they requireno attention or charging, and can very easily be replaced singly whenexhausted. Dry Cell Batteries—

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Keywords: ., boo, bookcentury1800, booksubjectsurgicalinstrumentsandapparatus