  - A
- Acid, Chromic, 189.
- " Sulphuric, 212.
- Air pump, Geissler, 142.
- " " Simple, 141.
- " " Sprengel, 143.
- " blast, 76.
- " wire, 262.
- Amalgamation, 180.
- Assembly of coil, 22.
- Attraction, Window, 154, 163.
- Automobile coil, 40.
- Automatic burners, 170.
- Automatic burners, Adjustment, 176.
- B
- Ballistic galvanometer, 99.
- Barium platino cyanide, 238.
- Base for coil, 30.
- Bath coil, 61.
- Battery, Bichromate, 180.
- " Champion, 179.
- " Daniell, 191.
- " Dun, 187.
- " Edison-Lalande, 195.
- " Fuller, 184.
- " Gas-lighting, 179.
- " Gethins, 193.
- " Gordon, 194.
- " Gravity, 191.
- " Grenet, 180.
- " Harrison, 219.
- " Monarch, 179.
- " Morisot, 188.
- " Novelty, 182.
- " Open circuit, 178.
- " Polarization, 179.
- " Samson, 179.
- " solutions, 185, 188, 189.
- " Standard dry, 196.
- " Storage, 200.
- " Storage, to charge, 208.
- " Storage, to make, 101.
- " Storage, to seal, 215.
- " U. S. storage, 218.
- Beeswax, 95.
- Brush, Electric, 128.
- C
- Capacity of condenser, 100.
- Carbons for battery, 182.
- Cements, 97.
- Charging condenser, 110.
- Chromic acid, 189.
- Closed magnetic circuit, 6.
- Coherer, Aluminium, 242.
- " Choice of, 243.
- " Contact breaker, 81.
- " To procure, 141.
- " pumps, 140.
- W
- Water, Decomposition of, 44.
- Wax, 95.
- Wehnelt interrupter, 77.
- Wheel, Rotating, 154.
- Winder, Coil, 16.
- Winding coils, 20.
- " Secondary, 10, 14.
- " Sectional, 11.
- Wire for secondary coil, 24.
- " " primary coil, 9.
- Wires, Air, 262.
- Wireless telegraphy, 248.
- Wireless telegraphy circuit, 250.
- X
- X-Ray apparatus, 236.
- " Remarks, 243.
- " photographs, 246.
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