Calendar: 1878-1879 Page 327

EVENING CLASSES 325 IV Atmospheric Electricity Electric Clouds Light- ning Physiological and other effects of Statical Electricity Electrometers The Natural Magnet or Loadstone Artificial Mag- nets Polarity Action of opposite Poles on one another Magnetic Induction VI Terrestrial Magnetism Magnetic Declination and Dip and their Variations Magnetic Intensity VI Law of Magnetic Attractions and Repulsions Dis tribution of Magnetism in Magnets Methods of making Artificial Magnets Effect of Heat on Magnets Armatures VIII Currents of Electricity Measurement of the Quan- tity of Electricity in Current Effect of Current on the Magnetic Needle the Galvanometer Thomson's Reflecting galvanometer IX Electro-motive Force Experiments of Galvani and Volta The Voltaic Pile Dry Piles Production of Electricity by Heat Thermo-Eiectric Piles Voltaic Batteries Wollaston's Battery Circuits with one Metal and two Liquids Weakening of the Current Secondary Currents Tension of Current XI Gas Batteries Batteries with Constant Current Smee's Daniel's Grove's and Bunsen's Batteries Ohm's Laws of the Intensity of Currents XII Chemical Effects Decomposition of Salts Electro- plating the Voltameter Thermal and Luminous Effects of Currents The Electric Light XIII Attractions and Repulsions of Currents by Currents Action of the Earth and of Magnets on Currents Reciprocal Action between Currents and Magnets Magnetisation by Currents