III. ELECTRICITY, MAGNETISM, ETC.--Electric Launches.--A
paper read before the Society of Arts by A. RECKENZAUN, and
discussion on the same.--Advantages of electromotive power.--
Cost of same.--Experimental electric launches
First Experiments with the Electric Light.--Sir Humphry
Davy's experiments in 1813,--With two engravings
Electrical Grapnel for Submarine Cables and Torpedo Lines.--
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