Propelled electrically from one side to the other.
The electrical phenomena show that there are two ions to the molecule, and that these ions are electrically charged.
There is a good system of electrically worked tramways, 52 m.
The class of furnaces heated by electrically incandescent materials has been divided by Borchers into two groups: (I) those in which the substance is heated by contact form at least so much carbide as would suffice, when diffused through the metal, to render it brittle, practically restricts the use of such processes to the production of aluminium alloys.
He draws a distinction between the lines of the trunk series to which he assigns neutral, and the lines of carriers the two branch series of which are electrically charged.