VOMITING

@ graduated scale. There are four types in general use, of which one, the electrostatic, is the only direct pre ure indicator. The insulated pieces of metal become oppositely electrified by the electric force between them, and hence attract each other, the force of attraction giving a measure of the E.M.F. (See ELECTROMETER.) These can be used equally well for continuous and for alternating pre ures, and are specially suitable for high pre ures, as they consume no current. They are free from temperature errors, and are quite independent of magnetic influence. The other types depend on Ohm’s law. See ELxgcrnricity. town, Liguria, Italy; iron, shipbuilding, paper, cotton. Pop. 15,200. (ancient Vulturn us), river, Italy; enters Mediterranean; length, 10 miles.