Within two years from the opening of the station the demand for service had so increased that over one hundred applications were filed in excess of what could be accepted, because the plant was taxed already to its utmost capacity. Allusion has already been made to the auxiliary plant at Liberty Street, a station of 2,000 lights'capacity which was instituted in 1886. By 1887, not only a second but a third district had been mapped out, the whole extending from Eighteenth to Forty-fifth Street. All the underground system in the two new districts was laid according to Edison's new three-wire patent; and it was presently announced that customers would be supplied with power as well as with light.

Electric Delivery Wagons Loading Edison Lamps.

Six months after the disastrous fire of 1890, in which the Pearl Street station was burned, the site was chosen for the Edison Duane Street building on which operations were so hastened that machines were installed and current turned on the first of May the following year.