The achievements of several other inventors in the electrical field have been only less noteworthy than his.

The new profession of electrical engineering called to its service great numbers of able men.

Manufacturers of electrical machinery established research departments and employed inventors.

The times had indeed changed since the day when Morse, as a student at Yale College, chose art instead of electricity as his calling, because electricity afforded him no means of livelihood.
From Edison's plant in 1903 came a new type of the storage battery, which he afterwards improved.

The storage battery, as every one knows, is used in the propulsion of electric vehicles and boats, in the operation of block-signals, in the lighting of trains, and in the ignition and starting of gasoline engines.