Mr. Tesla's New Circuit Controller

Unusual interest attends all of the work of Mr. Nikola Tesla, but more particularly that in connection with his system of vacuum tube lighting. On another page we present a description of an electric circuit controller, one form of a series of developments in this line for which patents were recently issued to him, several of which were previously noted in the Electrical Review. This invention seems to us to possess mechanical efficiency of a high order, and, like the author's work in general, marks an advanced step, and will undoubtedly possess a wide field of usefulness.