A new carbon filament

I have the pleasure of presenting to you some data on a new carbon filament, which has characteristics so differing from those of any previously known filament as to seem to indicate that it is a new form of carbon. Beside being very interesting on account of its physical characteristics, this filament is of considerable value on account of its much better life or efficiency, as compared with the carbon filaments heretofore known. This new filament is the result of work done in the Research Laboratory of the General Electric Company, and in the laboratory of the Lamp Works, at Harrison, N. J.