Nitrogen and Tesla Currents

KAUFFMANN and HELL. — An account of an experiment in which nitrogen was exposed to the influence of Tesla currents. The nitrogen is contained in a wide glass tube, in which there is a narrow tube filled with mercury connected to one pole of a Tesla coil, while the other pole is connected to an external tin coating on the wider glass tube. On working the Tesla coil, a blue fluted light appears in the wide tube, accompanied by a green fluorescence of the glass walls. The green fluorescence appears to be generated wherever the blue rays impinge upon the glass, just as if these were cathode rays. — Phys. Zeit., May 11; abstracted in Lond. Elec., May 24.