Volts per cm. Volts per 
S 
o 
Negative Faraday Dark Space. Stria. Stria. 
Glow. 
Diagkam No. 3. Discharge in Air. Pressure 0-3 mm. Magnetic Field 29*4. 
Diagram No. 4. Discharge in Air. Pressure 0-11 mm. Magnetic Field 22*8. 
