ABSTRACT
This chapter deals with further experiments which have been made to investigate more fully the way in which electrified gases can be obtained by means of the Rontgen rays, and also to examine the properties of the charged gas. If the central electrode through which the air was blown was coated with paraffin or sealing-wax, it was found that the amount of electrification obtained was at first about equal to the amount with the bare electrode. The conductivity of the charged gas was tested by placing an insulated wire kept at a constant potential inside a metal vessel through which the electrified gas was blown. It was found that when the electrification was of the same sign as the charged wire, the gas gave up its charge to the outside vessel, and when of the opposite sign, to the charged wire.
