ABSTRACT
This chapter describes some experiments which show that the rays are deviable by a strong magnetic and electric field. The deviation is in the opposite sense to that of the cathode rays, so that the radiations must consist of positively charged bodies projected with great velocity. The general method employed was to pass the rays through narrow slits and to observe whether the rate of discharge, due to the issuing rays, was altered by the application of a magnetic field. The gold-leaf system was insulated inside the vessel by a sulphur beadC, and could be charged by means of a movable wireD, which was afterwards earthed. The presence in the testing vessel of a small amount of the emanation, which is always given out by radium, would produce large ionization effects and completely mask the effect to be observed.
