142 
ME. C. E. S. PHILLIPS ON THE ACTION OF MAGNETISED ELECTRODES 
The iron electrodes, E^,, in this case no longer used as such, but merely as 
prolongations of the electro-magnet cores, were screwed towards each other through 
the brass framework W W, adjusted to have their pointed ends 2 mm. apart, and 
arranged centrally within the glass tube and aluminium cylinder just described. 
The results obtained at the correct gas pressure with this apparatus were as 
follows ;—A was positively electrified while the gold leaves of an electroscope were 
connected with it. To was joined to the case of the electroscope. When Ej and Eo 
v^ere oppositely magnetised the leaves collapsed, sliowing A to have lost its charge. 
()n the other hand, when A was negatively electrified no appreciable change occurred 
in the amount of the charge upon it, through the action of the magnetic field. 
Neither was there diselectrification of A, even if it were charged positively when the 
magnets had similar poles at the })ointed ends. 
[I find that Professor E, Warburg has already drawn attention to this eftect, and 
in I89G puljlished some results, with which my own observations are in complete 
agreement. (See ‘ Sitzungsber d. k. pr. Akad. d. Wissensch. zu Berlin,’ p. 228, 1896, 
and ‘ Annalen der Physik,’ N. F., 62, p. 885).]— July 1, 1901. 
Tlie alnminium cylinder C was next positively electrified, and the connection with 
the electroscope transferred from A to C. In this experiment A was connected to the 
case of the electroscope, and no change occurred in tlie electrification of the cylinder 
either on creating or destroying the magnetic field. The leaves of a second electro¬ 
scope were then connected to A, as in the first case, while the other electroscope 
remained attached to C. A Avas then positively electrified, Avhile C Avas temporarih’' 
to earth. On the magnets Ijeing excited the leaves attached to A collapsed, Avhile 
tliose in connection Avith C slightly diverged—positively electrified ; thus confirming 
the idea that an incoming radial stream of positive ions does, under these conditions, 
exist. Luminosity generally accompanied these effects. Witli C negatively electrified 
Avliile A Avas temporarily connected to earth no change occurred in the electrification 
of C AAdien the magnets AA^ere excited. Noav, if the motion of charged particles either 
toAAaards or aAvay frcAm tlie denser portion of the magnetic field and at right angles to 
the magnetic axis is directly facilitated by either a constant or changing magnetic 
