498 Mr Owen, On the Magnetic Deflexion of the Negative 



This result shows that all the carriers of the electricity from 

 the glowing wire at this temperature are corpuscles. On con- 

 ducting the experiment at higher temperatures, when much 



Diagram I. 



I 4 6 



1 ampere = 59 lines/sq. cm. 



8 lo 



amperes 



bigger discharges were dealt with, it was found on plotting the 

 results as in Diagram I. that the curves became flatter and 

 descended towards the axis of H as the discharge got bigger. 

 At a temperature of 1150° C. when the discharge was 3 x 10 -8 

 ampere only about 10 °/ was stopped by a magnetic field of 

 820 lines per sq. cm., the potential of the wire being 125 volts. 

 These results led me to the conclusion that whereas at low tem- 

 peratures the current is carried wholly by corpuscles, at higher 

 temperatures a large proportion of the current is carried by heavy 

 particles, the proportion of particles to corpuscles increasing with 

 the temperature. 



Further experiments have confirmed the results obtained at low 

 temperatures, but a modification of the experimental arrangements 

 has shown that the result obtained at the higher temperatures 



