504 Mr Owen, On the Magnetic Deflexion of the Negative 



It will be seen from the above numbers that the law 

 H 2 / V = constant is obeyed as well as can reasonably be expected 

 when one considers how greatly the actual experimental arrange- 

 ments differ from the ideal case for which the law was deduced. 



Diagram III. 



1 ampere = 59 lines/sq. cms. 



amperes 



The mean value of e/m found lies well within the range of values 

 given in the table on page 117 of Prof. Thomson's Conduction of 

 Electricity through Gases. In that table the largest value of e/m 

 for the corpuscles is 1-865 x 10 7 and the smallest 6*39 x 10 6 . 



We shall now give the results of experiments made at con- 

 siderably higher temperatures. 



In these experiments the discharge from the wire was found 

 too large to be manageable when using an electrometer. A 



