276 



Mr. P. E. Shaw ; 



the five times a spark is sent to the contact. After each 

 spark the orientation is gradually lost and disappears before 

 the next spark is put on, the voltmeter also returning to its 

 maximum in each case. 



Table VI. 



Eadiation. 



E.T. 



R.C. 



Voltmeter. 



One spark 



2730 

 2720 

 2730 



2790 

 2790 

 2790 

 2790 



2790 

 2790 

 2790 



2790 



2000 

 2530 

 2730 



2700 

 2770 

 2760 

 2790 



1590 

 2590 

 2790 



2000 

 2490 

 2790 



1590 

 2790 



0-27 



O^-O'S hovering 



1-42 



0-20 



7 hovering 

 1-42 



0-20 



1'3-1'4 hovers 



1-42 



0-20 



0*6 hovering 



1*42 



0-20 

 1-42 



One spark ... 



One spark 



One spark 



One spark 



2790 

 2790 



2790 

 2790 



o B. Direct and Reverse Currents, 



In this section, radiation is sent to the contact sometimes 

 when the circuit is open and sometimes when a current is 

 passing : the results appear to be very much the same. After 

 breaking the coherence and treating as in the last section, 

 all orientation appears to have gone ; but it is not so, for, if 

 the current be then reversed, at once and always there is a 

 pronounced coherence. It seems as if the particles at the 

 contact have a strain or some latent peculiarity which a 

 reverse current brings into effect. This phenomenon is dis- 

 played clearly in the following tables and curves. In column 2 

 it is stated whether contact is made once or often ; for it was 

 found that repeated make of the contact-circuit often brought 

 out coherence, when a single make failed to do so. The last 

 traces of orientation may thus be brought out and removed 

 from the contact. 



