﻿8 Prof. E. Taylor Jones on the most 



adjustment is not necessary in order to produce a spark- 

 length practically equal to the maximum. 



The constants of the circuits were measured by methods 

 which were fully described in the previous paper, and found 

 to be as follows : — • 



I . 





T n = IV'Oi . 1U U U.G.S., 





-^r = 8-763. 10 6 „ 



Li 2 yj 2 





k = -748, 





L 21 = 20*4 henries, 





^=680, 





3^=825. 



JU2 



R , the 



resistance of the primary circuit for steady 



currents, was 8 ohms. 

 Hence 



1= = jRjCi = 1*738 . 10" 5 c.g.s. 



2 = J-R 2 C 2 = 4*709. 10" 5 „ 



^0=^0^= 8.10- 7 „ 



The quantities Hi/L 1? R 2 /L 2j were determined from the 

 decay factors of the circuits when oscillating separately. 

 The effective resistances K 1? R 2 , & r e much greater than the 

 steady-current values ; they depend also upon losses due to 

 leakage, hysteresis, and absorption. A considerable part of 

 R 2 is probably due to leakage through the electrometer. The 

 decay factors are not constant ; the values of Rj/Lj, R 2 /L 2 

 given above prevail during oscillations of fairly large ampli- 

 tude in the primary and secondary circuits respectively. 



The calculated frequencies are : 



«! = 413-9, 



n % = 1208, 



giving %/ w i = 2-919. 



Also LA/L s C a = -448, 



while 1-F == -440. 



The differences between these values and those of the 

 ideal case (v?. 2 /n 1 = 3, & = "756, L 1 C 1 /L 2 C 2 = '429 y ) are within 

 the limits of experimental error, and may be due to the 

 above-mentioned difficulty of adjusting L } and Ox accurately 



