1 L4 Prof. T. 1\. Lyle on /he Variations of 



Within the limits of experimental error b 5 may be taken 

 as a straight line, so that B 5 is also of the form 



y^ + BB,-, 



The curves for -\jr s and ^ b show the gradual change of 

 position as regards phase of the third and fifth harmonics 

 with respect to B : the first harmonic of B as B x increases. 



5000 



B,— ^ 



10000 



15000 — B, 



Both ^ 3 and i/r 5 seem to attain small limiting values for very 

 high values of B^ which means that all the harmonics of B 

 pass through their zero values in the same direction at nearly 

 the same instant when Bj is very large. 



In Tables II. and III. are given the analytical results for 

 two other series of experiments with King I. for periods 

 '03 sec. and *058 sec. approximately, and in Tables IV., V., 

 and VI. are given the results of three series of experiments 

 with Ring .11. 



