616 



Mr. J. Viriamu Jones 



[May 24. 



disturbance due to the induction current on reversal ; but to take the 

 readings for tbe extreme positions in an oscillation, and having pre- 

 viously found the coefficient of damping, to calculate the position of 

 rest from these two readings. 



Here is a table of an average set of such observations taken during 

 a three minutes' run. The readings with the commutator in one 

 direction are denoted by E, and those with the commutator in the 

 other direction are denoted by W. The deflections on reversal are 

 given in the column marked W — E. 



Table II. 



