OP ARTS AND SCIENCES. 



159 



The results given in Tables II., III., IV., and V. have been used 

 in plotting the subjoined curves. In each curve the ordinates rep- 

 resent the charges on a scale of 10 microcoulombs to a division, and 

 the abscissas represent the capacities of the charged condensers in 

 microfarads. Attached to each curve is a number (m), and at the 

 upper left-hand corner of the square in which the curve is drawn 

 is another number («). These denote that a battery made up of 

 m parallel groups, each consisting of n cells in series, was used in 

 obtaining the results from which the curve has been plotted. 



Fig. 4. 



Time of charge, 0.19 sec. Unit of abscissas, 1 raf. Unit of ordinates, 10 mc. 



Time of charge, 0.37 sec. Unit of abscissas, 1 mf. Unit of ordinates, 10 mc. 



