100 



Potts — Rowland's New Method. 



of the room, as these were comparatively slow. Of course 

 there was still some slight heating by the current ; but this 

 in extreme cases did not amount to enough to occasion an error 

 of more than one or two per cent. 



Table II gives results for the absorption of all eight sections 

 of this condenser in parallel, for different periods of the cur- 

 rent. In Fig. 3 the above results are plotted ; the ordinates 









Table II. 















r= 



6020 



Re- 



1060 



R4 = 



303-L 



Date, 









calculated 







A 



etc. 





R 3 



Ri 



Ri' 



A 



T. 













(R/ — Ri 





T~ 



2-23-99 



1 



7192 



34-68 



44-81 



10 



13 



0557 



181-7 



-22- 



2 



7251 



34-70 



44-45 



9 



75 



0544 



179-2 





3 



5564 



34-67 



57-91 



23 



24 



1269 



183-2 





4 



5556 



3466 



58-00 



23 



34 



1291 



180-8 





5 



6694 



34-73 



48-15 



13 



42 



0735 



182-6 





6 



6718 



34-77 



47-97 



13 



20 



0717 



183-6 





7 



7016 



34-85 



45-93 



11 



08 



0602 



184-1 





8 



7044 



34-88 



45-75 



10 



87 



0592 



183-6 





9 



7921 



35-11 



40-68 



5 



57 



0301 



185-2 





10 



7910 



35-10 



40-74 



5 



64 



0301 



187-4 



represent A, the resistance, which in series with the con- 

 denser, would be equivalent to the electric absorption ; and 

 the abscissae represent the period of the current in seconds. 

 The curve proves to be a straight line, or A /T is a constant 

 within the limits of error of the experiment. On account of 

 this very simple relation connecting A and T, this condenser 

 was exceedingly convenient for a test of the method. 



The first test applied was to change the relations of the 

 resistances in the different arms of the bridge. Table III 









Table III. 













i 



= 6536 















Date, etc. 



R 2 



R 3 



Ri 



Rj 



R/ 



Calcu- 



A 

 (R/-R0 



T 



A 

 T~ 



3-16-99 











lated. 







1 



509-2 



5561 



507-2 



34-81 



46-57 



11-96 



•0640 



186-7 



29 

 o 



509-2 



5581 



507-2 



3466 



46-40 



11-74 



•0628 



187-0 



3 



207T 



4598 



99-56 



34-65 



44-97 



10-32 



■0558 



184-9 



4 



2071- 



4622 



99-56 



34-65 



44-74 



10-09 



•0541 



186-5 



5 



1009-5 



6750 



302-9 



34-71 



45-42 



10-71 



•0572 



187-2 



6 



1009-5 



6785 



302-9 



34-68 



45-19 



10-51 



•0563 



186-7 



7 



302-1 



6732 



1009-2 



34-83 



45-41 



10-58 



•0563 



187*5 



8 



302-1 



6728 



1009-2 



34-84 



45-38 



10-54 



•0563 



186-8 



9 



99-46 



4511 



2044-5 



35-00 



45-19 



10-19 



•0542 



188-0 



10 



99-46 



4511 



2044-5 



35-04 



45-19 



10-16 



•0536 



189-7 



