Inductive Capacity of Electrolytes. 



199 



liquid to compare with air, and to use as a standard of com- 

 parison with other liquids. The platinum damper was cut off 

 after the comparison had been made, and the force on the 

 needle in the oil was unaltered ; thus no error was introduced 

 by the presence of the damper. The following observations 

 in detail are given as specimens to show the accuracy and 

 uniformity in the measurements. The case of the oil is 

 above, and that of the air below the average in these respects. 



Table VIII.— Air. 



Difference of Potential, 43' 8 volts. 





No. 



Scale-Readings. 



Differences = 

 Double Deflexions. 





Centimetres. 



Centimetres. 





1. 



54-10 







2. 





52-65 



1-47 



3. 



5413 







4. 





52-65 



1-48 



5. 



5414 







6. 





52-68 



1-48 



7. 



5417 







8. 





52-69 



1-48 



9. 



54-18 







10. 





52-70 



1-49 



11. 



5419 







12. 





52 70 



1-49 



13. 



5419 







14. 





52-70 



1-49 



15. 



5419 











Mean... 1*483 



Table IX.— D. W. Headlight Oil. 

 Difference of Potential, 29*8 * Volts. 



No. 



Scale-Readings. 



Differences = 

 Double Deflexions. 





Centimetres. 



Centimetres. 





1. 



54-40 







2. 





52-95 



1-45 



3. 



5440 







4. 





52-95 



1-45 



5. 



54-40 







6. 





52-95 



1-45 



7. 



54-40 







8. 





52-95 



1-45 



9. 



54-40 







* The voltmeter was kept at 44-0 and 30-0 respectively, but there is 

 an index error of 0'2. 



Q2 



