THE SMITHSONIAN INSTITUTION. 



333 



BUNSEN'S BATTERY, BY DELEUIL. 



Insertion in 

 metres. 



Deflection. 



Tangent of 

 deflection. 



Force of 

 current. 



R. 



E. 







68.7 







7.2 





 50.7 







7.2 





 29.2 





 49 



33 30 



8 



24 52 



20 7 



24 52 



9 



57 



38 



57 



17.8 



57 



11.8 



Mean of the observations. 



0.7133 

 0. 1405 

 0. 463 

 0. 366 

 0. 403 

 0. 158 



1. 54 



0.781 



1. 54 



0.321 



1.54 



0.21 



49. 931 

 9.835 

 32.41 

 25. 62 

 32.41 

 11.06 



107.8 

 54.07 



107.8 

 22.47 



107.8 

 14.7 



10.8 

 27. 16 

 26,10 



Mean. 



7. 4t 

 7.72 

 7.74 



Mean. 



BUNSEN'S BATTERY, BY STOHRER. 



GROVE'S BATTERY. 



