1883.] the Electromotive Force and Resistance of Batteries. 



61 







CD 







O 



S3 



Heating commenced. 





comnn 



Heating stoppc 



Cooling by ice 



(M r-IOOt^-^cMiHCO^t^OIMtMtM 

 O5OiC5C3i 00 X 00 00 00 00 00aia2O5O2 



0<MX>-l>'^©r-'aC>.0 0(Na5^CD'M 

 i — I i — I i — I i — I i — I i— I i — I ! — I i — I i— I i — I i — I i — I , — I CM 



g 



ooiflTfB3ooN!0'<fa)(>JN^a!a)x 



OOOOOCiOOOOOOCiOSOOOO 



N b O N 



