1182 



The Galvanic Battery. 



[No. 108. 



THIRD SERIES. 



Conductors in water, hut insulated. 

 ^* By Colonel Pasleys method. 

 Form similar to the preceding. 



13 ♦ By Lieut. R. B. Smith's modification of ditto. 

 Form similar to the preceding. 



ij[r* By Dr, W. B. O' Shaughnessy' s method. 

 Form similar to the preceding. 



FOURTH SERIES. 



Conductors under ground and uninsulated, 

 ^* In Dry Soil. 



f^ 



o 



o 



.3 



§3 



Platinum Ig- 



Iron 



Igniting 



Brass Ig 



Ql-i 



c 



^ 



m 



Pi 

 o 



If 



> 

 o 



niting Wire. 



Wire. 





ting Wire. 





1=] 



O 



Is 















d 







d 







u 







<^ 



•s . 





O d 



,-1 « 



P^ 



Ph' 



pL, 



^ 



PU 



^ 



&H 



P-. 



p^ 



d 



§5 



y 



o 



^c^ 



C/2 



P^ 



d 



m 



^ 



d 



di 



fe 



^ 



12; 



h-5 



Q 



J2; 



Q 





















1 



40 



l-6th 



8 



4 



2 



2 



3 



3 



3 



4 



4 



5 



6 



2 



60 



















































3 



80 



















































4 



100 



















































jj 



&c. 



















































)) 



&c. 





















































&c. 



































,0 















24 



500 



















































Remarks. 



15. In Wet Soil. 



Form similar to the preceding. 



4!T* In Rocky Soil. 



Form similar to the preceding. — Nature, and if possible, the ingredients 

 of the rock to be specified. 



FIFTH SERIES. 



Conductors underground, hut insulated. 



Form similar to the preceding. — Nature and extent of insulation to be 

 detailed. 



i 



