1840.] 



The Galvanic Battery. 



1181 



TABLES OF EXPERIMENTS. 



To determine the number of cells of a Galvanic Battenj (Dimensions, SfC, previously specified) re- 

 quired for effecting the Ignition of different substances, at different distances, and with different 

 Igniting Wires. 



FIRST SERIES. 



Conductors dry and uninsulated. 



1 



o 



d 



% 

 § 



o 



o 



t 



o 



o 

 o 



1 



Q 



o . 



Platinum Igni- 

 ting Wire, l|in. 



Iron Igniting 

 Wire, liin. 



Brass Igniting 

 Wire, li in. 







(3^ 



3d 







i^ 



Q^ 







1^ 



go 



Remarks, 





Ft. 



In. 

























1 



40 



I -6th 



8 



2 



2 



3 



3 



4 



5 



6 



7 



8 





2 



60 

















































3 



80 

















































4 



100 

















































5 



120 

















































6 



140 

















































7 



160 



















































&c. 



















































&c. 



















































&c. 



















































&c. 



















































&c. 



















































&c. 

















































24 



500 



































' 









* S. p. C, Saltpetre Cloth, 

 F. P., Fine Powder, 

 C. P., Coarse Powder, 



Conductors increase in length in arithmeti- 

 cal progression, the common difference be- 

 ing 20. 



SECOND SERIES. 



Conductors in water and uninsulated. 

 ^» Water Fresh. 



CO 



1 





o 



•S 





Platinum Ig- 



Iron Igniting 



Brass Igniting 









03 



o 





niting Wire. 



Wire. 



Wire. 







Oh 



6 



rS 



si 



^ 



















H 

 <+-! 



^4-t 





ri o 



«4-H 



o 



1 





o 







u 







Remarks. 



■s^ 



o 



a 



s 



-A 



^ 



Ph* 



p^. 



p^ 



cu 



Oh 



p^ 



cu 



Oh 



Ph 





6 



00 



^ o 

 6^ 





CO 



c^ 



^ 



c/^' 



^ 



o 



^ 



^ 



o 





i^ 



^ 



Q 



'A 



Q 























1 



40 



l-6th 



8 



5 



3 



3 



4 



4 



5 



6 



6 



7 



8 





2 



60 





















































3 



80 





















































4 



100 























































&c. 























































&c. 























































&c. 





















































)) 



&c. 





















































24 



500 





















































il5» Water Salt. 

 Form similar to the preceding. 



