]23 ANALYSIS OE THE GALVANIC PILE. 



touched with the second spoon the other wire, I felt ar Strang 

 shock: but when I succeeded (which is difficult) in placing 

 the angle of the other spoon steady in the other hook, all 

 sensation ceased, and the chemical effects went on in the 

 tubes. 

 Exp. 10. Exp. 10. Repetition of Exp. 3; or of the application of 



the condenser to the points a, c, b in the circuit. 



Without With contact With Contact 



contact. of B. of A. 



a • • • • pos. 0* 15 • • • • pos. the gold leaf struck • • • • 0*0 



c •#• m • • • ,0* • • • • pos. 0-6 neg. 0*5 



b • • . • neg. 0*45 • 0*0 * . neg. the gold leaf struck. 



These results are of the same nature as in the experiment 

 with pure water, but the quantities are much increased, 

 showing a greater retardation of the electric fluid in its 

 rourse ; a circumstance which will bfe noticed hereafter. 



First Dissection of the Pile. 



Exp, 11. Exp. 11. I shall assemble here all the points correspon- 



dent to those of the above experiments on the continuous 

 pile. 



1. The same electric signs at the extremities of the free 

 pile. 



<2. The same effects concerning the shock. 



3. The same chemical effects in the glass tubes, only 

 smaller. 



4. The same residua of electric signs at the points a, c, b* 



Second Dissection of the Pile. 



Exp. 12. Exp. 12. Assembling also here the comparative results. 



1. The same electric signs at the extremities of the /re* 

 pile. 



2. No shock. 



3. No chemical effect in the glass tubes, though the elec- 

 tric sigJis had ceased. 



4. No residua of these signs at the points a, c, b. 



Third 



