404 On the FranUinian Theory 



repelling the balls of the outer surface, was presented to those 

 of the inner, which were attracted by it. Whenever the balls of 

 the outer surface were attracted by the tube, its electrical state 

 was positive ; and whenever they were repelled by it, its state 

 was found to be negative. 



Exp. 10. At the conclusion of the preceding experiments 

 the jar which had been the subject of them was discharged, and 

 its outside connected with the ground. I then took the small 

 jar before mentioned, and brought its ball in contact with the 

 prime conductor, its outside being held in the hand ; the ma- 

 chine was put in action, and a strong charge was communicated 

 to both tbe jars. The communication between the ground and 

 the jar whose electrical states were under examination being re- 

 moved, the bull of the small one was presented to the balls 

 connected with the inner surface of the former, and they were 

 repelled by that of the small one in whatever manner it was pre- 

 sented, and at every distance at which it could influence them. 



Exp. II. The ball of the small jar was next brought to- 

 wards the balls connected with the outer surface ; and these 

 were attracted in Avhatever manner it was presented, and at 

 every distance at which it could influence them. 



Exp. 12. Both the jars having been discharged, that whose 

 electrical states were to be examined was charged again as in 

 Experiment 10; but the small one being held by its ball while 

 its outside coating was kept in contact with the prime conductor, 

 its iimer surface acquired a charge which was the reverse of that 

 acquired by the inner surface of the other jar, but of equal in- 

 tensity with it. After the jars had been strongly charged, the 

 ball of the small one was presented to the balls connected with 

 the inner surface of the other ; and they were attracted by it in 

 whatever manner it was presented to them, and at every distance 

 at which it could influence them. 



Exp. 13. The ball of the small jar was next brought towards 

 the balls connected with the outer surface ; and they were re- 

 pelled by it in whatever manner it was presented, and at every 

 distance at which it could influence them. — After both the jars 

 had been discharged, the larger with its pith-balls, and the in- 

 sulating stand were removed from the positive, and placed at the 

 negative conductor ; the inner surface of the jar being connected 

 with it, while the outer communicated with the ground. And 

 as the same mode of proceeding was followed in making the 

 subsequent experiments as had been in the foregoing, it will be 

 necessary to state th^ir results only, which will be found per- 

 fectly accordant with those of the former. 



Exp. 14. The jar being strongly charged, the balls con- 

 nected 



