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all above a or below unlcfs when I applied the 
Tube GG above Az Then the Thread of Trial 
would be attracted by the Plate 2), and the Top 
of the great Tube from A to a, but no lower. It 
would alfo be attrafled by all the Bar HH^ and only 
three or four ; Inches below H. 
Experiment IV. 
Having fill’d the Tube AB with Water, the Elec- 
tricky of the rubb'd Tube GG, applied at ran 
flrOngly down the Tube A By and impregnated the 
Ball C, fo as to make it ftrongly attradl the Thread. of 
Trial, whilfl: the Balls cc received no Virtue at all. 
But upon wetting the Cat-gut Sttings He with a 
Spunge, alTthe three Balls r'C and r- ftrongly receiv’d 
the electrical Virtue. 
ExPERIMEN.T V. ; 
I took away the Bar 2/2/, and its Balls and Strings j 
and having well dried the Tube, ! rubb’d it, and hung 
it up as before, fo that, it would fnap, or attract the 
Thread from a to b, but no-where elfe. ' 
Then putting the fmall Bar 2/2/ into thq Middle 
of the Tube in its Axis reprefented by the* prick’d 
Line, upon Application of the rubb’d Tube GG at 
Ay the Virtue was immediately communicated to 
the Ball C. The fame thing happen’d, when, inftead 
of the Bar, a Brafs Wire, a Walking-Cane, a fmall 
green Stick, or fmall Packthread, was placed in the 
^Axis of the Tube. 
Ex- 
