[ 101 3 
By reafon of the Diftance of the Ends of the 
Cat-gut Strings dofe to the Plate at eee^ I was able to 
thruft in between them one End of an open Tube 
G G, after I had rubb’d it fo as to make it eledrical, 
to fee whether I could make the aforefaid fufpended 
Tube AB the Conductor of Eledricity to the Ball 
Ci but the firft Trial was in vain. 
E X P E R r M E N X II. 
Then laying horizontally over the Plate ® 2) an 
Iron Bar a quarter of an Inch thick, and a Yard long, 
I hung at the Ends of it two Ivory Balls cc, of the 
fame Size as C, by Packthreads of the fame Length 
as the Tube AB. 
Having again made the Tube GG eledlrical, I ap- 
plied it over Ay as before, and immediately the two 
Balls cc received the Eledricity, fo as to attrad the 
Thread of Trial T hanging at the End of the 
Stick STy when applied near themi though it re- 
ceived no Motion when applied to C. But if the 
StringsJYf, inftead of Packthread, were Cat-gut, then 
the Balls c c received no Eledricity from the Tube 
G G r-ubb’d and applied over A. 
N.B. To be fure that the rubb’d Tube is made 
eledrical, I pafs my Fingers near it after rubbing, to 
hear whether it fnaps j but always rub again before I 
apply it } becaufe by fnapping it lofcs its Eledricity 
at the Place w'here it fnaps. 
Experiment IIL 
When I rubb’d the Tube A By it would then attrad 
the Thread of Trial T between a and ^5 but not at 
C c z all 
