( 4°4 ) 
moved higher or lower as there was Occafion for it} 
upon one End of this Line I put a Bail of Cork, and 
found, that when the firft Line had been excited the 
Vertue was carried up to the fecond Line, and caufed 
the Cork Ball to attract. I then took off the Cork 
Ball, and put one of Ivory in its Place, and this at- 
tracted after the fame manner ; and afterwards I hung 
two Ivory Balls, one at one End, and the other at 
the other T nd of the Line, and found there was a 
fenfible Attraction when the Line that fupported them 
was raifed thirty-eight Inches above the Line of 
Communication. 
October the 30th I repeated this Experiment, 
and now when the Line thatfupports the Ivory Balls 
was elevated about an Inch above the communicating 
Line, either Ball attracted the Thread at the Diftance 
of more than a Semi-diameter of the Ball, and at the 
Height of ten Inches, at leaft half the fame Diftance. 
By thefe Experiments we find, that the Eleftrick 
Vertue may not only be carried from the Tube by 
a Rod or Line to diftant Bodies, but that the fame 
Rod or Line will communicate that Vertue to ano- 
ther Rod or Line that is at a Diftance from it, and by 
that other Rod or Line the Attraftive Force may be 
carried to other diftant Bodies. I am, 
SIR, 
Tours , and the Royal Society 9 s, 
charter-Houfe , Mod Obedient Humble Servant , 
oa. J 5 , 173a. 
Stephen Gray. 
LET. 
