( 4 07 ) 
near the Hoop gave ir a ftrong Attraction, fo that 
it would attraCt a Thread at the Dtftance of feven 
or eight Inches, and ar the fame time there was an 
Attrition communicated to the Packthread. Then 
I fufpended an Ivory Ball, of two Inches Diameter, 
at the other End of the Packthread, and applying 
the Tube to the Hoop, there was an Attractive 
Vertue carried to the Ball, and it would attract the 
pendulous Thread at the Diftance of near an Inch. 
I then pi iced the Ball in or near the Center of the 
Hoop, and now it was fo far from being attracted, that 
it was repelled by the Ball, but was attracted by the 
Packthread palling to it in the Arch of a Circle, 
whofe Center feem’d to be that of the Ball. 
This is all that I have at prefent to communicate, 
who am, 
SIR, 
fbe Society's , and your 
; Mojt humble Servant , 
Stephen Gray. 
Hhh z 
II. EPHE- 
