[ 11 5 ] 
Thefe Wires may be fo managed, that by means of 
the electrical Circuit, the Man holding them may 
be made fcnfible of the electrical Commotion, even 
under the Eye of an Obferver at the Machine j 
though before the Electricity can arrive at the Per- 
fon holding the Wires, it will be obliged to pals 
through whatever large Space fhall be thought con- 
venient for the Obfervation. The Time then fpent 
tween the Explofton of the charged Phial, and the 
Perfon holding the Wires feeling the electrical Com- 
motion, will give the abfolute Velocity of Electri- 
city to great Exactnefs*. 
XXIV. As my Inquiries upon the Subject of Elec- 
tricity have always tended as much as pofllble to the 
Analyfts thereof, I have often obferved, that if, when 
the electrifying Machine hands upon the Floor, the 
Giobcs thereof are rubbed with their Cufhions, or 
with Hands cover’d with Originally-Electrics of a 
lufficient Thicknefs, and perfectly dry, no Electri- 
city will be perceptible upon the Touch of a Gun- 
barrel fufpended in filk Lines, and touching the 
Globe in Motion, or upon the Touch of any other 
Subfiances fupported by Electrics per /<?; or, in other 
Words, there will be no Accumulation of Electricity. 
The only Originally-Electrics fit for this Experiment 
(as all unctuous Subftances, as Wax, Re(Tn, and 
Tuch- like, though Electrics per fe , by flicking to the 
Outfide of the Glafs render it unfit to excite Elec- 
treity 
* This has been fince put in Execution. See above p, 88. 
P a 
