[ 2 5 * ] 
Fumes of Phofphorus , and near as ftrong as that of an 
Enameller’s Lamp : with this Difference, that when any 
ocher of the Company applies a Hand, even to the very 
Point, where the concentred Rays begin to diverge, it 
bums not, nor is any other wife fenfibie to the Feeling, 
than as a continual Blaft of Wind. 
Exp. III. 
This is performed with a fquare Bar of Iron, about 
four Feet in Length, and half an Inch inThicknefs; to 
one Extremity of which is adapted, by the Help of a 
Screw, another Piece of Iron beat flat, like the End 
of one of the Legs of a Pair of Tongs. This flat 
Piece of Iron being fcrewed in, the Bar is placed pa- 
rallel to the Horizon upon a wooden Stand, and the 
Stand within the Area of the Drawer or Box, upon 
the Pitch, Refin, and Bees-wax, as above. The Ex- 
tremity of the Bar, oppofite to that, which carries 
the flat Piece of Iron, is covered with three or four 
Folds of Linen, to prevent any Damage that might 
happen to the glafs Spheroid, in hitting againft it by 
Accident, while it revolves round its Axis $ and the 
fame Extremity is moreover, for further Security, 
placed at the Diftance of about one Fourth of an Inch 
trom the Glafs itfelf, the Effect being the fame in 
every refpeft, as if in Contact . The Operator then 
orders the Bar to be eleftrified by repeated Revolu*- 
lutions of the glafs Spheroid, as above 5 and places 
one Finger upon the Middle of the Bar, to pre- 
vent the Communication of the Electricity from one 
End to the other, till he has covered the flat Piece 
of Iron with as much Saw-duft as it will carry. Some 
other of the Company, in the mean while, takes up 
on 
