[ 2 52 ] 
on the Point of a Knife likewife, a Quantity of Saw- 
duft, and holds it under the flat Piece of Iron, at 
about an Inch Diftance. The Effect is, that when 
the Operator takes off his Finger, the Spheroid ftill 
continuing to revolve, the Saw- duft above is all re- 
pelled and blown off, and that under attracted up- 
wards. If, inftead of Saw-duft, you place upon the 
flat Piece of Iron a fmall fquare tin Box filled with 
Water, or any other Veffel made of a Matter non- 
electric per fe , particularly metalline, and endeavour 
to draw off the Water by a capillary Siphon : the 
Water, in that Cafe, will fall Drop by Drop, as ufually 5 
but the Inftant the Bar is eledrified, it will run in one 
continual Stream 5 which, if the Chamber be dark- 
ened, jwill alfo appear luminous. This Play of the 
Water may again be flopped at Pleafure, by the Ap- 
plication of one Finger to the Bar, as above. If the 
flat Piece of Iron be unferewed and removed, the 
Eledricity runs out at the Extremity of the Bar, 
to the Eyes, in the Appearance of a blewifh Flame 5 
to the Smell, like Fumes of < Phofphorus ; and, to the 
Feeling, like a Blaft of Wind 5 as in the Experiment 
of the Sword. 
Exp. IV. 
The 1110ft furprifing of all, is that of Mr. Mufchen- 
broeck , improved by Monfieur le Monnier. A Muf- 
quet-Barrel open at both Ends, is fufpended parallel to 
the Horizon, by filken Threads within Reach : and at 
the Breech End, about three Inches from the Extre- 
mity, is hung, by a Ring of Iron worked into the 
Barrel itfelf, a fmall iron Chain about half a Foot 
in Length. A glafs Phial, refembling in Size and 
Shape 
