Ss 
Description of a Magnetic Electrical Machine. 
FIG.12 
# 
EMCLARKE. , | 
4 
ty, 
wt 
Ly 
Woe, MANUEP 
STRAND 
LON DON 
223 
tinent,) &c. gave the decided preference to E. M. Clarke’s arrange- 
ment; in proof of which, he was pleased to direct that one should 
be constructed for the Conservatory of Arts, and another to be de- 
posited in the cabinet of his royal pupil, the Duke of Orleans.* 
To charge the Leyden jar and deflect the gold leaves of the Elec- 
troscope. 
Twist a piece of copper wire 
round the outside coating of the 
Leyden jar, A, Fig. 13; connect 
it with the block of the magnetic 
electrical machine. Withdraw 
the sponge from the director V, 
and connect its wire with the end 
of the intensity armature, as in the 
figure. Rotate the armature at 
a moderate speed, hold the director by the wood handle, and make it 
touch the ball for a moment only, as on that depends the success of 
* This order has been executed to the satisfaction of all parties. 
