844 M*. nairne’s Experiments to pew the 
the other end being now attracted by the artificial cloudy 
which charged it almoft inftantly again; it then receded 
with rapidity from it, and difcharged its electric fire on 
the ball as before, and thus continued in great motion 
receiving ftrong fparks from the artificial cloud, and dif- 
charging them on the ball, reprefenting in miniature a 
ftorm of lightning where an electrical cloud ftrikes into 
another cloud, and that difcharges itfelf on a building 
that is without a regular conductor, or one terminating 
with a ball (fee fig. 6.). 
✓ 
EXPERIMENT XX. 
While this ftorm of lightning in miniature continued,* 
I removed the ftand with the three inch ball, and placed 
in its Head the ftand terminating with the point; the 
point was immediately luminous, and in an inftant the 
artificial ftorm ceafed. 
The end of the moveable artificial cloud, next the 
charged artificial one, was now attracted to it, as in the 
eighteenth experiment. 
EXPERIMENT XXI. 
The apparatus remaining as in the laft experiment, I 
unfcrewed the pointed wire from the ftand, and fcrewed 
2 k 
