( ^M4 ) 
periment Upon the Repetition of which, the Mercury 
did not only appear as a Shower of Fire, but from the 
Crown of the Included Glafs were darted frequently Flafhes 
refembling Lightning, of a very pale Colour, very diftin- 
' gmftiable from the reft of the Light prodnc'd. The FlaQies 
feem^d then to be darted Horizontally, altho at other times 
I have obferv*d them to incline upwards, and fometimes 
downwards, fometimes from divers parts, as well from the 
outward Receiver, as Included Glafs. Sometimes they 
would be thrown in a figure fo odd, that I have no Idea 
of any Comparifon. I have likewife obfervM them to 
proceed direftly from the ftream ot Quickfilver, as it de- 
fended from the Funnel, before it reach'd the included 
Glafs. They generally fly to the fide of the outward Re. 
ceiver, f unlefs their Origin begins there, as fometimes I 
have obferv'd ) where the Light breaks, and fpreads in a 
very odd form. Something farther obfervable was. That 
the Crov/n of the Included Glafs appeared fenfibly 
more Luminous than any other part of it ^ which 
Light was Conftant without Alteration, during theDefcent 
of the Mercury through the Funnel, and that was at leaft 
two minutes of tj^e. The Quantity of Mercury Es'd for 
this Experiment was about 3 /. 
Experiment VL 
Shemng that Abundance of Particles of Light are difcovtrahtey 
fy fiuking fiver in a Glafs even in the Open Air^ 
^ ¥"^He Title of this Experiment, at firft fight, would feem^ 
J to Contradift the Accounts given of all the foregoing. 
Experiments, relating to the Produftion of the Mercurial 
Phofphore : In feme of which I affert that the Phofphore of 
Quickfilver is not produceable but in fuch a Medium ^ no^r 
there I would be underftood, A Light of the fame nar ire 
and quality of that difcover d in the Barometer, byputiing 
the Mv^rcury in Motion ; Which Light is very different | 
from I 
