It 29 ) 
V. Several Experiments on the Mercurial Phofphorus, 
made before the %pyd Society^ ^at Grcfham^Colicge^ 
hy Mr Fra. Hauksbec^ F. 5, 
&perirrient 
Shemng that Light k Vrodptc cable from Mercury, by 'P:i(Jlng 
Common Air through the Bodj of ity after the Receiver k ueH 
'Exhaujied, 
I Took a Glafs Recipient open and grownd at both ends, 
whofe content was Equal to about 50 oimces of Water: 
The upper Orifice of which was closed with a Brafs plate, 
by means of a wet Leather laid on the edge of it. In the 
middle of which Plate was fcrew'd a Stopcock 5 from whofe 
■lower Orifice was inferted by Cement a fmall Glafs Tube, 
reaching from thence to near the Bottom of a Glafs, included 
in the premention d Receiver. In which Glafs was put as 
much Quickfilver as would cover the Bottom of the Tube 
about a quarter of an Inch. Thus prepared, (fee Fig. the ift) 
and plac'd upon the Pump, the Stopcock was turn*d, to 
hinder the Airs paflage that way^till the Receiver was fufBci- 
ently exhaufted. Which being done, and the Stopcock re- 
turned, the Air then ruftt ftrongly through the Body of the ji 
Mercury, (by Paffing the Tube before mentioned) Blowing 
it up with Violence againft the fides of the Glafs that held 
it, appearing all round as a Body of Fire, made up of abun- 
dance of Glowing Globules, Defcending again into its felf. 
The Vhrnomenon continuing till the Receiver was half Repleat 
with Air. 
Ex- 
