C 2.12 ) 
A Sirange Experiment of Explofzon and Accen- 
fion made in Vacuo. 
1 Shall venture here to add one furprizing Effedt of 
^ this Fiery Mixture, which was done in the Prefence 
of feveral Spedatofs. 
We took half a Dram of the Oy I of Carui-Secds, 
and poured it into a little Gally-Pot, and put a Dram 
of our Compound Spirit of Nitre in a fmall Vial into 
the fameGally-Pot, and placed over it a Glafs that held 
Three Pints upon Monfieur Papins Exhaufting Engine, 
and having fbon cleared it of the Air, we turned up 
the Vial in Order to fee what EfTed: would enfue, in 
this fort of Vacuum f upon this Mixture: But in the 
twinkling of an Eye the Receiver was blown up, and 
the Mixture in a flame, which flupendious Fhiemmenon 
furprized and frightned us all. Nor did I ever fee or 
hear of the like by any Mixtures made in though 
I have my felf feen a Thoufand. For if we look into 
thofe many and Admirable Experiments made by the 
Immortal Mr. ^<7y/^', the removal of the Air did almofl 
always extinguifli Light, and Fire, asd Flame. 
The blowing up of the Glafs does alfb make the Ex- 
periment the more aftonilhing, and puzzles one how to 
Account for fo great a quantity of Air as was produced 
from thefe Liquors, which amounted only to a Dram 
and half; for here was required not only Air enough to 
fill up the capacity of the Veflel, but alfo there was 
required fo great a preflure within as did exceed that 
great incumbent weight of the Air that prefTed upon 
this capacious Glafs without, ( whofe Diameter was Six 
Inches, and the depth above Eight) for otherwife it 
would not have thrown it up into the Air. 
If 
