inkindled by the admijjiotz oiJir when open'd : I have 
thought of away not at alllyableto any of the defe£ts 
or inconveaiencies, of the two former waies-, whereby 
zGlafs oi liquor inclofed in another ( like the Vrns of 
Olybtus^ upon immtjjion oi external Air:, fliall certainly 
Jhme^ though it did not fo before. And 'tis this: take 
almallP^/W, into which put a little of the liquid J^hof* 
pborm ( which yc J all know, if the Phial bo ftopt, Jhines 
not at all, the external ^/r being excluded from it ) in« 
elude this in another Glafs, as fuppofe the recipient of 
an Jir-pump, out ot which if the Engin be ftanch, fo that 
the ^tr may be w ell exhaufted, the jolid Fhofphorm it felf^ 
will leave off jhining in ten hours time, though in the 
Summer- quarter : and the liquid in fewer, fo that it fliall 
Jhine no more, than when the bottle containing it, is ftopt 
with a Gorki and both of them will be extinguiflit pro- 
portionably in a yet lefs time, if the Air be taken from 
^ them in the Winter feafon ; as has been frequently ex» 
perimented by my worthy Friend FredericJ^^Slare M.D« 
and fliall again be repeated as foon as 1 can procure a 
nicz Air-pump fit for the purpofe. Now letfuch an^^vr- 
haufied IB^cipimt with the indiXidQdPhofphortts^ be placed 
in 2iTomb or Vault which are commonly dark, and if 
ever found, and the outer Glafs broken ( as ufually fucli 
things are, by ignorant Men imployed in digging ) pof- 
fibly there will appear, upon immiffion of the Air^ as good 
^perpetual Lamp^ as fome that have been found in the 
Sepulchres of the Ancients , tho in all probability of a 
different kind, from all, or mofl: of theiB. 
J Let-- 
