( 867 ) 
A» Jccoupft of four forts of fsBinom Shining Sn'^Jla^ues^ commii- 
nicatedto the I'uhlifher from very good, hci^nds^ both in printed 
facers md in Leners not frintcd, 
TWo of thefe four fiibflances have been already fpoken 
of in two of (he late Tra^f^fions ^ v\d. Numb, 131, 
jC>.788^and Numb,i^j{.'p,^^2 ; 2nd they are, one of them, the 
FaH'itiou^ Fajleof Dr^ Bdduin , Ihining in the dark like a 
glowing Coal, after it harh been a while expofed to the Day 
or Candlelight; the other, the Stone ca!cin'd, which 
imbibes light from the Sun^beams, and fo renders it again in 
the dark, whereas the fonTer needs no Shining Sun, but doth 
theeffeft in quite overcaft: weather and even in a mi fly day* 
To thefe we (hall now add two other forts/ The onei^ by the 
Germans cMcd Fhofphorus Smaragdinu^^ faid to be of this na- 
ture, that it collefts its light not fo much frotn the Sun-beams, 
or tlie illuminated Air, as from the Fire it fclf 5 feeing that, if 
fomeof it be laid upon a Silver or Copper-plate, under which 
areputfome live coals, or a lighted Taper, ic will prefently 
(hine, and if the fame matter be lliaped into Letters , one is 
able to read ir, The other is called Fhofphorm Fulgurms^ which 
is a matter, made both in a liquid and dry form , and not only 
fliineth in the dark, and communicates a fudden light to fuch 
bodies as *tis rubbed upon; but, being included inaGlafs- 
veflel well clofed, doth now and then fulgurate, and fometimes 
alforaife it felf as 'twere into waves of Tight Differing very 
much from the Balduinian Stone, which is to be expofed co 
feme jOhining Body , as the Day, the Sur>, the Fire or fome 
lighted Candle, to receive light from thence ; whereas this 
Fulgurating fubflance carries its light alwaies with ir, and when 
put in a dark place , prefently fhews the fame. Of which we 
have this further affurance given us, that a little portion of ir, 
having been kept two whole years > hath not yet loft its power 
of fliining: So that 'tis believed , if a confiderably big piece 
>!i'ere prepared of it, it would ferve for a perpetual^or^at leafV, 
a very long-lading light. 
So far this commumcation;the effeft of which 'tis hap^d will 
indue time appear here amongfl us, if the Author be compe- 
tently eocouraged thereunto. 
Signor 
