'( ?8 ) 
greateft Heat for a quarter of an Hour ; when the 
Matter in the Crucible appeared fluid, like melted 
Glafs. He then poured it out into an Iron Pan ; the 
Matter remained red hot fome time; when it was per- 
fectly cold, it was hard, tranfparent, and brittle like 
common Glafs ; but it foon began to relent, and in 
twenty-four Hours was almoft all turned to Water 
again. - 
He faid, “ If this Fit rum Molle be again entirely 
“ refolved in the Air, which will take up near four- 
“ teen Days time, by diftilling off the Water, and 
“ letting the Remainder melt per deliquium again, 
“ 'till all the faltifh Matter be refolved into Water, 
“ there remains an infipid whitifh Earth, which 
“ fluxed in a Glafs- Furnace, gives a true fixed 
“ Glafs." 
II. An Account of fome Experiments upon the 
Phcxfphorus Urinae, which may ferVe as an 
Explanation to thofe fhewn to the Royal Soci- 
ety by Dr. Frobenius, on November 1 8 , 
*75 1, together with federal ObferVations tend- 
ing to explain the TSlature of that wonderful Che - 
micalFroduSlion , by Mr. Ambrofe Godfrey 
Hanckewitz, Chemijl, F. (2^- 5. 
I Repeated the Experiment of the Deflagration of 
Phofphorus under a Bell, which had been firft 
fhewn to the Royal Society by Dr. Frobenius, 
but 
