. ( 55 ) 
I. An Account of the Experiments Jhewn by 
Sigifmund Auguft Frobenius, M. D. 
F. 5 . at a Meeting of the Royal Society 
on November 18, 1751, with his Spiricus 
Vini y£thereus, and the Phofphorus Uriqae, 
from the Minutes of that Day, by Cromwell 
Mortimer, M. D. ^ S'. Seer. 
H E took a Solution of Phofphorus in the 
/Ethereal Spirit of Wine, which he called 
Liquor Luminofus , and pour’d it into a Tub 
of warm Water } whereupon it gave a blue Flame 
and Smoak, attended with fo fmall a Degree of Heat, 
as not to burn the Hand, if put into it. 
He pour’d fome of his ./Ethereal Spirit of Wine 
upon a Tub of cold Water, and fet it on Fire with 
the Point of his Sword [which being firft heated a 
little, he touched with it a Piece of Phofphorus 
lodg’d before-hand on the Side of the Tub]. After 
the Deflagration the Water was cold. 
He then {hewed a very extraordinary Procefs 
with Phofphorus glacialis Urhue, or Stick Phof- 
p horns, of Mr. Ambrofe Godfrey Hanckewitz. 
He had a very pompous Machine, which he calls 
Machina Frobeniana, pro refolutione Combufibi- 
Hum. {invent a anno 1730.) It is really an Im- 
provement of the common Bell, under which the 
Oleum Sulphuris per campanam , is commonly pre- 
pared. This Machine confided of a concave Plate 
H of 
