ipo Anafyfis of the Air. 
tained in them by a burning glafs 5 but 
the pious and learned Dr. Nieuwentyt at- 
tributes this efFed wholly to the expan- 
fton of the fire particles lodged in the Mi- 
nium, “ he fuppofing fire to be a parti- 
cl cular fluid matter, which maintains its 
“ own cfFence, and figure, remaining always 
u fire, tho* not always burning. Religious 
“ Thilofopher, p. 310/' 
To the fame caufe alfo, exclufive of the 
air, he attributes the vaft expanfion of a 
mixture of compound Aqua-fort is and 0/7of 
Carraways , whereas by Expcr. 62. there is 
a great quantity of air in all oils. And by 
pouring fome compound Aquafortis on oil 
of Cloves, the mixture expanded into a 
fpace equal to 720 times the bulk of the 
oil y that part of the expanfion, which was 
owing to the watry part of the oil and fpt - 
rit was foon contraded 5 whereas the other 
part of the expanfion, which was owing to 
the elaftick air of the oil, was not all con- 
traded, till the next day, by which time 
the fulphureous fumes had reforbed it. 
It has been the opinion of fome that 
putrefadion is the efFed of inherent fire : 
that Vegetables alone are the fubjed of Fer- 
mentation, but both Vegetables and ani- 
mals 
