THE 
EMPORIUM 
, 
OF 
ARTS AND SCIENCES, 
Vol. 1.1 August, 1813. [No. IL 
moN, 
( Continued from page 1 5S„J 
19thly. I say nothing respecting the effect (if any) pro- 
; ductd by the decomposition of the carbonic acid gas that 
is formed by the carbon of the coal, uniting to the oxygen 
of the ore, and of the moisture* I am not equal to the in- 
vestigation 5 for want of more precise knowledge of fact* 
1 must say the same as to the effect (produced by the car- 
bonic acid gas driven off from the limestone, to the 
! amount Of 44 per cent, in weight. I do not know that this 
is again decomposed* I am fully aware of M. Clouet’s 
and Mr. Mushet’s experiments, and I know too, that 
carbonic acid gas contains 28 3-4 per cent* of pure car- 
bon or charcoal, but I cannot yet apply them to a smelt- 
ing furnace. I shall remark upon this when I come to 
the subject of steeh For the same reason I leave untouch- 
ed any chemical theory as to the combinations that may 
be formed by the Potassium of the charcoal ashes, or by 
the Calcium of the lime, the Aluminum of the clay, or the 
Silicum of the siliceous earths* I subjoin Mr. Davy’s re* 
