. “ae Literature and Science. - $87 
t1. Acetate of magnes 53 
12. a Fie: acid anid bitter principle, (asboline,) 
-50 
i3. ‘Chloride of potassiu -36 
i4. Acetate of ammonia, Es ivhitined at 20 
15. Acetate of iron, a trace crs cheney 
Total 100.00 
The soot of a stove pipe gave nearly the same result. A- 
mong the essential products of soot are sulphuric and phos- 
phoric acids, which appear to result from the ——- of 
sulphur and phosphorus contained in the wood. It is re- 
markable {says this chemist) that smoke can transport to viel 
great heights the matters which I have determined in soot. 
We know that soot 4 eos in the chimnies of ssiatalie 
founderies, sometimes contains the fixed metals, such as gold, 
silver, &c. I have Sscorerer in soot very decided a = 
tic properties, and have preserved animal substane 
infusion of it, bar several ers without any alteration: 
simply diluting with water a mixture of soot (in pow 
i nn. 
“The contents of lampblack, agreeably to the same chewnist, 
are the following : 
Carbon 79.1 
Water 8.6 
Resin, analogous to that found in a fossil state in the 
vicinity of acme and examined by Thompson es 
Asphaltum or mesa? 1.7 
Sulphate of lime 8 
Silicious sand oa 
Imin, 4 
Sulphate of potash im 
Phosphate of tieee, very ferruginous ; 
Chloride of potassium, a trace eae sien 
Lampblack is a kind of soot, the carbonisation of which 
is much more advanced than that of common soot 
{t may be concluded from the foregoing that all the soots 
contain essentially various —- The oped of ot ed 
ble quantity of sulphate of ammonia in lampblack, gh ow 
that it ought not (as is (iequctitly done) 2 te employ 
