Anihracite Coal — peat 835° 
t. 
of the Rebs tiacieed h gave sss 
uld 
scratch the same green sagletey and found shag it opcode 
spoiled its oaks, and gave furrows disti regia: by:the 
eye and by the finger sail and perfectly ath l- 
er. ‘Lhe same effect, although i in a less ance was pro: 
sia ele *t; but “by no means so dliatinetly 3 = We coak 
br ae heat is oat t pushed so far in the ordinar } 
preparatory to gas illumination. - sag Sb 
The inflammable gas, ohtninéd; in the experiment on 
related, stood over water two or three days before I had leisure 
to examine it. 1 did not remove the carbonic acid, which 
is produced in all such cases, but as there was but little more 
diminution in the volume of the gases ‘in the glass J jars, ai 
might be presumed to arise from mere cooling—(the ga: 
having issued hot from the furnace) and as there was no oi 
coloration inthe water of the cistern, although it was painted 
with oxide of lead, it seems fair to infer that there was not 
much carbonic acid or sulphuretted hydrogen.* For the sake 
ail 
facts e, decidedly, 
an thi ucthil combate 
tifa pre will of course be a great amount of carbonic acid, 
and other gases, forméd, of which it is foreign to my purpose now to 
speak. Iam not at present, able to account forthe great difference in 
