292 Account of the examination of Fused Charcoal. 
with the products described by Professor Silliman as fused 
carbon.* 
REMARK. 
It was uot theintention of the Editor to have revived the 
discussion contained in Doct. Hare’s communication—out, 
from the frequent reference made in that paper, to the 
experiments of Prof. Vanuxem, it is thought proper to 
ature his paper, as it appeared in the Journal of the 
emy of Natural Sciences, of Philadelphia, for April 
1894. 
Account of an examination of Fused Charcoal. By Larp- 
NER Vanoxem. [Read March 30, 1824.] 
Tue specimen examined was sent to Dr. Cooper by 
Professor acorn of New-York, who obtained. it by 
means of the deflagrator invented by Dr. Hare 
r. Cooper was so good as to present me with the fused 
charcoal, knowing that it was extremely desirous of exper- 
imenting upon it, being very sceptical as to its resulting 
from the fusion of the carbonaceous part of the charcoal, 
believing on the contrary that it was littie else than the 
metallic, earthy, saline, or alcaline materials, probably en- 
veloping charcoal in the black globules, or if iron were pre- 
sent, combined with that metal, constituting a product 
analogous to stecl. 
My opinion tbat the fused charcoal in question was de- 
rived from the impurities of the charcoal, was principally 
owing to the sources of error not having been removed ; 
and that these sources are very considerable is well know® 
not only to those who have been engaged in the analyses 
of the different kinds of our ordinary combustible substan- 
ces, but is obvious to the common observer by the quantity 
of ashes which is left, when wood or coal has been incin- 
rat 
ted. 
Dr. Macneven did not mention that he made any ex 
periments upon the fused charcoal, other t age 2 of as- 
* Doctor Hare has given me a specimin of 
tioned by Mr. Conybeare, and they copia tome 
Carboa tony by the deflagrator ; the concretions. 
uniform in their he Sa which is light ash gray, 
= rather more brillia Ep. 
PR a ny ee 
ee a ere ee Ee 
