10 Dr. North on Fuel. 
But of late, it is contended in Philadelphia and New-York, 
that anthracitic coal, which is remarkably stubborn and du- 
rable, can be made both a cheaper and better fuel than any 
other, not only in the arts, but for domestic purposes. 
question whether such is proper to produce a pleasant and 
wholesome t wien ete is the only one now to be discussed. 
And it is thought this —— is an important one, as the 
well ee ma greater or less depres: of numbers of the 
i and of posterity, is idee involved in its 
7 
 €0) Séelbion: A certain quantity of heat, furnished ei- 
ther sari the sun or fuel, is obviously indispensable... But from 
this it does net follow, that too much heat; or heat of that sort 
which may be unsuitable, would not be hurtful. Hence the 
mquiry may very properly be made, whether the vehement 
heat, or as the case may be, modified caloric, or a carbonace- 
ous state of air, produced by anthracitic or charcoal fires, if 
generally used, may not diminish that vigour and hardihood 
of the human vege} which is so much wanted in a world like 
this. eant by a carbonaceous state of air, will be 
i russ by in a note. 
Posey will probably be able to settle this question, from 
experiments that are now making upon’a large scale. Are 
those who are exposed to the influence of charcoal, and other 
earbonic fires in the arts, and in Pennsy lvania, and a few 
ether sania as healthy and hardy as ? ~The so- 
lution of this question would help to settle the other. 
Whatever the cause may be, there should be no doubt about 
the fact, that bituminous fuel, burnt in an open fire place, 
which is made of brick or stone, produces by its radiant hea: 
hight —— more pleasant and comfortable sensa- 
" thon ts occasioned by any other sort of artificial heat.* 
? 
Aa hers: ; iS ar- 
tificially roduced, in a portion f the fears there may ge. only an 
creased qu ty 0 : uantity of the Niiaterials which 
lurnish the caloric, in combination with it, or i i 
see Sonic res, by carhoeions ster ae nom rents oxygen; or both. 
siveeffects. And bitumi od * ficas 
may diffuse 
nother portion. And the oon Sa of those yea) portions of wigarams. 
differently charged upon an’ imal bodies, are believed to rent, in- 
of the degrees of heat. » For it is a notorio : 
ceous state of fir by close confinement, has often Pree rendered saiicientig 
Pe extinguish human life, and hot carbonic acid gas is b 0 
different from that which i is cold. It is also believed that | in tie general 
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