Anthracite Coal of Rhode-Island. 93 
‘The ashes of the anthracites are recommended in Say’s 
Entomology, as being useful in destroying the worm that in- 
fests the roots of the peach tree 
rsons suppose, that fire, maintained by the anthra- 
cites, must, on mccount of the intense si which the com- 
bustion of this fuel produces, be necessarily oppressive. It 
is true, that a degree of heat may easily be generated, in this 
manner, that is greater than is reeable or useful. 
but the generous courser is easily regulated by bit and bridle, 
and, although si of rapid speed, readily submits to a 
vemen 
tadciceated mo 
sto 
supply of fuel and the draft of air, tS to the weather, 
and to open and shut the doors of the rooms, as may be ne- 
cessary. In the severest weather, it may sometimes be neces- 
sary to close the communication with every room, except one, 
until that room is brought to the desired temperature, when 
another door may be opened, and a second ee, warmed, 
and so on, until we reach the limit of energy be g to 
means in hand ; for, even the anthracites are not omnipotens 
in subduing cold, and those persons will be disappointed 
who expect every apartment of a great house to be heated, 
like a sitting parlour, by one fire, perhaps fifty feet from some 
ef the rooms. The air of a considerable number of rooms 
peg however, be agreeably tempered, and two or three that 
are immediately contiguous to the furnace below, and as 
page more at the head of a stair case, at whose foot the fur- 
nace stands, may, (upless when the weather Edeeerer en) be ef: 
It is supposed by | some persons, t that the phir) must, 
ef course, be out of the question, in the mild weather of 
ing and autumn. On the > Saptanig he the anthracite fire, 
a speak of it as sustained in the lined furnace) is perucolenty 
of “A common Ss eeaiee which is now so seer 
more healthy appearance than others, and they are mot at all at all — 
this destructive i insect.” (Say's Entomology Art. Egeria Exitiosa. 
