Anthracite formation of Wilkesbarre, &e. 15 
I find, in using this coal, a great _— of labor, and the 
copper is not so liable to be injured as by wood, because 
there is not so a danger of burning the still, or running 
foul at the w 
mode of s setting stills for this kind of coal, is as fol- 
lows :—I draw a circle sufficiently large to give room for a 
circular flue, round the body of the still, of about four inches, 
Aeaving an opening of twelve inches wide and two feet deep, 
for an ash hole; I then raise the ash hole twelve inches 
high, and put on my grate, which is made of inch are 
bars, placed about three-fourths of an inch apart, an 
sufficient number to cover the ash hole. I prefer to nid 
the square bars riveted (instead of putting them in loose as 
some sce tease fee i front, of 
; then up a Cast iron frame i in f 
teen faches wide nd twelve high, with d 
elve high, with a cast iron door 
raise the side wall and back of the fetitioe a 
little flaring to the height of the cast iron door frame, level- 
ling the top ; then put down four brick for bearers, on which 
set my still; then drawing a flue of about four inches round 
the sides of the still, enclose it at the top rise of the breast. 
This mode I find to answer a very good — for stone 
coal. It is not mee to have a slider or damper in 
chimney, because by closing the front of the ash hole, and 
opening the door couhe fade wil -sefiisiently check 
the operation of the fire when required. 
GEORGE HAINES. 
March 10, 1815. 
I have used the Lehigh coals. They: prodace'a: a greater 
degree of heat than any other fuel I am  aequsnted with— 
they give no smoke—contain no | I have tried 
outside of the boiler. While the boilers are clear of soot, 
less fuel will produce steam to drive the engine. The fur- 
nace must, reais age seeped papier, bes ie peoeerly con- 
structed for them. 
