New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1868-01-25
SCIENCE.


NEW CoILODION PAPFR.-0bernotter OF hu'
mich has brought sveTed coodon paper III tne maj
ket, Tar more sensitive than ordinary "a ybnt
paper. which makes 10 Of more service 10 "'o P"V'V
grapher during the Winter months
UTILIZING WASTE COLA series OF care,
fully conducted experiments have been made 10y Board
OF Engineers appointed by the Navy Department 70 eN-
anime into the various methods OF employing anthracite
and btuminous GOALS fuel at the works OF Messfs
WheIpey and storer East Boston Mass. furnace for
burning pulycrzcd coal there erected which the own
srs have used for e years IN their ingenious process
Cor the reduction OF metallic Noocal report OF me
combustion trials made with this furnace has yetapcaleI
but the results may be briefly stated series OF eNlt
uentS each lasting 4s hours showed the relative heatnS
power OF bitumnous coal IN humps Of four inches CUBE
burned ON CRATE with forced mast under an ~
tnbular boiler and the same kind OF coal; one "a
humps burned on CRATE, aud two thirds SACK pINSI1
AID driven lu above the fire with forced eahI No.
conditions nearly like practicable II was l O,
tat OF pound OF lump cOal eNal,oi,ao
o. pounds OF water from temperature OF l4 ~"
heit, while Onc-ihTd OF pound Of lump coal anu
hirds Of pound Of ulyerzcd coal Ya
OF water from the same temperature Inc insi
perfect that in neither case was tle It't
ashes than per cent of the coa use t - ~ ,
part OF the experiment. the Increased ~ eo r conf
Terlzed coal lump coal rose from ~ 10 ~ p' %
ewing 90 the acquired skill OF me ren@" , No. e
and regulating the neat AssuInNb Ia -, tbot ~ l,un
Ptatod by pulyerzed coal IS barely equd 10 tht W Iuh
coal. these experiments solved most ~
question what is 10 he done win te Nhst qahtes W
bne fuel which lies NJ the mouths OF con- mines IN
this country and I'm Europe. Statistics show that while
the mines OF Great Britain yield more haD OWpOo tus
of marketable coal per auuun. about $V0W tuns more
waste coal left at the mines The percentage OF
waste coal al the anthracite miics OF TINS eVundy
somewhat less than at the bltunnOus coal miles, Sel ~
has been estimated at ABOUT 20 pSf cent Vt tno IL.
weight brought TO the surface The uUZhtlOn OF iulS
waste coal would virtually add Oncnrd more 70 the value
the annual product of American mines and eventually
corresponding dimnuton OF the prices pau oy
therefore be safely tuHt
no Improvement has been lately proposed which com
PaTes IN general Importance WIN thdl ~hleh Noul o
RYaabc the waste product OF coal MINES Inc invent
OF this process OF utilizing fine coal are about Apply
ing their apparatus to locomotives Previous perments
have demonstrated that at least one-third OF the
air required for combustion should be admit
fed above the fire in tho locomotive, and the
remaining twOthirds under the grate-barS. Stl,
t.e waste resulting from rapid and Imperfect
combustion required in the locomotive IS very large III
- claimed that 10y pulyefziug coal aud admitting u IN
combination with all above the ordinary coal fire. the
rapid generation OF heat il successfully accOmphshed
hat is still important in the locomotive tat
almost entire absence Of smoke and particles
OF uncousumed coal which, in spite of sparkarTesters
have been thus FAR the dsagreeahle aud dangerous re-
suants Of accelerated combustion. The trials To when
We have referred relate only 90 bituminOus coal IL
Weuld be interesting 10 know whether the same ndNSh
tagCs be gained by pulyeIizing anthracite. when re-
G&lifes much higher degree Of beat for its ignition