, 1876-12-26

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Perhaps should explain TINT with the heatmc
tfan water tbs snnlcr numbers indicate the great
q densit!es. Two lessons hrn to be loarnGd from
ftrsf-That q light 9Il is not necessarily an un:
necessarily tho more uusate Of the two. Th!s IL
uS oihufs 'ts9 e1eop No. IT, Usually, howsyur. T. to
Of IT, s paS ys's dTSs iSs
heavier hs' ones, and honco NE usually moro
dangerous. stili an oil may be entirely free from
ho gs .n yett chow S ,-gp2s spsc,ic
heavier hydrocarbons, thu paretlns. which nrs
aod at low Temperature. In this way and IN no
psa.as sass nss III ko y b. 'aa sas aS k
~ cf a1 Its flashing point shows to be
spseaaer an n o, having low flashing r,ut
does not always hare \ low burning point. For
s1smple, No. 4 has = burning point higher than
s te IT, an la t'as " Jp p0' T. s sEs'n p;e, d.
e 6a burning ront. Of oils !: no true moasas. Of
pops nas 70
gtnnr degrees which We read q 20 much n adyes.
n.cents q o. Is 70 real S,!aeace q tnes sas
dau,' dsis an esphosion ho possible iieneo IL.
% s.asa a sos 0 fhs IT, Rsn ss ssa ons ae' uas as
4 an oil. II, however. ito lamp Is dropped upon
k4S l00f auQ pFQAt3ls Mo F04h!HAk@kJ
ton depands largely upon tho burning point VI
the oti; hence. scconaaE''y, that point shon'd bo
10 fetaru 10 the tah1s. No. ia tho oil whlcl,
caused the sceldent In tho 0aston family. 10th
" ?. md pt hsgHep t. b. stiao !o%sr than
ay he othes Gt the Yer ar r.. M
practically any worse than severa othets.
4 dlGcIencs q one. Or eyen three q M tour DE-
Ss lit = III III IL assldea eoadeans
x!th which il occurred, fot, lie saale accident
With nny ono 0f thcm. -ss....
.lis startling t9 think that these are near up to
s wea a. e
!ttc ~ to haso no rgtslns!on upon tho quality of
a, hSst dsYsros uasa tsat Hns cs ssa
lys'ba eaiese, II rsport niads to thc board Of
aealth Of New York Clty, In ls7s, gaze ~ ths ns-
smge Ct common kerosene oils ls4l..
l51 GeR, +. The lit Of tho figures u aSoast dcg
sbo.e, Ind tho second abont II deg, bulow, tGo
:es o. 1Sss tspaat 1aS fo chsassr
coaclusiyely that tho risk run " using such oils,
q oils Of anything like that quality j. sexscrdlngy
ssa tit ptSsea ts Ill Il batnx Ss sI a@p q aay s
senptton whatever, with thu ,1lr at The ordinary
tea1eratura aimost uiways uboys III iashlng poInl
q his hxcragu kcroscue, and always constdrfably
.bosa tat of thu poore. grades Of oil. which one u
Salys lab!e to euy whsFe there arc no Legal f0'
IN l'tof. Chanalurs experiments with tho lam
Resatusa u tho Euom as ~ deX. +. to ~ der. r.,
W. o! In Twelve glass Tampa ol different descrfp.
nons y. Wa sa!xcdto q temperature ranging t!um
f0de1. to VI deg, with an average Of bl deg.
~ sutsn meta! lamps shs tsmpsratafss Ssss " Cs'
%Mh the Temperature of rooin it u dog 70 u ds.
sn!uch more common ten.peFatn1e than In tho
ans sasc, IN twelve glaas lai,ra tho temperature
ofol tal.ed ~ points bu.ween 8ldsy. and bl deg,
sN,ssas!us " deg. tn Thirteen metal laMps be-
finally. %lth tho tomperataFe OF tha room at 90
eeb. 10 W dsK., . not uncommon temperature for
@ soom tn summer. with tho g1as, lamps the figures
tWefs % Deg. 10 DS dcy., ascsaglng U! deg. With
~ ma metal Tampa vi deg: 10 l*3 deg, nvc1agtnv
y ~ Il A. II These figure. show thas .hs tsnps5asHsa
sh xhleh means that usually oil having Il Aarhlng
9HSuat below 90 deg, and frequently Que having
ia tila to occur at any mo'nsns; The cunelu4on to
inhlch tacse experiments led Prof. Chand.
~, ,ana which he fofclbly presented to
y. .as t no.rd Of llca'.h. was that hashiax po!nt
!Has TO drgfec. would not b. too high ysandat4.
10 aiso showed that the adoption q this latter
.eandatd would Increase tho cost Ut oil but \ few
sSafs pos E%l!ax 10 aAsx sAas sAs.s visws afs