New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1858-02-11

COlscffl.
once been used, arc now bought up and rernehed
ard again rolled into plates. This was done only
in Philadelphia until the las, year, when the pro-
Gers was introduced into this city and /. nov, ca,.,
on BY the method of the compound or oxy.hydrccen
blowppe Of DR.. Hare. The apparatus, which y nj ,hs
house of Dr. Roberts IN Bond street. consists OF N.
usual vessels for generating oxygen from the chlorAis
Il potash and hydrogen from the action Of dilute sui
phurc acid upon zinc. There gases are conveyed as
they are made into two cyindric gasomeiors,
,tructtd Of copper, standing abolt feet , inches IN
light ard Of the capacity of about 10 gallons esoh.
This we believe is nearly three times the capacity u
the reservoirs for gas used by Dr. Hare in his oee.
bra,ed experiments. The Cfoton water Is Animated
into the bottom of these gasometers its dow beng con-
troned by stcp-coeks As il flows in exsrts pres.
sure Of about 60 pounds upon the square isch, thus
driving the gases with force which grssty adds 70
tie efficiency Of the combustion. The gases, de
emerged each under the same 1ressurs peas through
lncia rubber gaspipes I'll they aeei in brass tube
hted and closely packed with bapal. Of brass wire
laid in lengths along the tube. T,oush this thew And
their way, but the packing rr-srs che retroc-.sou of
the fame. Other bundle m Al, also the extrcmi.
ties of each gas-ppe jut ;,sIo.r ey unite together.
This is further precauti, avaitst the mixing and
podpg of the gases bsck from t.e point at which they
are consumed The nozzle, or what may be called the
uyere passes through large tube of "copper" about
three inches long, which 10 tight at the bottom but
open al the top 80 as u contain water for keeping the
extremity cool. The Iorzle terminates In metallic
plate usually Of platinum. but in the experiment we
saw' OF copper about half an inch long by quarter
in width and perforated with p holes in three
| rows. The tpl~ac.. il Get in n stand, 20
| that the .,1h. = little higher than the
| top Of an p7N tnble The let 10 direc<cA
downward 20 SO play upon the surface Of any
object held bencs w. The scrap platinum s prepared
by COMPRISING in an iron mold the bits Of wire plates
and foil by meats ola hammer and pestle. Two a
three Of these dies each somewhat larger than sves
dollar and several times as thick are laid upon th1
plate of friedrich and heated to white hea. In fav-
mace. They then psssed with their support Ia
large Tin PAM which is lined with plaster Of Pars and
Immediately brought under the jet, which bursts into
| fame with slight explosive sound the siop-cocks
are turned and the gases stke the heated surface by
adjusting the stopcocks the experiment proceeds,
the proper proportion Of hydrogen aud oxygen al.
ntd for the production of the most intense heat the
appearance of the light and flame Indicating
Of one or Of the other gas Tho metal begins al
to show the eIec of the extreme heat II mets upon
the surface rapidly and different parts brought
under the let BY moving the pan held IN the hand the
"hoe HOWE 'ose'"'' nv V"' 10y, .'' ~
cient hqnoily 10 run OH 'he n'' plate CUM nv
consequently DE cast IN noo' "nen .u''es' :"
platinum is thus brought in,o n'e"eu ~s'' ns"P-
pearance very beautiful IL n"h'e ilhe Pare "vc',
ard has uster OF great p'ihahoy ~"io ~ tue '""e
time 1t Is soft ana pieasing 10 ue eye. Inc ss'"N
invisible az they proceed nom tue e', Nj" tue u"
seen Only as IL Ii turned 10 one sue a,,'' -. r'
metallic surface, "hen "sSun'es !eao" 0'~'' LUZ
light is intense, so as 10 oe paniui UNI" 'ne
customedto It. Inc cake o' p'"An""' n's' "'saNs
weighed ounces ana sn.'"e, "as 'oon a,'' '''s'
whhou. renewing ,nesePpy 'oAyse' Wa'o" N''sno.
IL or ID d"ts' d. "ooe'" mas n'enoa one mes
oonnces' ack'ng asmah nac"o" u al ounce "nso
the meHms Is eo"Ps'ea' 'no Psu"u'" namn''""
upon an ANU INC Da' VI 'e'no' "o" a"" '"e a.''
merng may DC continued ai'c, .as Deoo.' 'c's TOO
metsi peng ~ 'uo"' anu !" os
"eoea nh' INC 'o''s'' anu oe'' ya""'y ~ "oa w
o"i Ia" VI "o"'A " 70 p,oas"' W ',' ''.
'"'p, =,
.n'oosn "' 'o"' "",", 80" "aa',
nao no, P'"'e' III '',' '""P' 'o"'' '' w."
10 De cut in'o s'HPs 'or dia"''s n'o ""s'
| In view OF 'ne constantly Increasing oe''""' :" ~.
hpun' the introduction OF .ne ne''oa OF co"'e'unk"
into usefu shapessa matter OF no MITE Importance