Evening star. [volume] (Washington, D.C.) 1854-1972, 1892-08-13
now 10 MAKE LAUGHING Gas.
Obtained by a simple Process Prom osal
nary Nitrate cf Ammonia


Il inhale about twenty gallons Of hugiline
gas every dAy. raid a dental surgeon sho
makes a business OF pulling teeth TO a sr,I ~
porter. NO, don't do IS Tor pleasure bni Cor
the purpose OF showing patients ho~ 20 take IL.
The important thing Is to initiate the lungs with
few big breAths from the ga- bag. then con-
plete unconsciousncss supcrvenes and no Isin
whatever l. felt On the contrary. the drestns
Of persons under the influence Of nitrous o,iae
are usually most Agreeable. An Irish girl Who
came 20 me the other day 10 have tooth sS-
tracted exclaimed on awaking: sure. Thought
was at a wake A German told mo that he
dros med he was in a lager beer saloon. hitle
boy said that he Thought he WIS up in the ar,
holding on 10 the tail 81 kite
That enormous bag like n balloon which Fou
saw dragged into the Office lev minutes age 10
filed with laughing gas. IL IL made IT cAnras
coated with rubber and holds POO gallons. That
quantity snficcs for only about tweuty-fvs
patients. because they waste a good deal frem
not knowing how to take IT. The stuff does
not cost much 20 manufacture. however II ~
made from nitrate 81 ammonia. which 10 ralt
obtained by boiling ammonia in nitric ,Acid
We buy it IN graduated shape. and all thaf IL
necessary In order 20 get the gas from Il T. 20
boil At in water. In the laboratory put nve
. or six pounds Of il into a long mech ed flask be-
meath which is a lighted Bunsen burner The
Fame is very hot because atmospheric ais Is
rapidly supplied Co u. .
The nitrate Of ammonia salt !, melted in IN,
flask and the gas which il gives "a bv evapofa-
ton passes over through tube into a sealed
Jar partly flled with water Buhhling N,
through the water il passes through anotlS.r
tube into a second water Jar aud 80 through
/ four jars successfully. Being thus pa-sad
through water several times Il Is perfectly pun
l fed. When first generated IL contains a god
deal OF impurity. especially oxide OF iron. whIrh
comes from the iron vessels in which the AM
monia was boiled with nitrate acid. But all ie,-
! purities are removed in the manner have De-
scribed. and the nitrous oxide finally got.s
through pipe into a great metal tank. Tue
tank IL composed Of two big cvlinders one
partly filed with water and the other set IN
side down inside OF the first NJ YOU will isse
tall tumbler and invert II inside Of another tall
tumbler that is slightly bigger and which las
some water in IL, You will have the idea "a
actly.
The expansive power Of the gas is 40
great that IL lifts the inside cylinder steadily
up out of the outside one. the wAtsr
meanwhile keeping the nitrous oxide fran
escaping. When the tank is flled the opera
tor knows il bv the height 60 whifh
the cylinder il elevated. To al one Of thuae
huge rubber bags with the gas he simply drAss
| the gas of from the tank into the bag uutl the
latter is completely inflated and can hold 80
! more. by making our own gas IN this way
can always be sure 20 have il perfectly pure
and fresh, which is very important thing. IN
asmuch as gas which contains impurities is
necessarily unwholesome and IL must be fresh
in order 10 he good. The grcnt manufacturers
of dental supplies put up nitrous oxide in cylih-
ders for the use Of dentists under pressure q
/ $50 pounds to the square inch. that q small
receptacle will hold quite large supply: but
kept in this shape for an indefinite time and foe
only occasional use it is apt to deteriorate"