The morning news. [volume] (Savannah, Ga.) 1887-1900, 1899-08-28

tor froze a band three inches wide round |
the forearm and then applied the usual
treatment to the entire arm. including the
part he had sprayed. Al the next dress
ing the band was distinct from the rest
OF the surface of the arm, that part hay
ing improved so much more.
Il nrSt began 10 use liquid afr in the
local treatment of ulcers OF the leg says
Dr. White and in the last four months
so many cases have come here 10 the skin
disease department and have had success
Iul treatment thai am safe in saying we
have nothing else at our disposal to-day
PAat viii clean up the edges aud stimulate
the surface of an ulcer TO EXAMINATIONS so
quickly, so thoughly aud with SO little
pam as liquid air | had a case of a boy
with blank-cartridge wound in his hand.
The lad was nervous, but thought il best
10 cut in to see if there was not some
foreign substance inside. l used liquid air
spray and he did not feel pain l might
say here that there is no pain In the on
pllcation of the spray except at the begin
ming, when there is a burning or tinging
| Within less than minute the part under
the spray freezes hard as ice, but the cir
culaton returns again in a short while
without injury to The tissues. The spray
aEaeStehizes the part thoroughly without
freezing it solid. l have tried it in many
cases as local anaestehuc and always
with success. a great advantage the spray
has over other anessthetics is that II pre-
vents hemorrhage during the operation,
and enabdes the operators to Apply
dressing before hemorrhage sets in. The
dressing is sufficient to stop any oozing.
But to return to he boy with the wound
cd hand. l sprayed the hand her too
/ freely, so that when l tried TO cut into it
/ with the scalpel / might just as well have
tried to work on a cake of ice, In thirty
! seconds, however. the hand had thawed
/ sufficiently so that l performed the oper-
] OFT kx-tf1 .nt7f
hemorrhaee and without using more of the
/ spray When the boy came back to the
/ clinic a few days later the wound was in
/ perfect condition; there was no loss of It's
/ sue, and he continued to improve steadily
/ until recovery was complete In using IL
! quid air as local anaesthetic l believe it
/ is letter to apply it little at time while
/ the operator is at work than to fleece the
/ part that il win remain sense!ess for
! any length OF time This Intermittent use
/ of the spray would not be necessary for a
/ single incisiOn, such as the opening of an
| abscoss.
Know Little About Liquid Air
! eve do not understand the action of Ii
/ quid air yet. We are not familiar with it.
| We only know That We do NOT know much
| about it, but now that Professor TrlDler
! has discovered a way of manufacturing il
| cheaply we shall begin TO earn. As he
/ makes it, il costs much less a gallon than
| stores. We know that its temperature is
| 312 degrees below zero Fahrenheit. 1t con-
/ tains nitrogen and oxygen, with a varia-
/ BILE quantity OF carbon diOXiGe By weight
/ the proportion Of nitrogen 10 oxygen is
/ about three to one, and by volume about
/ four to one. II does not contain hydrogen,
/ because il requires a much lower temper
1 AZURE TO liquify hydrogen than to Iquify
/ either oxygen or nitrogen. Ii is a some
/ what opal colored fluid, and if filtered
/ through ordinary filter paper
! 1t has the color Of the at
+nosphere, as seen in the distance on a
clear day. As one looks at it In . vessel
/ it appears like boiling water and gives off
a white Vapor that disappears rapidly. The
vapOr being intensely cold falls to the
ground You may thrust your hand into
/ liquid air. but do not hold II there. IT feels
dry and cold, and does not leave moisture
1 on the hand. The sensation the spray
| gives to the hand is something like that of
q faradic current. If you throw cup of
liquid air on the floor it behaves just as
| a cup of water would If thrown on hot
stove. Il makes the same explosive noise,
/ and disappears rapidly in Vapor without
leaving moisture or ether trace behind.
The floor of course, or any article in the
| room is 400 degrees hotter than the liquid
( air. Liquid air is not explosive, unless one
| seals it up Theoretically. You can put it
/ in q bottle or in milk can SO long
y
Il lighted motch into the liquid just after
you have poured some of il into a glass the
/ light viii 90 out, but if you wait a little
it viii burn brilliantly, and the combustion
will be perfect. This is because the nitro
gen in the liquid air eVaporates much
more rapidly than the oxygen; as the nitro
gen dissipates, the proportion Of oxygen in
/ creases. Oxygen is fuel 1t stimulates
+ flames just as oil does. When the proper
/ ton of oxygen is large you may put a
/ piece of white hot steel or iron into the
/ liquid air and the metal will melt.
Can't Freeze Germs.
I've know that 16O degrees of heat de-
| stroys all forms OF germ life, but any
! amount of cold seems TO have little effect.
! l experimental to see if the curative prop
! critics of liquid air were due to power to
! kill germs Dr.. Jenkins health commiss-
Toner, kindly gave me the privileges Of the
/ hospital laboratory Of the department In
/ order to test the effects of liquid air on
germ life. With DR.. Parks assls lance We
/ tested the effects on typhoid, anthrax and
/ diphtheria bacilli. We put pure cultures
/ Of the germs of these Virulent diseases
| into capillary tubes. We marked these
/ tubes sealed them at both ends and
! dropped them into a glass of liquid air.
/ From time TO time We added more liquid
/ so as to keep the tubes constantly sub
/ merged. We let them stay in the bath
! from thirty TO ninety minutes. The cold
1 did not affect the germs in the least, so far
as we could discover. Then we put cul-
| ture medium loaded with colonies of an
| thraX germs into glass of liquid air
/ without the protection of the glass tube,
! as in the first experiment. The liquid now
came in direct contact with the germs,
which we're allowed to remain there over
an hour. Still the germs were not Dis
commoded in the least.
These experiments show that liquid air
| is not an autiseptic and that germs can
resist temperature of 3l2 degrees below
zero. even though exposed to il for long
! time. l hope to make experiments before
long by exposing baclh to liquid hydrogen.
/ think intense cold may hinder the ac-
! tvity of germs temporarily without de-
| stroying their life.
"By the means of liquid air we may be