The weekly Iberian. (New Iberia, La.) 1894-1946, 1905-07-29
OFFICIAL JOURNAL OF THE CITY OF
new iberia.

of the room SO rapidly that the Wire
screen door was broken down during
their exit. It happened that the mos
Quitoes in this Jar had nver bitten
yellow fever patient and were not in
fected.
After the mosquito had been left in
this condition for from ten to twenty
days, it was known that her saliva
was capable of transmitting the dis
ease When she was wanted for the
purpose of giving somebody yellow
fever, a man would take a glass tube,
slip his had under the mosquitoes, and
then fill the mouth Of the tube with a
cotton stopper, as above described.
She wonld be taken to the man to whom
and who had bravely volunteered tor
the purpose, the cotton stopper taken
out, the tube turned upside down with
its mouth resting on the skin, and the
mosquito allowed to settled. She
would then introduced her biting ap-
paratus ana slowly fill herself with
blood. But before she fills with blood
she injects her saliva into the wound,
Just as does the snake biting. 1t is
this injection Of the saliva that causes
the swelling and the burning sensation
that is felt at the point where the mos
quito bites and which lasts some time
after she had finished The injection
of the irritating saliva probably has
the effect of making it easier for the
mosquito TO get blood.
Now, it will be remembered that
this man who was bitten had been
kept IN the camp for two weeks be-
tore he was bitten, and isolated In
such a way that he could not possibly
have contracted yellow fever. There
were thirty Or forty men in the same
camp under exactly the same condi
tons. Three or Jour days after he
was bitten by the mosquito he devel-
oped weli-marked case of yellow
fever, although everybody else in the
camp remained we'll. Doctor Reed
and his fellow workers therefore, very
naturally believed that that particular
mosquito gave the man yellow fever
They repeated this test twelve OF
fifteen different time with the result
Nobody else in the camp had yellow
fever. Always within six days after
the bite OF the mosquito known to be
infected, the man eXperime nted upon
had yellow fever.
To show how house could become
infected with yellow fever, the board
conducted the following experiment
They built large rom and screened
it so that mosquitoes could rot get in OF
out. whenever l use the wore
''screen" here l mean the ordinary
wire netting or mosquito bar. The
purpose is OF course to leave a perfect
Iy free circulation of air, but to have
the meshes of the wire or mosquito
bar netting so small that mosquito
can not get through. They then divid
ed this room into two parts by a wire
netting extending from top to bottom
so that mosquito could not pass from
one side to the other, but at the same
time leaving the circulating of air en-
tirely free, desire being to show that il
it were any miasm, Or emanation, o.
germ floating in the air which causet
yellow fever it could freely pass from
one side to the other Of this netting
and that both rooms, as far as thes'
emanations were concerned, were il
the same condition.
Now. to show that the building wa
uninfected, four men we're put in i
who had yellow fever, two sleeping
on each side of the wire netting
They were left there for two week
and remained perfectly we'll. Rec
then said, II am now going to in
feet the room on one side OF this wir
netting with yellow fever and not in
feet the other side" He took the tw'
men out of one side and liberated
half dozen inf cted female stegomyi
mosquitoes on this side. The tw'
men still slept and lived on the unin
fected side. He then put voluntee
on the side with the mosquitoes AM
left him there for half an hour, too
him out, and within SIX days this maj
developed yellow fever, the two mel
on the other side of the room remain
ing we'll
He therefore argued that, as tn
two men who bad been for SO long
time on one side Of the wire netting
and remained well were breathing thu
same carnations, and the only differ
ence was that there we're mosqultoe
~, tho i0facfad side To which the mar