The Rice belt journal. (Welsh, Calcasieu Parish, La.) 1900-19??, 1905-08-04
YELLOW FEVER BREEDERS
An Interesting Article OF the MoSqui.
to Theory by an EXnert.

New Orleans Harlequin, contains Il
splendidly yiriIe and to-the-point con-
tribution on the mosquito and her dis
seminating influence in yellow fever
epidemics.
The article teens with sense. incon-
troyertible facts and pertinent sug-
geStionS.
1t is published by courtesy of New
Orleans Harlequin.
Prof. Beyer's most timely, truthful
and ACKNOWLEDGING testimony as to
the fact-fully demonstrated-that the
mosQuito-the kind that natures from
the "wiggle-tails" in your ciSterns
and mine-is the only agency by
which yellow fever can be transmit
ted, follows and should be read by
every reader of this paper.
HARLEQUIN:
In answer to your question:
These are the experiments which
have lead to the conclusion that a
certain, one kind Of mosquito, is the
only transmitting agency of yellow
fever.
In what l say here | speak on the
authority of my own personally con-
Quoted experiments. l know Of my
own knowledge the facts [ state.
The experiments were made during
two consecutive years in an original
home of yellow feyer-Vera CruX.
Men were brought from places where
no yellow fever ever existed. They
had been examined and found to be
free from any and all ailments.
They were then taken to Vera Cruz
under absolute and complete precau-
tons against the mosquito. They
were placed in rooms in which no
mosquitoes could have lived or we're
living then.
After two weeks of continual ex-
animation, and absolute exclusion of
the mosquito, no sickness Of any
kind had developed in the men. Two
mosquitoes, of the Notwithstanding
kind which had been allowed to feed
on fatal ease of yellow fever and
which had been kept from that time
on. for from twelve to sixteen days.
in a wire-screened cage, were permit
ted to sting the men kept under obser-
walton. These men were stricken
three days and one hour after the
mosquito bites, with typical yellow
fever. The prevention of fatality of
the desease in these instances was due
to timely intervention and extraordi.
nary care.
Over two summers I extended these
experiments and observations. There
was ABSOLUTELY no variation from the
fact that this striped legged and blue
winged mosquito, which will be
known to the world in time as the
"yellow fever mosquito" and which
is now scientifically known as, "steg-
omyia fasciata," transmits yellow
fever.
Now. After I had developed yell
low fever in two non-immunes with the
mosquitoes in the manner just de-
scribed, kept these yellow fever suf-
ferers in the same protected room
with six other men who never had
yellow fever and who therefore must
have been susceptible to it. And after
three weeks not one of them developed
the disease. These experiments, too,
were repeated vsriedly so that by no
possibility could the outcome have
been chance or the disease due TO any
other source of infection than the
mosquito.
Also. All mosquitoes T used for
experimentation were reared and bred
from eggs and young larvae or wig
"details in glass jars in the labora,
tory. The freshly Matched mosquitoes
we're consequently free from the dis
ease for mosquitoes, thus reared
were continually fed, in order to keeF
them alive, on my nOn-immune' sub
iects. No subject bitten by the freshly
Matched mosquitoes ever became sick
A freshly Matched mosquito Of tina
kind fed on known and undoubtet
case Of yellow fever during the third
and fourth days produced the disease
in the same men in whom he had failed
to produce it fourteen days before
that is, before having been fed on tn
yellow fever sufferer.
Other varieties of mosquitoes leigh
teen Species which prevailed at th
time at Vers Cruz were reared ant
, orpan;,oontnd with in tho Same man