The Dawson news. (Dawson, Ga.) 1889-current, 1908-07-01

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own satisfaction, as we'll as to that
of Dr. Melvin, that the bacillus
cholera suis" had been wrongly
, named His method of proof was
direct and convincing. From a pig,
which had all the symptoms of chol-
era, he drew little blood and in
jected it into the system of healthy
hog. In this particular case the
blood drawn from the sick animal
had not a trace of the sO-called hog
cholera bacillus. But the poor piggy
into which the blood was injected
rapidly siCkened, and in few days
turned up his toes.
DR.. Dorset found that it was not
difficult, in the early stages of the
disease. to secure from a sick pig
( blood in which that fake cholera
bacillus could not be found at all
Moreover, the introduction of the
old cholera bugs into the systems
of we'll pigs did not, by themselves,
cause the disease which had beer
recognized as cholera. And so Dr.
Dorset came to the conclusion that
the dreaded bug played, at the most,
only a secondary part in the troubles
! of pigdom.
! This left the scientists to battle
with an enemy which skulked in
ambush During all these months of
! his fight DR.. Dorset has meyer sect
the enemy He has about given up
hope that he ever VIII see it. He
knows that it is either so tiny that
it defes the microscope, or that it
is so agile chat it's movements look
to the human eye as the flowing of
a light. One of his favorite tricks
is to turn a double back somersault
through carefully constructed fill
ter. In this speciality it has few
rivals, notable among them being |
the bug that causes yellow fever
Filter Hats Most Germs.
The typhoid fever germ, and a
great host of other inhabitants of |
bugdom, give filter up as a bad |
Job. They cant get through it, and !
that's why filtration is an adequate |
protection of drinking water supply. |
Just now this exclusive cholera bug |
gets through a filter Dr. Dorset |
doesn't know.
1t is altogether possible that he
is so small as to slip between the |
particles of the closely-packed filter !
bed Or it may be that he is as |
large as ordinary bugs, but can fiat ,
ten himself out sufficiently to get |
through. One thing is certain. he |
gets through. Dr.. Dorset has re- |
peatedly filtered blood taken from
a hog sick with cholera, introduced |
the filtered part into d we'll pig, and |
caused a fatal attack of hog cholera. |
But DR.. Dorset did not need to |
see the animal to fight him. Having
at last discovered that there was an
animal skulking in ambush he used
the very creature itself to accom-
plish the destruction of it's own pow
/ er He found hog which had sur
vived an attack of cholera, and in
! jected underneath its skin the blood
of a hog which was sick from chOl-
era. This gave the blood of the
immune hog the power to prevent
/ cholera in other pigs. And this is
the point where the tail-cutting
comes in.
The question was how to get the
blood from the immune, and thus to
secure the serum which would be
used in vaccination The difficulty
was that all the vitals and the arte-
ries of pigs lie deep, and that they
cannot be tapped without killing the
pig. But w B. Niles, who is as
sisting DR.. Dorset, found that the
blood could be obtained with least
inconvenience to the hog by cutting
off its tail. and this was done at the
recent meeting of scientists at Ames.
Keeps Clipping the Tail
Before the hog was weakened
through loss of blood the tail was
ligatured and left to heal When
the hog RECEIVERS its strength more
serum can be obtained by cutting
off a little more of its tail From
one immune sufficient serum can be
obtained to successfully vaccinate
200 hogs.
But the production OF serum is
too great a job for a federal gov
eminent, and this fact was recOg-
nized at the Iowa meeting 1t was
there decided that the state expert
ment stations should take up the pro-
duction of serum in the method
which has been successfully followed
by the federal government. DR..
Connaway Of the Missouri expert
ment station conceded in this con-
clusion. He has gone farther than
any other state expert in experiment.
ing with the serum, and has an
nounced his purpose to soon furnish
serum to the hog raisers of Missouri
Kansas. Nebraska. Indiana and To-
wa, which were also represented at
the Ames meeting. and it is expected
that those states will also go into
the tail-cutting business.
The success of the serum has been
demonstrated to the satisfaction of
scientists. In the most rigid tests
it has protected ninety-seven or
Ininety-eight per cent. of hogs eX-
iposed to the disease. The serum
is injected under the skin of the
hog to be immunized. A dose amply
sufficient for protection is about four
teaspoonfuls. BY itself the serum
will not give protection for as long