The daily star-mirror. (Moscow, Idaho) 1911-1939, 1913-05-19

absolutely essential before any at
tempt could be made toward the man
ufacture of serum. About March &c
these hogs arrived and we inoculated
them on the 22nd with the south
Idaho virus with the expectation OF
producing hyper-immunity and thus
getting the first batch of serum. These
hogs, from March % to April 3, were
repeatedly inoculated with larger
quantities of the hog virus and at the
end of that time, being in thrifty,
healthy condition, they were killed
and about 1000 &C. of serum obtained.
This serum we have and have used in
tests to determine it's potency Up to
the present time, however, in our
work in testing this serum we have
not been entirely satisfied with the
results, for the reason that the south
Idaho virus does not produce type
of disease at all commensurate with
hog cholera symptoms. In fact, on
March we inoculated healthy hog
from the farm with two &C. of virus
from south Idaho, and on the 22nd OF
the month this hog showed no symp-
toms whatever of the disease. This
aroused our suspicion as to the type
of virus obtained from south Idaho.
On March % this same hog received
large dose of virus from Kansas,
and in eight days the hog was dead,
having died with what DR.. Baker pro-
nounced thrombosis; and showed no
signs of cholera.
con April 5 three hogs were inocu-
lated with virus from Kansas and two
of these were given protective dose
of serum. The virus hog should have
died and the other two lived. One OF
the protected hogs died, however, and
the virus hog died, both at the same
time and both with the same symp-
toms; but in neither case were the
symptoms hog cholera; and accord
ing to DR.. Baker, again they were
diagnosed as having died with pulmon-
airy swine disease.
"Upon autopsy neither hog showed
the hog cholera symptoms which were
generally so evident upon the kidneys.
Furthermore, these two hogs that died
did not do so until April 9th; in
other words % days after incubation.
Hog cholera virus should kill the hogs
in from 10 to IA days. If it will not
do that; it is certainly not a desirable
virus to use in the manufacture OF
the serum which is designed to be
used throughout the state for the pro
lection of hogs.
"On April 81 three hogs were inocu-
lated again with some of the blood
from the hog that had died the same
day with the aforementioned symp-
toms, and today-May 10-none OF
these hogs showed any signs of sick
ness.
"On April 20 three large hogs were
brought to the pens and given a pro-
tective dose of Kansas serum without
any virus whatever. On May one OF
these hogs had all the symptoms Of
the previously sick hog; namely, that
pulmonary type of the disease.
"On April % two hogs were again
inoculated with virus from Kansas.
At the present time these hogs are
we'll and thriving.
"On May Z we received some virus
from Dr.. White in response to a re-
1uest made several days before, and
we inculated three hogs the same day
with two &C. Of the virus. On May
these hogs appeared to be still normal
in every respect, and one of these was
given 35 &C. of Kansas serum as pro-
-ection. Should each of these hogs
show the same type of disease as those
noculated previously, and should
hey not succumb for 81 to "a days;
and further, if the Kansas serum does
not protect, we are rather OF the
opinion that the use of hog cholera
serum with the hogs in south Idaho is
lot effectual, and it will be necessary
or us to investigate further the
plague ravaging the hogs in the south
md determine then as to What would
De the best procedure to follow
eel that we have exhausted every en-
leavor to produce type OF disease
1ere that would enable us to make the
serum adequate for use in south Ida
10.
II have sent to Oklahoma for virus
With the request that it be obtained
rom the most virulent types possible;
md as soon as that arrives we will
start another batch of hogs with the
lope that we may be able to get type
# serum which will meet our needs.
When seen this morning by Star
dirror reporter, Professor Nicholson
aid: 1--WE are still carrying on our
experiments with the manufacturing
VIZ will