Daily capital journal. (Salem, Oregon) 1903-1919, 1907-05-27
MILK
SCIENCE AND
MICROBES
AN INCIDENTAL TAlk ABOUT BEEF
Sayent Tells How BaCilll Gets Info
the Lungs

NsaN - AAAANA aAAAN4 AANtA AhANhA va AEAAT
culture is distributing a report made
by DR.. +. c. Schroeder, superintend-
ent of the experimental station, and
w. f. Cotton. assistant. on THE
Danger from Tubercle Bacilli in the
Environment of Tuberculous Cattle"
The report is a study Of the way in
which tubercle bacilli may be trans
mitted, and the reading OF It's argues
for the most careful cleanliness about
dairies possible to attain. The bur-
den of this report Is that tubercle
bacilli are transmitted through the
stomach and intestines, thence into
the circulatory system and into the
lungs from the atmosphere. While
there is danger OF bacilli blowing
from dried sputum or feces, the dan
ger In the opinion of the investiga-
tion, is far greater from bacllll con-
tained in food. This suggests the
purport Of the investigation. and that
Is pure milk. The report has special
value, inasmuch as n new law for
milk inspection is about TO go into
effect in this state. The whole pur-
pose OF the law Is. OF course. TO Inn
prove the milk supply. both from tho
standpoint OF fats and solids and the
standpoint OF infectious bacilli
Whether tuberculosis OF cattle Is
n serious danger TO man is still
question. There are able scientists
on both sides. but II is clearly the
safe side TO assume that there Is
danger TO man. Anyhow. II Is safe
20 have clean milk, and Il Is economi-
cal TO prevent the spread OF tuber-
culosis in cattle, for there Is no ques-
tion that the disease may be trans
mitted from one animal TO another.
Scientists agree that tuberculosis OF
animals is an occasional danger to
man. more frequently In the case OF
children that live on milk than I'm
the case OF adults.
The experiments on which the re-
port Is based were made with guinea
pigs and hogs. IL is demonstrated
that the feces OF cattle affected with
tuberculosis, when inooulated into
guinea pigs and hogs, cause tuber-
culosis. Many OF the guinea pigs
died OF the disease Tuberculin tests
were made OF both the guinea pigs
aud the hogs before pure milk soilei
with feces from tuberculosis cows
was inoculated. while the hogs did
not die. as did the guinea pigs. their
lungs and liyers we're found 20 be
tuberculous. Or. Schroeder finds
that no precaution can entirely pre-
vent feces from getting into the milk
pail sometimes.
The precautionary measures that
can be used by the dairyman are linn
tied by the price OF milk" he says.
He cannot AFFORD 10 use measures
the cost OF which Is so greu that
their application would convert his
business into a philanthropic enter
prise"
The conclusion Is that dairy cattle
should be watched closely for signs
OF tuberculosis. II sometimes hap
pens that sleek. fat cows are AFFECT
ed. and the presence OF tuberculosis
can only be discovered by scientific
tuberculin tests. A COW that has
tuberculosis should be entirely sep
arated from the rest OF the herd.
the writer thinks. 20 lessen the
danger Of transmission BY means
OF the feees.
The report shows that pulmonary
tuberculosis IL the most common
form Of the disease In animals. This
Is true as well for human beings. IL
is found that "tuberele bacilli may
readily pass through the intestinal
wall and infect the animal without
causing LESSONS In the intesiiEes." "
The lungs are peculiarly subject 10
the Infection. DR.. Schroeder explains
Ia some detail how tubercle baeilli
reach the thoraeie duct and the lungs
from the intestinal tract. He says
For the benefit Of readers who
are not Informed on the subject OF
anatomy. n may be well 20 say that
the thOraeic duet Il the common
trunk Of all the lymphatle vessels
that drain the abdominal cavity and
the organs contained 10 Il. and an Ad-
dliional large portion Of the body
and that Il DISCHARGES IT'S contents
into the anterior yena eaEn, one oi
the large veins in which the blood is
returned 70 the heart The material
dlsehargs By the duet into the vein
is carried viih the blood directly 20
the heart and pumped b. the heart
70 the lung. where it IL altered
through the ezeeedlngiy hne e1piF