The Cheyenne daily leader. [volume] (Cheyenne, Wyo.) 1870-1884, 1882-05-10

ing infected ones, strongly pronounced
tubercular diseases had set in. Spleen,
liver and lungs were found filed with
tubercles; while in the two uDinfected
animals no trace of the disease was OBJ
served. In a second experiment six of
eight guinea pigs were inoculated With
cultivated 6dcilli, derived originally
from the tuberculous lung of a monkey,
bred and rebred for 95 days, until eight
generations had been produced. Every
one of these animals was attacked,
while the two uninfected guinea pigs
remained perfectly healthy. Similar
experiments were made with cats, rab-
bits, rats, mice and other animals, and
without exception, it was found that
the injection Of the parasite into the
animal system was followed by decided,
add in most cases virulent, tubercular
disease.
RABBITS INoCULATED.
In Increases thus far mentioned inoc-
ulation had been effected In the abdo-
men. The place of incubation was
afterwards changed to the aqueous hu-
NOR of the eye. Three rabbits received
each a speck of bacillus culture derived
originally from a human lung affected
with pneumonia. Eighty-nine days had
been devoted to the culture of the or
raVfun, Tha fnf.ptal rahHfta raniIly
lost flesh, and after rs days were killed
and examined. The lungs of every one
OF them were found charged with tuber-
cles. OF three other rabbits, one re-
ceived an injection of pure blood serum
in the aqueus humor of the eye. while
the other w were infected, in d SINH
lar way, with the same serum, contain
ing bdcili, derived originally from a
diseased lung, and subjected to 81 days
cultivation. After % days the rabbits
were killed. The one which had re.
ceived an injection Of pure serum was
found perfectly healthy, while the lungs
of the two Others were found over
spread with tubercles.
OLher experiments are recorded in
this admirable essay, from which the
weightiestpractical conclusions may be
drawn. Koch determind the limits OF
temperature between which the tuber.
Gle bacillus can develop and multiply.
The minimum temperature he finds to
be S6o Fahrenheit, and the maximum
1U4o. lie concludes that, unlike the
bdcilluf dnthracis of splenic liver, which
can flourish freely outside the animal
bodo, in the temperate zone ANNA,
warmth is necessary for the propagation
of the newly discovered organism.
PARASITE IN THE LUNGS.
In a vast number Of cases Koch has
examined the matter expectorated from
the lungs of persons affected with phth
isis, and found in it swarms of bacilli,
while in the matter expectorated from
the lungs of persons not thus affected
he has never found the organism. The
expectorated matter in the former cases
vas highly infective, nor did drying de
stroy its virulence. Guinea pigs infect
ed with expectorated maCter which had
been kept dry for two, four and eighI
weeks, respectively, were smitten will
tubercular disease quite as virulent a:
that produced by fresh expectoration
Koch points to the grave danger of in
haling air in which particles of the
dried sputa of consumptive patients
mingles with dust Of other kinds.
1t would mere impertinence on my
part to draw the obvious moral from
these experiments. In no other con
ceiyable way than that pursued by Koct
could the true character of the mos
destructive malady by which humanity
is now assailed be determined. And
however noisy the fanaticlsm of tn,
moment may be, the commo sense Of
Englishmen will not, in the long run.
permit it to act cruelty in the name Of
tend eruess. or debar us from the light
and learning of such Investigations a'
that which Is here so imperfectly de-
scribed.