The Democratic advocate., 1896-01-04
By-Produots CT the Abattoir.
From the scientific American.

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If only the edible portions of slaughtered
animals could be utilized, meat would be
luxury and at high figure, since only
about one-third of the weight of the animal
consists of products that can be eaten.
The utilization of the waste products of
large abattOirs, as in Chicago, where no
less than 5000 steers, 1000 calves, Is, 900
hogs and 5000 sheep have been received
in single day, becomes a matter of con-
siderable importance. The market value
OF the by-products represents an enormous
sum, and the concentration of the industry
permits the utilization of small products
that butcher would allow to 90 to waste
In the process of slaughtering the OK is
killed by the blow of hammer on the
head. The jugular vein and carotid artery
are cut, permitting the escape of the blood,
which is collected. When cold it coagu-
lates. The fluid portion, containing solu-
BILE salts, is liberated 1t is employed for
sizing paper. The best qualities of blood
are used in refining sugar The sugar
contains many impurities. When dis
solved in a solution of water and pure OK
blood and heated, the albumen of the blood
rises as scum and carries the impurities
in suspension. The sugar is afterwards
filtered through cotton and then bone
black. The latter is also a product of the
abattoir, being made from calcined bones.
Inferior qualities of blood are used for
many purposes, as in the manufacture of
buttons, which are hard to distinguish from
hard rubber ones. The poorest quality of
blood mixed with other by y-products is used
as fertilizer. The skin is converted into
leather. The portions of the stomach, in
testines, etc., are separated into the parts
that go to the drying room, the portion
that enters into the composition of fertil-
izers and also that which is to be converted
into oil and then into margarine and but
terine. Residue particles of meat and fat
are collected and sold to manufactures of
axle grease, soap and candles The blad-
der is cleaned, inflated, tied, dried and
sold to manufacturers of mastic, snuff, etc.
As the bladder is impermeable no evapor-
alton occurs, hence its use also by the
perfumer and druggist for covering the
corks of bottles.
The CUTS, which are treated in a similar
manner, are glued together end to end and
used in breweries for lining pipes, so as to
prevent the beer from coming in contact
with the metal The intestines are also
prepared for gold beaters' use, in which
alternate layers of skin and gold leaf are
beaten to about one ten-millionth of mil
limeter This delicate membrane, formed
from the external membrane of the large
intestine of the OK, is of particular value.
1t is used in surgery for closing wounds
and for making plasters. Glue is made
from the coarser, and gelatine from the
finer parts of such bi-products as parings
of skins, the ears, portion of the tail,
the feet, the muzzle, the bones of the skull
and jaws and the interior OF the horns
The hair from the interior of the ears is
very fine and used in making cheap ''cam-
els hair brushes. The feet, freed from
the horn, serves for the manufacture of an
oil used to dress leather. The horns can
be heated, welded, split, colored, moulded,
etc., and initiate many well-known objects
The hair removed in making glue is burned
in closed vessel and serves for the man
ufacture of ammonia, used extensively in
refrigerating machines. Even the undi-
gested food in the stomach, hay and Indian
corn, is compressed and dried, and forms
a food known as s'Texas nut. The
young calves furnish the rennet used in
cheese, etc. The bile COX galD is used
for cleaning and in painting and binding,
Large quantities of excellent fertilizing
material are produced from miscellaneous
offal The same bi-producls are obtained
from the hog as from the OK, with pepsin
and bristles in addition.