The Daily Ardmoreite. [volume] (Ardmore, Okla.) 1893-current, 1907-08-22
THE MAKlNGS OF GLUE.
No. . Definite Organic Substance, but
Product Of Transformations.

Glue Is not definite. positive or
ganlc substance as most people sup.
pose. Checklists tell Us that glue does
not pre-eXlst In any animal organism
except under abnormal conditions-ns
IN disease Is the product OF sev.
eral transformations.
The FIRST Transformation takes place
IN drying the hide. II a green hide is
boilei after being prepared In exactly
the same manner by lining, etc. while
Il IL yet green, an entirely different
proiuct OF less consistency n secured
than by drying the hide after lining
and then boiling
The second transformation seems 10
take place in boiling the material. prob
ably from action of the heat. The
third transformation occurs In the dry.
Ing Of the Jelly secured In the boiling
operation.
Stlll another transformation occur
In the drying Of this Jelly into actua
glue and this series OF charges doc
not end here. for glue dissolved H.
water and again boiled sufficiently
long loses It's form once more and
will not gclatinize. but will remain IN
liquid form.
Glue yielding substances are pro
duced by the animal economy from
protein bodies, albumen, fibrin and
casein. The impossibllity OF prcserv-
ing for any length Of time the stock
from which glue II made renders IL
Necessary 90 adopt some system In
choosing and preserving II until sufi.
Client quantities sre collected without
fermentation or decomposition. Hence
tire refuse from Nnneries consisting
Of the clippings Of hides. ears End tail
pieces of OK, calf and sheep and from
skins of other animals arr preferred
because they can he dressed with lime
which removes the hair and acts as an
ant!septic.
The ordinary bone stock glue Is made
from the larger bones OF cattle and
horn piths, collected from different
sources. A large quantity OF waste
bones Is accumulated in the prepara.
non Of timed provisions.
II these have not been overheated
and are In good condition a considera-
BILE amount OF glue can be obtained
from them. The bones from the head.
ribs and feet give q better yield than
those OF the thighs and legs.
There Is also the hoof glue. which Is
made from the hoofs OF different ami
mails. Then there is glue made from
sinews and feshings. and also a Crude
known ms rabbit glue made from the
skins Of hares and rabbits, This glue
makes a good water test, but shonld
never be used to cement a belt. There
is large quantity OF this glue made
In this country. and a person not very
familiar with II could easily be de-
ceived.
The age OF animals yielding glue
stock has nn important influence on the
product While from younger animals
the production as a rule is OF a lighter
color, more abundant and more easily
obtained, 1t contains more chondrin.
so that for solutions OF equal strength
those from mature animals will be
found 10 he Of the great consistency
and the glue more solid.
Then again there is what is known
as the pig stock glue, which Is made
from the feet OF hogs. Next comes the
fish glue or isinglass Its varieties
are numerous, and thorough knowl-
edge OF them can only be obtained
when one is personally acquainted
with the different factories and stock
from which they are made.
The best OF this material, however.
Is made from the sounds or air blad-
ders Of the different species OF fish
The air bladders of the common stur-
geon and other fish caught In northerly
climates make the best.-Wood Craft.