Oxford Democrat. [volume] (Paris, Me.) 1833-1933, 1869-10-01

So marked an extent in the fore foot, DC
cause ia the hind foot we generally have
the crust Of an equal thiesnessa all the way
round The general thickness ofthe crust
i. about a 0parter of an inch; sometimes
il increases TO very much more.
The sole is made up of fibrous and
horny tissue. but it has more of the
tibrous and not SO much of the horny as
the crust. II is arranged in different
LAYERS, and outside the crust islike whale
bone, while inside il lies in lamine, and
can be easily raised.
The next structure about the foot is the
frog. which is made OF iibrous tissue of
finer organization, mixed with gelatine,
which makes soft and elastic surface.
Its most essential Office is To act as a
cushion, 10 relieve the conclusion when
the horse is nj speed. anil protect those
tender. soft and sensitive organs above
the na, icllar ioiut. and al the son tissues
which line the hnof.
We have another important element
about the sole of the foot, and that is,
the bars. These are simple prominences
extending from the heel towards the sole.
They are made of almost precisely the
same structure az the crust. The office
of these bars is to act as guards to pro-
lecr the crust from crowding inwards up
on the hoof. when heavy weights are
thrown upon it.
have gone over now the bony struc-
ture of the extremities, or those solid It's
sues that GO to give weight and support
to the body, and they not only give
weight and support to the body but they
form the solidparts oiihe joints. and they
form attachments, to the muscles or liga'
meut>. that the motive power may bc ac-
complished. will now call your atten-
ton 10 very peculiar kind ofmembranc,
the pcriosteum; that surrounds the bone.
This membrane has the peculiarly ofgiv-
bone. II is Il vascular membrane, TILED
with blood vessels, and most ut the sub
stance OF the bone is derived from it. 1t
+, the membrane which .naSeS bone. and
if a hone l. broken ar bruised, il aids tn
repair the injury Break off little piece
Of this periosteum aud graft it into the
shoulder of horse, and il will become
hone. cannot compare it to anything
better than the bark OF tree. You know
the influence the bark has ON the growth
ola ;ree If YOU make girdle round
the bone. removing this membrane, the
bone dies. ~ the tree dies when YOU CIR
de il. This membrane has also every
thing 10 do with regard to the formation
OF tumors and diseased structures on the
one.
We have now the separate bones; the
next thing is to get them together; aud
there Is something very peculiar about
that, with is worthy Of some considera-
ble attention. Almost always when there
is a Joint to be formed, il is made up OF
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