Evening star., 1897-04-01

II you will look at the above picture very closely
you will that 1t is taken from section made
by saving right through the temporal bone OF the
skull which contains the structures that go to
make up the ear. You will that nearly all
the parts of the situated within this beny
mass. and the bone being hard substance. does
not yield when the tubes become in:anied ana
swollen This accounts for the intense suffering
that gees with diseases II You feel right
back OF your ear you will notice enlargement or
bump the bone. and want TO tell you that TINS
bump is poruus and is connected with the middi"
ear cavity by several channels When the middle
ear becomes diseased the disease often extehis
along these channels ard this cavity. where an
abscess FORMS and the disease is called mastoidtis
The Ear and the Brain.
Apy disease that attacks the middle ear or
mastoM cavity Is very grave and dangerous pe
cause these parts situated SO close to the pra
Inflammation In these structures is liable to extend
to the iruin aud every year disease set Up In The
middle ear causes the death of 10000 people in the
United States alone. 50 serions is disease OF the
middle ear considered account N the nearness
of parts of the BRAIN that life insurance companies
refuse to insure those persors 50 af1ict'n
II was such disease that destroyed the life OF
the late Roscoe Conkling ard the present Emperor
Of Germany 8 cratic and peculiar actions at times
are attributed a chronic disease Of the middle
ear from which he suffers.
What Constitutes the Far.
While every knows that situated inside OF
the head Is the organ % hearing, few understand
what this structure is really like that grasps the
sounds of nature ard hoIds these expressions OF life
and :tcton in its embrace until there is nodded on
the substance of the bra,n exact copy OF the
sound as is nol,l4l the Of putty to the inner
surface of the hand which Erasps 1t firmly. Ihs
fixing of sound upon the brair Is called hearing
The various parts taken together which grasp. re-
peat and hold the sound are called the ear what
!. usually STYLED the ear is but projection to
guide sound into tie organ of hearing which Is
pearly two riches inside tie head. The various
nar1s of the ear are shown clearly In the large
engraving. where they are seen to consist OF the
external ear and tube TINT leads from 1t in
war,iiy to a curtain that entirely blocks the end
or this tul,r-the ear drum. The drum and three
| ,itt,e ZONES that connect with it and the cavity
Immediately behind the drum constitute what Is
called the middle ear Those various channels,
some resembling half circles and other spirals,
are filed with fluid into which dip the nerves of
hearing and these parts. taken together ere
called the internal If you VIII take the
| trouble to look you will notice that there is
tnbe which passes from the cavity Of the middle
ear down into the throa;. This is called the Gus
tachian tube and 1t carries air into the deeper
ro,esses of the ear Without air in the middle
ear no sound can be heard. The car needs air to
convey the sound TO the parts which imprison II
and repeat 1t the brain. the same as electricity
| ,eouires wire upon which to travel when 1t Is
sent in the form of a message
Eye and Ear Compared.
The eye is but looking glass with a cable com
posed OF nerves passing out of its back surface
and reaching into the brain. The mirror Of the eye
takes up pictures of the objects that are presented