Weston weekly leader. [volume] (Weston, Umatilla County, Or.) 1878-189?, 1885-02-20

of these pass to the back, where
they fern the spinal csrd, and this
extends upwards and passes into
the brain, as you see in the sngra-
wing. Thus every part Of the body
is connected with the brain through
these minute telegraph wires or
nerves. They carry messages from
every part to the brain. If you
touch your finger, the message goes
from your finger to your brain
along some Of these nerves. If you
wish to move your hand, the brain
sends message to the muscles of
the arm and hand.
But no matter how many nerves
we had, we could not feel anything
if there were not mass of little
nerve cells at the ends of the nerves
in the brain. These cells are like
the batteries in a telegraph. A
nerve cell is a little SAT, and SO
small that l 800 Of them would only
make q row one inch long. With
in the cell is little point called a
nucleus, ands~this is the center of
its forces. At the surface of the
brain there are more than 100000
900 Of these tiny cells. Those
shown in the engraving are highly
magni6ed.
The back center of the brain is
called the Sensus, because it is the
chief office for receiving sensations,
aud messages that come from all
parts Of the body. the front center
is naned the Mstus, because it is
the principal Office for sending out
messages which make the muscles
move.
Now we can understand how the
brain does its work. Let US sup
pose that there is an arrow Eefors
us. A picture of this arrow is
formed in The back of the eye, as
shown at the letter A. The bun
die of fibers called the optic nerve
take this picture to pieces and carr!
it, first to the optic lebes, then tt
the sensus, across to the motus
and then forward to the cells o
Form and Color, where the arrow
is marked arr. When the pictur
, has reached these cells, then we Sc
the arrow before US. So it is tn
cells in the brain that see, after al
we now know what kind of thin
+ it is we are looking at, and th
philosophers call this action of III
mind a Perception. A messas
= now passes upward from one ee
= to another. 1t reaches Memor,
and at ones we remember what a
!. rews are used for, and we reflect {
y reason that by reaching out 0,
i hand we can get this particular q
. row. The message goes still U
"a ward and over toward the back
RI .hahrain. It awskens Desire, al
i we feel that we would like to sho
the arrow to some one. or to I
l. something with it. This stirs ,
Z the cells of Volltion or the wi
80 and they send down q MESA
. through the sensas to the motu
80 and down the front columns of t
ba spinal cord. This message pass
out on the motor nerves to the mt
Gle cells of the arm and hand.
dx makes all these muscle cells CO
~ tract or shorten, and thus NOV
lie the hand. Besides this, MESA
Ia came at the same time from Fol
and Color and joined the other
ITO the motus, and THIS message t.
IN the muscle just how far and viii
10 way to move, in order to get
mt arrow. The messages travel aio
RI, at the rate of 200 feet in seceI
n The shape of them is made up
tiny waves, the 60,000th part
vo an inch in breadth, and these wa
on differ from each other in sha
Each cell vibrates with these wa,
t,e and makes the cell next beyons
of vibrate also. So that all the tt
;s while we are thinking CIR fseli
the parts of the brain are in tre'
,ba lous motion.
h;s The brain works, and it also {
M tired. We rest tho brain when
sleep. But sometimes some p
~. of the brain tries to work with
an. the rest Of the parts, while we
+ Of sleeping. This mixes things
om without much order, in the form
l;ar dreams. The regular circuit.
the brain are more or less in 81
tho and the messages wander here
M there, they get stuck togethe
tho very odd ways, and often prese
old bundle of contradictions.