White Bluffs spokesman. [volume] (White Bluffs, Wash.) 1907-1938, 1927-08-12

and is marvellous insulator, more SO
then the glass Of Leyden jar. This
inside Is called nucleus-which
means the center Of importance-just
as the first ten cents which you put in
your bank isa nucleus, or center;
around which the rest will gather.
These nuclei watch over the nourish-
ment of the cell and Of the whole axis
cylinders, and they alone can make
cells grow.
'"The end nerve-cells are the most
raggedy things imaginable. They are
so like a tree with endless little
branches that they are called den
drites,' which is only the Greek for
tree.
'The nerve-fbers, or neurons, may
be yards and yards long. The dendrites
are just like the threads Of a web.
They grow from nerve-cells in between
millions Of others.
"As the main trunk gets farther off
from the main station, Of course it gets
smaller, just like the top branches Of
tree. It ends in the tiniest branches
1T may be in the big toe or the little
finger, or heart or liver or eye, or any
where.
Here Is herve-cell and Its axis
cylinder, or trunk, which is carefully
wrapped around as soon as 1t leaves
the skull, in sheath that protects it
and fnsulates it like the rubber around
the copper wire. Remember 1t is tied
up with millions more in bigger bum
dies when it starts. (See picture.) Here
you can see it branching out to end in
the big toe. Perhaps it is the one that
hurt so, when trod on your toe.
Here is substation warning cen
trail that mosquito is biting a thumb.
(See picture.) Central is telling the BIZ
biceps to pull the thumb away.
eve are talking very learnedly
about nerve-cells and protoplasm, but
really we do not know why nerve
cell feels, and sees, and tastes, aEJl
the protoplasm of muscle-cell only
contracts. We do know that anything
which makes a chemical change in any
thing starts 1t working, and that that
change Of substance taking place
starts a current instead Of starting
simple shortening of the cell, as 1t
does in q muscle-cell.
s"The ends of the sensory nerves in
the brain spread out exactly as do the
motor ones in the toe, for instance, and
they put their ends so close to motor
dendrites, or branches in the brain,
that though they do not exactly join,
the current leaps over from one to the
other
Axis cylinders Of both kinds of
nerves break up into 6brils. They
form a network (Latin, plexus) In
which each fibril ends In plate, or in
8, cell of some kind. These plexuses
are great safeguard, as, If one fbril
Is blocked or breaks, the cell can send
Its messages round by detour.
1.-THE cell can do other things
through it's nucleus. For instance, it
orders all refreshment for the axis
cylinder. 1t can also refuse to do what
the sensory nerve asks.
"There is another thing to remem-
Der before we leave The Nerves. It
is this: Nature makes every possible
provision for taking care of the deli
cate cells; the finest of fibers, elastic
and strong, are woven round and be-
tween them. Along these run tiny
pipes, with food and oxygen. Special
material also is stored there for maxi
ing nuclei and refreshing tired-out
cells. This meshwork Is called 'neu-
roglia-it is the scaffolding or frame
work Of the brain or ganglia. But re-
member this: just as muscle-cells,
nerve-cells may be so badly over
worked that they can never recover.
Go on long enough abusing and using
tired nerve-cell and it just dies. No
amount of rest will bring it back again.
That Is why we say: All work and
no play makes Jack a. dull boy So
scoot' and play 'instanter.'"
"a by the Bell Syndicate. 1nc.)