The morning call., 1892-11-23
more meat on his
de generally grows


l0usness Is slowly Undermining their con-
situations. The Philar eIphfa cab!e-cars are
distorting and killing scores of the strong.
industrious young men t1at are the hope
and pride of any land
But San Francisco eable-cars are built
Win special reference TO the symmetrical
development OF gripnen. A San Francisco
caDle-car dummy IS the best gymnasium on
Inc racine COAST and the eable-car COM
panies are constantly turning out into the
world class of bTawny men, which. taken
M one side and down the other are as fine
specimens of physical manhood as can be
found anywhere.
Tie benefcent arrangement by which this
Is accomplished consists in having a lever
for each arm. Here the brake lever must
be worked as often and as hard as the grip
lever.
The San Francisco Rripman as a whole
does about twice the work that a Philadel-
phia gripman does. but he uses only one.
baif Of himself for half the work
One triumph Of San Francisco cable-car
Invention is thus seen to be tWO-sided, like
tie gripmen.
Not only is the divine symmetry of its
grpmen preserved, but it utilities each half
of A gripman and so gets more labor out of
one man. This principle of the fractional
use Of labor IS easily seen to be economical
and capable Of wide development and appli-
cation.
No. San Francisco gripmen grow strong
and brawny. the seams in the shOul ders of
their uniforms have to be let out after six
weeks OF service; but they are not narrow
and one-siGed, and when they strike they
can 30 it to the right or the left
HE CALL reporter who discovered yes
teTday the symmetry Of the San Francisco
grIpman ran across phase of one-sided
physical development as interesting as that
of the Philadelphia gripman.
Did you ever notice that in suuinting
through a telescope you always use one
eye-that Is, either the right or the left eye?
II is probably abe right one.
Now If you have used a telescope or
microscope n good deal for long time,
what effect has il had on the eye you have
used?
DR.. Abrams uses a microscope a good
deal and always uses his left eye in peering
through The instrument. He says that he
can see through the microscope with that
one. He attributes 1t to the fact that
through the constant use of that eye the
muscles Of accommodation which serve to
focus the eye are more developed and &C
cOmmodate the eve more readily
Professor George Davidson uses the tele-
scope constantly. He Is in the habit of US
ing his right eye and sees better with IT, A
few months ago he found it firing more
easily with the constant use and began
squirting at the stars with his left one
j. /. Lawson Of the Coast and Geodetlc
Survey can see much more clearly through
an instrument with his right eye, which hs
has always used, and gives the opinion that
the use of one eye that way developes its
power and the ciearness Of its sight but too
constant use impairs 1t.
Others in the Coast Survey Office can see
better through au instrument with one eye
than with the other.
l.. a. Berteling, the opteian, says that
the only effect on the eye by such use is on
its muscles.
It appears, then, that one may be right
eyed or left-eyed as he is right handed or
lefi-hapded. Most people are "right-eyed,"
but some are left-eyed who are right
handed.
Can you shut one eve alone as easily as
you can the other ones Few people can. 1t
apparently depends on how one began to
squint. Most people seem to simply ac-
Quire the habit of shutting the left eye and
looking out of the right one, and so it is
more easy TO close the left eye. The eye,
closing muscles are better developed.
If one can close the left eye more easily
he viii naturally close that one when he
looks through telescope.
Almost any one Will find la experim ent
that he can read at a distance more clearly
with one eye than with the other. In fact,
what may appear distinct TO the right eye
may be indistnct to the left one.
People are right-eyed and left-eyed; the
muscles Of the eyes become unequalIy de-
veloped with unequal use, and microscopes
and astronomers are as one-sided in the
matter OF eyes as the Philadelphia gripmeu
are In the matter OF arms.