Bismarck daily tribune. [volume] (Bismarck, Dakota [N.D.]) 1881-1916, 1908-09-12
OUR ERRATIC! SENSES
Some Of the Curious Facts Re-
corded \! ] d by Psychologists.
THE PHENOMENA OF SOUND.

5a8tt7e S3ErS B MAI. Eys<stEys- *f &s E3ls$
THE PHENOMENA OF SOUND.
saueals Of Mice and the Lowest Notes
Of an Organ Are lnaudihie to Some
Persons Of the DELI
cate Sense Of Smell.
Ii you shade the eyes, you weaken
your sense Of hearing. Try it with q
watch and the result will surprise You.
Ii you sip glass Of cold water, you
will increase for short time your
power of vision. If you All the mouth
with water, you will greatly strength
en- your sense Of smell.
Many similar curious facts about the
| senses are told by Psychologists.
| There Is a multitude Of sounds made
In the world every day, for instance,
which we cannot hear, however close
they may be. Every sound must last q
certain time in order to be heard by
the ear. If it is an extremely feeble
sound 1t must last quite two seconds
or we cannot hear it. But, no matter
how long It lasts, we cannot hear 1t II
1t is q very low or very high note.
Extremely small animals emit such
high notes that we never hear them.
Some people cannot even hear the
squeal of mice. The lowest notes Of
an organ are mere rumbling noises to,
most people, and some cannot hear
them at all. 80. ga
It is by means of the external ear we
i Judge the direction from which sound
comes. Stand facing a clock, place
your hands In front of your ears, with
the palms turned back, close your eyes;
you will then think the clock Is behind
! you. ...,. ..s::..l..s !.
4 why can some animals smell more
I keenly than others? 1t is question Of
the space within the nose capable OF
smelling. In man this space is very
small-less than one-fourth Of square
inch. In dogs and most mammals It
is very much larger. The porpoise has
no sense Of smell. Then comes man.
and also the monkeys, whales and all
kinds Of fowl and birds, with very
feeble smelling power. When PEG
bodies they make mistake. Lions,
tigers, wolves. ETC., can scent them at
long distances, but vultures depend ON
their sense of sight - -
: The sense Of smell is exceedingly del
icate. If one ounce Of musk were d.
> vided into 10000 100000 parts one OF
these infnitesimal parts would be per
, ceptible by the average persons nose.
) On the other hand, many people have
7 no power to smell some substances.
such as mignonette. vanilla, violets and
!. pcussic acid. s.t$3 n&
: Taste is curious In the fact that diff
D ferent parts Of the tongue appreciate
different f1avors. At the tip we per
ceive sweet tastes best, at the sides
acid tastes and at the back bittel
9 tastes. Substances must be dissolved
. In order to be tasted, and dry morse'
g In dry mouth has no favor. This q
8 why smokers cannot taste well. Theil
o mouth glands. which manufacture So
t Iva, are paralyzed by the tobacco
b Very hot or very cold things are scarce
e " tasted at all. If you want to get
r the best flavor from your food it mus
J. be at some temperature between 81
d and IS degrees. -
i Every one knows how easily thu
/ sense of sight Is deceived by optica
q puzzles But curious deception d
g Ipracticed ~,on us all throughout oul
= lives, and no one ever perceives It
$ There is blind spot In the eye where
n the optic nerve enters. In everything
u we look at, therefore. there is a Httl<
, gap where we see nothing. But no ont
is aware of it, because it has been thu
case since we first opened our eyes.
a In estimating distance we Judge By
2 the experience we gain In walking
! The eye itself cannot judge distances
: a near hill and distant mountain
a will each form an image Of the sama
e size on the eye. We know the noun
. tain Is farther away than the hill be
cause there are more intervening OBJ
|, tects., But we can often make an esti
+ mate Of distance, in curious way, By
q the muscles Of the eyeball. In ordel
!, to. focus near, object we must bulge
. the lens. and to focus distant objec
; we must 1atten the lens The amoun
Of muscular labor used in doing tfii
gives US an idea Of the distance Of tn
object.
:. "A man seems much thinner in darl
:. than in light clothing. All black things
= in fact, appear smaller than whit,
things Of the same size. An image re
!, mains on the eye for some time afte
= looking at an object. If the thing 4
very bright the image remains a lon,
time. and sometimes If you look direct
" at the sun You win carry the imag'
bf 1t around with you for days.
Color blind people have defectiv,
musical sense. They confuse differen
70 notes. and, curiously, the confusion o
q green blind people differs from tn,
Y confusion Of red blind people. Color