The Richmond Virginian. (Richmond, Va.) 1910-1920, 1916-02-29

orunaent 2Disginct Sound Is
j - ~ Sloonlishs--why ~stars
- osens phen Baow Is struck

- ~ Moon1igha--why 'sStnrs
- Usen" when Baow Is Struck
sn Hssd-
Am. Feh. 2s.---Many brave fell
NO loft this countr. In the priae
Snhood are bound TO return sur
2sr frosn SERIOUS defects. but for
4 Sfstv clever devices are being per-
X 21,iS a render their lot easier
q SI5f7SI 80 ve have looked upon blind
I - ~, appalling aff1iction. but all
II - dieooyeries have been made
& r. W1il DO much to improve the
Sdikion or those who do not possess
n11A1 syesight.
xAofo 10 every hope Tor pehevins
kS& ep4enos shortly viii PROVIDE new
~ rather new means for see
q Much progress has been made
fhas object In view.
- roe1ua. marvellous a. IL II. II
B ~ . highfy nervous. special kind
~ snIlu. There are creatures whose
SI1Go ST sight consists of their whole
& II. Hence there Ii nothing I'M
SaAas in the view that eventually
4 - human uarin may be trained to re-
I = impressions OF light. and so to
- - the organ OF sight
'ssE T. - = being perfected marvel
- nnstrument which enables the
1 16nA q detect light by means OF
;S1IIo ~. BY III aid q blind person not
IN mfx an recognise Hight. but can To-
II and even measure it, inten-
Seserium In Used.
sEyhn instrument is doubtless the
SAaa1Mning Of an important series OF
- g. -
n N1sna person In the position OF ops
Y nl1ko n partially blind. that is, who
~ ahae 10 aetect tina presence of-light
Teesrs long. Kst1 hoped. that the ok
31ans Instrument will be greatly I'm
psovsd. although in any form 1t win
n nexpiy be the starting point on the
Rad to . great victory.
s There ID q special substance, whion
- II electrical resistance altered by
ainahk: IL IL due to this substance that
n = possihle to send photographs
HfnM me place 10 another by means
aIssuf n elsctrtcai wire. In the new In
SA0krunnont the selsnium operates
y INA cf telephone.
II PAIR Of these telephones are plao-
B - Is the head, and are attached to
4 1nxxness mo sound will be hearh wnen
{he individual IL In darkness. Az soon
n III X35Y HKHN 1AkiB GPQh AS0 SS-Ns~-
/: = neese 10 heard, which varies in loud
4 1nonn according to the intensity Of the
Thus moonlight makes dis
Tftnc& noise, while considerable roar
M sound 10 heard al the effect OF
( eumlight
n practice 1t has been found best
= arrange the apparatus 80 that the
Ie1nAteot light produces silence. but
to iaas intense the light the greater
.-<ho noise Thue bind person lifted
with this apparatus can easily tell
whAn he passes into- a shadow. IT In
4 Z room. Ne can tell when he is pass
Ing : window. Moreover. the passage
u any body between the light and
tn4 blind person will greatly affect
the Instrument.
Shows Degree Of Light.
Many wonderful effects have been
obfalned. At present all the tnstru-
s 1nent does IL to inform the blind per-
i eon whether he 10 In light or dark
naee. and the degree OF either This.
however, In q long stride towards the
solution Of the problem Of seeing with
cmk eyes.
a fortunately II In possible to afford
rid more easily In the case OF those
"a Tho are deafered SIS a result OF ex-
4 u1oalons and SO on. 1t IL far easier
10 cope with deafness than with
Blindness, particularly az impressions
a sounds may be received Through
ofher parts OF the body than the ear.
Science has already done much TO
0npN With DEAFNESS by providing hrti-
4tc3a1 oar-drums Very delicate MIC
fophonss can now be obtained, which
& oEea&1y magnify sounds. rendering
Il fhon within the capacity OF persons
~. xss4 Affftr1tffV
QAero are instruments in use to con-
- sounds by way OF the mouth in
aeond Of through the ears
Hearing IN merely the result OF vi
3taflOns Of sound beating upon the
drum Of the ear, this being communi-
4onxod 70 the brain by a series OF
a norvos. Deafness is a defect In this
Sneas Of communication. Now. a
4 x3nraon can hear distinctly by means
a III teeth: this can easily be proved
4 IN p1acing one end OF q pocket-knife
m the mouth and the other end on a
HaaaA.
n similar way. one may COMMUNE
4 eHka sound waves to the brain through
s6nr other bony substance, even the
6kuI itself Starting from these facts
s3 apparatus has been devised which,
VIVIAN attached to the head. will act
Met the sound waves. passing the
Memx1ona to the skull, and thus con-
SSy1ng the information 20 the brain
ksoA lies beneath
why One @Sers Stars"
The fact 10 that we do not see with
4 ~ eyes hear with our ears. smell
IN our nose. taste with our tongue.
xoel with our skin. II is the brain
18th acts in every case. and the
~ useful organs mentioned only act
suitable apparatus for the coilec-
and transmission.
IN Zach case certain sorts OF vibra-
- are set up, these passing by
6aM1 Of the nerves to the brain.
~ aim Of science now Ia to find
Mods Of communicating these vi
= vary Interesting IN this respect
H9f1co how persons suffering from
>o physical disability frequently
sensations In parts that have
~ axaputatcd, the explanation be-
thex the brain has bes acted
y "A somewhat allied fact is that
1GW Oser the head will give sen
~ ~ Hight. vibrations being set
- transmitted to the brain.