The Iowa plain dealer. [volume] (New Oregon, Howard County, Iowa) 1867-1895, 1884-11-06
WONDERFUL INSECT EYES.
Where the Gin III sight IL Most itch.
~ BESTOWED.

Physicians call attention to the In.
creasing Instances OF defective or Inn.
perfect Si2ht occurring in civilized
countries. and a,,riuu,e II To the yari.
Gus conditions OF moaern lse---th, over.
work Of the eyes in childhood. tho
study " books In small print aud the
hah.t ri reaoiag bs Imperfect light.
anu many other causes. II appears
certain that In the matter II esesl-h,
tho savage has usually the advantage
OF the civilized man. The gif, OF sigh,
i one very an,qaativ distributed among
tho animal world. Some creatures on.
Joy II 10 excess, Ike the eag,. others
are totally deprived # IL like the earth.
worm.
In many other distances the sense oi
sight II to, actually lacking, Is oN.
aemeis Imperfect, As in tho ease of thu
MOLE Insects arr in many cases Tar
more richly endowed with yves than
even birds or beasts, The little creaiur,
called tho whirlwiS fGvfsaaS Ea'atgr).
Which skins a,ons on tn, surface III
standing water Is iuraisaea with Il
double set ot optics. tho upper portion
Of the cyes lAl,Sd tor seeiag in tue airl
being placed in tho upper portion of Tia,
head, anu the lower portion of the eyes
Us,sed Tor seeing in the waterl i'll tho
lower portion 81 the head, thin a.xls-
Ion separating thu IVA
Spiders possess six eyes some spe-
cies eights cnat. aedes twenty, while
Tho Dyes -. many insects laecs. butter
nSe>. dragon il.esl are composed al n
number If facets. each eye being. in
fact custer Ut eyes DR. Hook
counted ll,u>h If these facets. in the
eye Of dragon as, &ad leoaw eahocS
found rs many as ls,Sla in anoiaer
specimen ul tho same species. The
latter aa,aral>, aa>psoa ono Of the
eses III u dragon liz 81 as 10 be able 10
see objects lRrunga ii as means Of a
microscope. AMI found that h could
view the s,acp., III church 299 ieet
high anj 100 faes Ii, M tho place aere
Ae stood, NJ coa.a also distinguish ii
the aoor of \ house, ut the same dis
tsnce, WAS open 1T saut.
k.sas' eyes diminish as well a. mal.
,ipls objects. a> fa,et discovered 10y
PERFORMING n similar experiment Ia
thu NJ Lee<sweEases, IL soldier
viewed tas>sgSa Il represented an army
Of nigmloS. The aaae og 4
Thousand lamps" Bind or i'm, .sgl, O..
~ sighted aUmsa beings may think
with ,aNy 4 the oeaalllal pro, i>.ons III
visual or.Saas bestowed ~ nature on
some II her sassauea; and yes many
CREATURES Ike happily With but small
share Ut the blessings Of sight In
some If the insects who possess the
largest share of visual organs some
other sease~~tAsse, aearin- or touch
il deficient Huber believes their sense
Of Gotta hearing and taste To be iaape:-
iSss.
Tn Tho other hand, tho blind earth
worm Msl retreat rspldis into its hole
II TIC light ~ sanase Is thrown upon
Il. il s@ase of hearing or smell warn
in ii Ut the approach If the danger /,
c2aaot seq \ bats senses of touch,
aesg.ag or Smsa are 80 acute tia, /, de-
psaas AsS>c IN The ald III is eyes. Spal-
iangaai tested this ay the cruel expert
MN, of destroying tue sight Of several
! bats AMI thea setting saem irse> In
their II, III saraa2n the room they
asos1va .sen The smallest .hseaa placed
10 obStraes ;Aesc WAY, Ls,rcilse, the
French naturalist, states TIA, there Is "A
species 81 ants watch are ea>lrvly blind.
but pursue the Same moe of lie Is
,Ae.r sighted aGoslren. -~.oaaaa u4aos.