, 1874-09-20
Sparks Of SCIENCE.


A Ts1H1,SF rea1icr asks US for history Of tho
t,,nefn1 rnosnuito. ".s vo a,e com,clled." be
...,a =; IL. i..... ...o ,,,,. +,,;a ,,or+,om,n or
1-,o ,' ~ 40 49, ~ ~. sa -:et,.a W
latiJ considerable attention theso fot nights, VIZ
should liac to know something about him. One
OF our family suggests thcro is something de-
,non;oc,1 il, hia ;s,;tiou ns eyincetl by the fact
t,,t ,,,,o. a. .,,rroror novora HI, tao, will,
'' 1880 ~
mosqulto-ncttlnS, sae 1nsec1s plant LUCK paetciS
OF music against his elr, Us though in rage
that they cannot reach their victim. Some thiuk
},,av oro a}trocted bv 1rht however this raay
,s,,s.s H.. .no 1,,ra ,,+r..taa ,,x tLa
oo' oeIo'o 't1os a1o AA0Ao "''41 ~ -
smell OF humanity, Tor you HEY uA97 lamp III
one room, and sit in dark room yourself, and
tl,e demons will leave tie licht to fasrcn on to
~, u
;,;a.x;n,;n,,,,-
Luz Aa'ne nios4'nAo 20 4n4A-e4 u'1nA' ~
piled, ip this aud Some other countries, 10 safl-
GUS species Of CulcI, or Gllat. Tho term should
be restricted to tho Cule1 Mosquito :; bu. the Or
,,;n,x,, ,,,.o~,or mi m. of coursc nause IN
o4u"'s oooo1 w. w. Nv, -
make fine distinctions, anu every species OF enat,
+ror1,}oaon,a or ntbervise that comos under the
,an+,1- a !. corofnvs}, co1Iod a roosnnito
popu!a1 ese, 10 ete', >anoa .4 aaa;ea1
WHATS, oi WHICH, tutio "to ta@t3 cfee.so' 81
iouno 10 I'll pnIls oi lno "ol'1. S'e' ~ .uo nv
tic regions. The traveller in Iceland complains
Of their liaarrceabe attentions, and tells Of q
ccrtp;,, lake on tho island. on whose banks thov
swarm in snch dense clonds TINT neither man
,or ho,ut e,n rot,;,, liza many yoinutea arnnnp
noi oeant e1A 1o.AAh Aite 1 a1I ' ' h
them. iorses 1hat nave ooeH Aeeutese4y p1ouBus
to the spot have, IN frequent instances; peen
quickly blcd to death by tic myriad lancotB
t,r,,st into their ya;us 1t once by these vicious
nud vornciouH inscct-s11rreous. In parts Of Rus
.:ia ond Ta1Iand t1,av ara m ticar-l;ke in dispo
.e'I'" -.1 fo...s;J.,,1. .u,,.,aa
s'tloh aan caFfy sucH toinaaolo lna aeapuns' 'os
u d!at eca1cels au5 Paotece4on a'st.o ss ..%t
lhe laacnls re i.eIo .i .v ~ M'.t +Io
rene1Ias w tehens .o1 a 1uu IL .o,t, s
,ornent u hson ;",I nouu oins" "o, tlo
localities IN ooatn neisa a.u eno
amazon ana 1ts ltioutarlesi H.. s@ss ~ ~ ia,
oeteu o1i''1aotno!e ,, tIe. 80; ~ -r,..+ tr;a
1heuee nnu nea.aple 're.t - a. t.sat. .,oar
Nistt!leo nat.Hea " s nonI .es 49, ~.
nisu @ tnsi ooa..1 1 t;'a; l,a,1a ,-y;sL 1,,,.t ne
!nches oeep' aio 'uciA nI'' "AA~4 1'A@'s ~
4eic o't, s"aca.ea ~ oauu*a ,,o,or;..
1no taa1ale graz us iuosto W:1' a,.! ns.
eggs oH tlie eu,4aoe =. s1asnA ". ,;s tso
raa,., - E,'t ents ~ s' as IIer,,nn
"ooa 1Ascc1s ~ nof'o
Placing Ecr fsoa: cgs on piece o. noaung atlf.'
srax o. tn2s W. ~ na u ~. atr m ~,
az tie uaicr and crnsaes III. hind nsir 60 a. 10 look
lika the ca,tul lcttc, x She tl1cu druo4s rather
long and slintlle-sharel esq aud plaees 1t upright
with the base downward In tile angle of the T. Another
sg quickly rla1ea ~ the Fe o. Ing hnr m o
lowsu os otne's a. a. ., "n -. s is, ~ ;,,a
n.s x ~ ~ srr. are fnrr'r'1 mi, b0,t-liku sa,,+
and are .hI ift to oat on tie s...:e OF tho vster
These little egg boats quite plentiful III the
er time, anl any nutubgr can be taken fur the p'1r'
pose Of Their SHAPE very much fessm-
hiea tnat OF me c-boas nov IN us aao' Ae w iis
poI,, r, ~ & ; ,mn,tIr Eycn II the cintent,
~, xss.. hc nauref fr'nn bc,yht into the 1ocI
thc lits bouts tlat At ore to tc surface like SO many
corks aEl each. it rises. assumes its proper posi-
ton.
When the 1:rva ls rcad7 TO leave the e:5. 1t
pushes OH the lover enI, Which opesls Ike Il
little round tsap-loor, aiti let's the la1fa-2op-
DIarly called ''wlsSlc7 out into the water
This TlgSler III tho otluest Little nsA mag
Unable. 1t has long body. q large head, and q
forled tail md jumps aud jerks through the
wator with swift ziS-zaG motion. When 1t
needs to breathe, it comes up to the surface and
hangs head downward, for It's respiratory organs
tcrnli uate i'll pipe uttached to the last segment
I tho body. and. thrt1st'i!g tins above the water
tue airs inhaled through it. The larva feeds
upon microscopic insects and PARTICLES OF vcgct.-
ton and earthy matter, and this Ii OF great ser
yice III purifying standing water, which WOULD
otherwise breed malar1al diseases. SO the mos
quito is not without its use i'll tho world Lin-
ncra loug ago Showed that, II t"o barrels OF
staGnaus and impure water 10 rlaccd s1de by
sido, and one be covered with gauzc aud the 9th
or left exposed, the second will coon be full OF
wiGglctB aud emit no unsavory oaors. Willie tho
first, secured from tho approach OF mosquitoes,
will shortly become frank nnu smell to
heaven"
Tho wiggler changes it's skin three times in
the co'srre of fortnight or threo weeks 1t
then enters tho pupa state, and ID transformed
j" both shape and condition. lts body Il short
e1,ed, rounded, aud bent nearly double. In this
Htate it eats nothing, and remains chiefly in re-
pose. 1t is able to swim however, by alter
p2tely bending and Strengthening its body. The
respiratory openings OF the alr-rutes aro now Ii
the thoFax; consequently, It rests with the head
upward ut the surface OF the water. The bsin
IL, ut this stage, so thin that the various mem
bcrs OF tho iusect can be seen through it, as
they lie closely folded together When the mo-