, 1875-06-12
SPARkS.OF SCIENCE.


THE CoCkRCNCH.
Quo cannot contemplate thia little domestic /
nea. w,tl,nut el,tvor of s.lsgnat, md yet 1t ib
worth willis to know sonc.hng OF its life hta+
tory. Tho more facts NO cam gather regarding |
tlo habits Of tho inHects that nfest cir ia'iscp
us,l (cls, the bnttor We ato nbto TO rcsss their
invasion, and gnt limits to thor Increase. /
THO common c6ckfoac1i I1IIatta olfr,t0'is) Ia |
supposed to have nrigiuatol In AHa. wl,o'ico It !
waG carried 10 Europa, a.ll from thoro bTo'tGlis |
to America. II had 30 ovorruu England That IL
may Ia eatd to l4ava taken i'oaaossion OF tho !
island. II was as first connoa to seaport towns,
but fs now fo,lnd In evory nook and CORNER OF
tho Kingdom. a. tue fofnalo cockroacl' ia wing
s-sa.. anu depends. wholly upon its logs for
locomot!un, 1t ~ aylslent that ltR raPld spread
IL owing to lss transportation ftnhi rlace
to place In ,bnggagc, freight. and ~ose'' IN Tho
wcariug aprnroi. Ito lnecct IL 10 abundant and
trouh.esou,o ,n Ianton that traps for catcllng it
ero common atticlo VI sals IN al tic hardwa1o
sIores.
Tho insect lays ita cegs In siIky capsule that
IL III tho form Of 4 bonn with two ya1ycH IN :lln
interior dividing 1t Into two ara:tp,cnta eacl,
containing row Of Separato cl'amcors.-nbous
thirty III number r,-hnd enef. chamber incaohiui:
kingia egg. Tho capsule or esR caro- IL about
lhreo-oighttla Ut hi lnclf III lnnEih md nenr!y
throa.aixteoItha Of m inch "itl".' Many t1AYB
a1o rcqniret for uylpositio.l, autl during this
period tho fesnnta mny 10 Heon running about
witt, tho capsule partly rrotrnaing froas ller
body. 1t IN nt thsy timn TIM: tho cmbryoa
aro formed, and 'slnttly alter tho dap
| sulo Ii dropped tho fArun arc l'ntcl..
ed. 1Ismmel, tho German naturalist,
oncn~ placed female cockroach and
an cgg-po'lcli thnt had ]lBt been
abandoned by nnother farnalc under bell.
| glass! On discovering the pouch tho cock
roacl, oxanned 1t carefully. turning |. about in
| front legs mndo longitudinal ououng in Z.
lhrcnKn this opaninR shu aaaintea t''o Hts!e
white larvae to como forth. aitlinS st'oM goss!y
With Aer ahtoann. III u foS seconds after thcif
Which tho AccoucAeuse loft them to take caro- OF
IL orasnary esfcnmfn.sucas tho larvp, us soon
all tlay aro excluded from, tue cgg held IN tie
| pouch, discharge lipul which HoftouA Tho CO.
| nleus closing tho 'toothcd oaGea OF tho lnnEf-
tnlnal slit III tho capsule, nl,d tl.Hh aro nse' to
cnAorgo from II into tho outer World. An aoon
nv they hayo escaped Tho opening uf tho copsu[e
| or pouch cuses again. AMI ttltlt The euipty
case lools exactly NJ 1t did bofoEo 1t lost isa
| cputdnts, - - -.
TAo larym change their Rkln rix timos beforo
rcaohing tho poi1acs state. !hoy efo coiof'ess
on first onorGug iron, tho old skil,. but ASSUME
tLclr nAlla! tint TT tho courso Of 10" days At
the tiith nout tbs inject cutters. tho pura state.
| aud Mt the aixth, Which takes place at tho ord
OF ak wcoks, tho pupn becomes perfect Insect.
Tho fosnale Is ais,,ngutsbotl froul thu male by
tho larger 1tzo ot tue aba aomcn. mud by tho tnfe-
rios uize OF tho wings md clrtra. .-......,.
Tho Cockrbacll Ia otnulvpto,is, mud deyouts nli
snrtp OF dead BtlbBtaucoH vegetable aud ani1Rl.
It il fond Of tho blaaklng Of, boots and will con-
auao tho 1oatlor and Sill but while II does no
much lan,Hgo by eating garments snd 1ehtrnyiug
prof,sfonn' 1t may III pono case" Tender al cii; ~
cirnt -Bersico.S II reua.a Gpon tho bod-bug With
extremo a1idity' ond will rl ship tr a l.ouse
OF tho noxipus crcatuFo.. 1t waud 10 hnrG
question, however,. for housc'otierh to dcciuo
which of thcso tWo pesty hey "9llla ~ prefer 70
comfort In knowing that tho cosGsnacll atHo 'aH
sDnIe natural enem,cs aEnosig tho lnwcr nutn1a1s
Iha hedgehog considers. it dcentab1e food. aisd
ta,ne ono kGpt i kitchen will clear Ills apart-
acbt II Tho terrific nuisance. Aunst all insect-
! ir'oruig t.ft5 afa hfbo fond Ut 's1o ctlakioach.
sIs. Wood, tho l9ngliss, nstufnl,at, r6latcs q
stary which shows that to son'e human palataa
ths cocktoack H Az exceedingly agreeable tt-hit.
, Two young laltcs frotn Jamaica, who werp ut
beh10t iii LGnfon some Thirty ycara hgb, were
found to have the habit Of rising at night aud
sloscoutllng to tle hitchon in urter ~ stin uro'
tit!ly practice, tiley defot'ded sllctnHclses by
haylug cockroac!les woro cloan feeders, sud Ger.
. tainly III Ut for eating 10 sl.rn,ph. ,.,
Tho dlHagreoab!o odor which slie coc5roacl
cmtts. md which RcOn pofuleatcs a1l places tia
: It I,l,abItH. ptotoota from dask.co!otcd ilnl1
| wbtct, it tllacAnrgcH Irou tho mouth. This cock
I roach loves warmth and moisture. honco It's pop
ulouBtless III lituhc1Is where lire mud water ar
/ almost aver present. It IL II niEht-prowicr. ant
wasma out from i.s uec1ot latra oil the departure
Z | of daylight.
Far tlso tlentruc.on OF tlso cocEroacl, Sir. liar
l. riH, tho Into p1unont ohtonolnstst. recunsnplld
q inxturo continuing 4 Tablespoonful Ut rct
4 loa4 tho aaMe unninlt Of 1ndlun 1neai, With mo
= lnsses enough tn make q teit bastar Set Til
: OH plato At night in places freluentod by IL,
t. tnsccts aud all TINT cut Of 1t vii! hu polhonod
ur,s,. $rFk are
= spoonful OF powdered arrelie, with aallu
! Hsoo1ful Of mashed posnto. CrllnbIo tlta over
:. n,ght ut, bedtime wliero tho inBects wl
tlt.d IT. uni itdB said to bo an af1eetnal l'oso1
uroat cato should DO exorclsesl ll the uAo 1f ac
Il dangerous al,cnts. Au Innocent Nntllol Of de.
!: tFoyin. rockIoaches IL to place bowl Or basi
cu.ltianisi; llttle uiOlhssca Oh tt'o floor ut nlE
u ls of wood, roasng o',o ond o. tho il.t'
r serves as bridge to conduct tho lusoe!
= to the sstet dopohlt. onco In tho trap antl 4
T. afppory aides nltsent rotreas, aud THUS eocl
roacl,os may bo caught i'y tla thousands. Warrior
for tl!oir oatormluatlon. "a
:. Somo tropical -spectoa Of cocktoaali arc
enortnuns Btxo md vary troub!esoEnc trota enc
/ Inbt Of "tlylng. 'Ilio Ka.rrlp; i.sjqnix, wble
inIabi!a, CayenIp mud >nHzil, squlctuass s1eoos
f. u,t iuch and tllruo.,] .,]nartoss IN longt .ud in Il
axtent OF iss xings four intl!os anl haif., Ile
D. .ro tho post Of tho Antilles, wllsro tl,oy
nbouad TINT wa1Ia, iloors, furniture, cvorfthin
j. ato cUvsrcu with sslcn,, and It IL tntos4lbla
Iresotte food from thur densodutions. It
v aAlrpsl That thsy will in aelng|e night eat l.o!
: iuto trunks, cabes, aud bags, asld dostToy o1lec
s. that waro supposed to bo iuaccesa'tls to Lief
This Kake,hs americana, which infesta t,
It. warm rcs'ons Of tho Unite4 statss, Ia ird1n
D. III inches long. -
Ono spocIes OF coekroact, the Itota"sod
H. uRlcol0r. IL worry ahnntEant I'll tla woods IN II
nit t!ais. 1t may 10 found unsltr tho loo4e bark
liz. BtumpB and lccaYed troea at I'll seasoia Of n
nd yoar. 4ts ecg-cases sro about half an 'lo'