New-York tribune., 1868-04-29
NEW YORK DAILY TRIBUNE

ronage Of the Emperor experimental extensively and
this silk its gro wing importance and Industrial value
THE fUssEH sILK-woRM. (Bomosr Hand
This notable insect lives In wild state IN Bengal ana
IN hot gons India in the woods where the nhab
itants 20 to gather the ooeoons when are IRE S Se
Juube tree Efforts have been repeatedly made 10 re-
produce 1t in France, but in vain. ,, ,,u,,,n.
The cocoons OF this insect produce me anu Drllant
silk and very strong known In India as T"sse OF which
large quantities exported to Europe u,,o
THE WILD sIIK-woRM OF JAPAN. (BohOyr fuad,M
This worm raised from eggs sent from Japan by the
Consul General of France at Yedo has been
The oakeaf and trees of the same kind are its only
nourshment "a.
IL does not reonre great heat and to raise Its
is OF greensh yellow is formed IKE tat OF tn9
ordinary silkworm and can be reeed into Deau'iui
SILK.
BoNBYx cEcRoPIA.
This description of Indigenous to the teinPerno o
TegSRs OF North Amemsa Is Gahd ~ its SeStvated
state lives upon the elm the willow, aud other tees
IL produces large cocoon Of loose texture ana coaso
AT the Exhibition there collection Of SIX worms
leaves and ali that Relates TO the rearing Of the silk
were also displayed there.
The silkworm is tender and delicate. The experiences
OF the last twenty years have proven that II Is liable 10
epdemics that rage with peculiar violence and fataiy
STATE OF THE sILK.wORa MALADY AND THE REMEDIES
-.... PROPOSED. ."
During the period in which the disease in question has
attacked the slkworm, great research and the most
minute study have been made to ascertain the cause
Some have aseribed this calamity To the mulberry;
others have to species Gi ds enoes eG
which England and Germany have suffered 80 much
Others have asserted that the breeder had gradually
departed from and neglected those heait1 hs andG
snd snd rearinS r1sr' Of 81 such delicate creatures
The breeder percevng that he could aDdge te perou
aaaey S fearGg Ss nRsah brood and thence
numerous accidents because, by raising me TEN
perature the appetite was forced when caused derange
ments in the animal economy
These different causes less vague and indeter,
inmate may contributed 10 the development OF the
epidepc. However the theory Of disease IN the mIll,
berry r hardly admissible considering that M mas been
y Se a leaves OF the have
enced different Some succeeded the others were
ooS % hese ~ ss Wss innocent Of the effect
In the ifculties by which find ourselves involved
r. Sny % Ss Ss69S 6e S y tie
to be able rTtori, to reject infected subjects
After numerous Investigations by eminent men, certain
spots or bodies OF peculiar form and appearance were
discovered with the aid OF the microscope I'D the very
digestive canal evidently foreign to their organization,
aud in quantities RrGYCEonaten 10 tne M yOenSe % S d
pasc,es was given they are oval transparent sInae
than the giobules Of human blood, and resemble the
globules OF certain lamentations . -,
Widely different theories prevail IN regard to these
copuSeues and the remedies required Tor ther eIauea
non The distinguished sdrdr NJ Pastenr, has come 10
the conclusion that is organic, constitutional anec-
ton OF the insect to destroy which, either specific
able to the production the opuScules must be avoided
either by obtaining eggs from countries IRON Ie
pagate. He has demonstrated that contact between
We S aS te other hand the absorption Of few corpus,
eues through the feeding upon leaves washed Win cor
puSeiss water, causes the epidemic 10 spread Win III
Paster is of the opinion that search must be made
for the eoess IN the ey apG me hs %ssepI He
recommends the immediate destruction OF All insects
to be sesGd and ne Se cleanliness
essential condition to the exrpaton OF the disease o
NJ Bechanp who has devoted great patience to the in
yesgation, propounds the theory that the disease Is
p te order Of fermentations and that remedies like
creosoo will arrest If not destroy the development OF
S 10 wash tho eggs IN solution Of creosote duse an
impregnate vapor through the rooms OF the snK"orm
sueiSe II 10 saw that the methods recommended by
each Of these gentlemen for the determination OF the Gus
ali concur in the opinion that eggs diseased subect Is
are unrt for use, and should be rejected -. ,,o
chrysades and the moths proceeding from he Japanese
race or that OF the South American States have BEEN 70
the present moment, free from az trace Vi e"p"''''
aud all symptoms OF the disease: 80, -. ,.,o
Practical breeders OF the south OF France have MADE
very Interesting experiments from which IL resulted tt
the worm when hatched and bred IN stables OF ia sheep
i%s SSqsES1 &S prove that the s cs
Ssy SSSeS nnd quantity TH 70 R6 half raseS n the
aSrs e "a fs TRs tsaS faG bS ~ SnSa eG Oi'0
These repeated trials appear to demonstrate that the
EsInv ~ ibe atmosphere. which deveOpes Itself
declared manner under the conditions OF which we have
lt II species Of treatment analogous TO that of the
aud salt of Viehy, and other thermal springs
ELEMENTS EXPENSE WHICH ARISE rnon EiIr FREED
ING OF sIIK-woRhs. rr
Tho industry whose object IS the production OF cocoons
Is composed VI elements so special ana 80 Inereht Iro
those f manufactures IN general as 10 require at some
details given on the subject parity agreu'u"i anu
party haes Of The labor OF the sikworm breeder Is
fnnded i'm general on the amount OF mulberry leaves con
sumed These leaves constitute In TINS case 'he ia" MA
wc win give some figures derived from localities where
tbe popnaon Is relatively condensed such as the south
ter % for rearing the silkworn and the mulberry.
hcctare Tor l7llOOO acres) Of land, planted with
oS S Ros o leaves the expenses an kinds tOT the
culture OF this quantity may amount 10 $50 francs year
Then the 1000 klos OF leaves amounted 70 20 iranSs
THE 600 kilo Of leaves support variable quantity OF
cOcoons. In normal years It may amount 10 6o Nio
Tne the Ooo kos of leaves as the unit the average
expenses FOR feeding worms, for 80 grammes OF eggs are
80 gr of eggs, with price very variable, are =, =,
at the maximum Fcs 70 20 !,
Manual labor Of persons during 40 days Fes 49,
War Warning fn SSS and s.
Total. .Fcs' 2oo WI
The fresh eoeoons are worth at least eight francs
the o 1t would be sufficient TO obtain ~ an ,U
every 900 kOs Of leaves TO pay the
e oSy yss would be gain Of 80 france
ssO and II worked on basis OF one hectare oi uu
only thus would he gaining OF, 400 py o. 1VV Hane'
! tslOO in six weeks ,,.,. .-t
TIere were breeders In France who, before the cpl
demic produced many 1000 kilos OF eocoons III
| single season.
TOOLS OR STOCK NECESSARY TO TRANSFER The EcoCooNs
| INTO RAW SILK.
France and Italy are the only countries which have ex
baJ the apparatus necessary transform the cocoon
INTO threads of silk These the most advanced In n'
| whole of Europe, IN this speciality. -,
The industry Of spaD OF Greece, OF the Lev ana o
Russia has Initiated as much possible the means useo
in France Italy Those countries have not
been able 10 arrive at the perfection OF their neghDors
IA to the Orentas they lose part OF the advantages
which their privileged climate gives tnem IN regard y
the production Of sk by nsufhceney OF care ana SKILL
| details. .. .. =. 81,