New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1875-09-18
APPLIED SILENCE

rs IA - A<AG1 A(RAA<<ANA~
-
ELASTIC GrAss-Yne proosss for tho proFarstisn
q this reaska kle substance. discovered BY Base.
snd ilf IN some measure secret n said to be very
simple, cheap and unaAendel with danger. All va
purs injurious 70 the health are avoided. The IN
Veater estimaea tAgs the whole operation essn bs
oorvleted ia ftw hours and that tho expense vial
not reach 40 to so per cent Of the vae Of ordinary
kinds of glass. Repeated experiments indicate that
hs resistance to blo~s Ia 80 ttes that Of orrnnry
Sisss and that It IA unaffected either by sudden
cooling, as in cold water, or by heating II in steve.
tafc ring, and when fcrcihly broken separated into
vcry small crystals, instead VI into iaigvr airl
smaller pieces, tins showing peculiar eAsnge NJ
adeula constitution. saErpS vt II have been
ss n s 1,m o. a1S s'ssys Mrs st asi
tnbes wstch-gl~set 10
Nnw METHOD OF FurIISG WpoIFx G0oIw.-Thc
following method, employed IN EHcaf, IA said tn re-
snirc kuta few hcurs and to leave tho uo~ ueHy
SOFT while IL does not at ak the color IT. consists
in simply replacing tie ftt.ler's earth by sunt. Tho
Latter il obtained ~ follows: Wooden vessel 'sI
filed with raw, unsecured weol, on wick water vs.
pumped from another vessel, and allowed to remain
upon it three hoe1s IL 10 then I'll pumped back into
ths Acconl vessel, aud again orsT the wool In the
A4~t yvssei and allowed to remain on it two heurs
The operation is repeated several times, according 70
is then removed md thorobtrE freed from
water as,ti fresh potioa of wool istrc,',cea ant
neatcd III slaalsr ias,;S; "na Gs w" Sran ~" oi
ard wtsssyed far use The caoets fflltcd WIN VIC
nccoxar, qu.utity Of tia liquid, IN tl'c nIachsie,
aud then tss,'ssAy wasiih is said to he fen@a pei
fexry cleaned
EXTENDING rnr coxrAss AND 1xcarAs1Sa tn:
TpNs or STRINeED ISerRUaKgr~.--At = recent
meeting Of the Musical Association Of London. DR..
eta ~ ftrvc NnV in which
string may be made IA give very slow vibrations,
viga: by Increasing IT. bugth. its Thickness, or its
density He had adopted the thltl plan by covering
catgut string with heavy copper wire, whfc proved
to be fairly successful his had l~en improved upon
by reinforcing the vibrations by means Of longitnd-
ina struts or bars applied 70 the double bass VIOLIN
-Four strips of white wood, curved TO all elliptical
Grure airs passed PARALLEL from end to eed on the in
eide III Oh. belly of the violin Ike result is the re-
moyal of what is terssd by the musicians Won"
or inequality and falscness Of tone, with great in
esssoof rowes roua''ost the range Of t;e instf 10
small vosins and the bars can I've tetAoved At piss-
ure without ,issfaging tie instrument Az te Hills
issts~nsslt wioa, original coss Wa; +. I'd. was eS-
Inhibited, Il, w.rit this RrroTcts hal bet aPpe',
and It's performances called forth great applause.
AIR.TrGHT JpINrs-I'rof. Creokes states that in
tuIne observations made by him, it has been neccs-
AIRY to preserve his apparatus within vacuum for
4 number of hours, and II possible, days. To this
end il WAS very important tn secure cement that
would unite the icints Of his apparatus in such
way as net to allow the leakage Of air under an or
binary pressure Of 10 or 10 pouhds 10 the square
i,tel. Whenever possible, glass tubes shonld be
united at the POINTS by hison, and when this Is IN
POSSIBLE mercury Joints se,sld be used, and it is
found that ttfe st way Construct these n TO have
wtalraade Yerfrate ed csliical stopper of very purc
ifdia rubber knit into The wide funnel tubc OF the
-, .,.Ia f1,.f f1zlr NN
Che tul~s into the Adia-i ubber, this is heated in n
spirit-lmnp until it's surface is decomp.eed. 1t is
iii Of yiiroi Oh the top Of that, and lcn Well hsde
this joint sceus entirely secure Ordinary inda-1b
the vacuum is nearly perfect they allow oKygsnocl
or to pass through a. readily a. the phRp MI, re-
pove It. ccntilt thar lasts n fsfdctoriy FOR afty
kotr, Int not ovcr day Or twp - inHde by q INK
tsfre Of parts OF resin and OF beeswax
Firm AyvrA1 REroer IF TIE FISH CONNIE sfoN-
RRs OF New-JErsrY--Tho fifth anInnd report tfcr
the year 1879 of the Commissioners Of FismrNs Of
tise State Of Nov-Jcl soy contains notice OF the
Work done during TIN past year. The report refers
in appropriate terms TO TIE death of DIR. Slack, one
Of the elaet Commissioners If t!sAt State, and enc
of the most successful fish cultuists i'll this country
In references to sad-tie most important fish OF tine
Delaware Reversible report states that the catch
during the year 1874 was so per cent more than in
1873 that the average weight of the fish was cos-
siderably increased. This was awfbea 70 Tie icittr
observance Of the fishery LAWS for he past trce SEA
soHs esls cialy that requiring weekly close nc OF
80 hours, and also to the removal I'll fSh-oaskets III
Ge Delaware. by which great naulefas q toni
fish had heretofore been Destroyed. The ChRunls
siCnrrs urge the enforcement of te law in reference
70 ths class If SONS and Others of greater or
kss moment A very Important feaf,rr IN the re-
nor consists in te reprint OF the laws enactti by
TIE LcsiasNre Of S,w-Jersey III reference to the
rorcufreit riHa;s Of NS%-Jsrsey anu Pe,Insylvania
over t,e fisheries Of the Delaware; and also the
asroeiucnis on the subject entered into Ivy the repre-
scntativcs of tho two States at various times.
sslr-c4o ssss HrS,,t rol. ss1of.M DOORS. De1Ubft
NUNS &e4-k very iiltesHons stif-sciae li'nee FIR
sso,,r-,iocrs, tion6lc-toors &C., opening in onr
both directions, HIS BEEN DEVISED by Koch Of Iser
Nm. II "a said III allow tire dser to move easily
and noiscIcssiy and also to 6e fixed ut an
Ahge Of d httle rntre than 30 degrees, IF
aesired, without any fastening. fab Do
ser,piion however, can only be piven Wifi The aid
Of a fieure The ,Four fneNes IN riv6t al 'hr top
and Bottom, the rear end at the bottom resting in
shoe, to which it 10 firmly screwed. and which has
the pivot mttaeiicl to it beneath and also Snail
wheel Fttqe in front of the pivot AZ tho door Is
opened this small &hctl moves uron al arm Of h
lever, the other arm of which is in c,,lact with the
end of an almost ciJcplar Horizontal sprns, which
carries lie door back to its norma! position rs soon
ash is rleased, TIE power being grca l!st when
the door Is released, and diminishing until 1t is COM
pletely closed Tl1 sp!iAg, lever &c. RE mci'sc'i
IN atast-hou box eostred with brass plate, screwed
on IN H. counter sunk 10 the level f the foor. The
upper socket, Set in fte ctshS bf tie door, is at
tsehed 70 riaA wifsi has 81 md set scsw, 50
slightly ana Tins Ne af5sitd - any jn;serI=ices
IN irieiii ssse door, The upper pivet Is Jet te tie
top sf the dsdr and rsrs uson oi% end NJ lever,
also ev into THE top OF the door, and is forced up
INTO the wekcf Ivy aotiIrg on TIT ocr cfr %,
the lever. Rapr the fsOnt of tho door, titus render
lug il easy to hang Oh remove
TuR MECHANICAL PREDICTION OF CoLD.--hir