New-York tribune., 1875-11-13


shades exactly like those of hmcai and almost as
fast. sample Of wool dyed with it was ssearcSy
affected hv n weeks eXpUsnrc 10 the SUM- lhe us
covercr is a Ne~-iork chemist
ANEW IvCASDFsCEST LIGuT.-Iiannecker. taking
advantage Of the properties OF ncsndescense has OBJ
tained lamp of extraordinary briancy by direct
ing the fame of a spirit-amp OF special eolistiuc-
ton and fed by current of oxygen against
cylinder composed of sicate of lime, inagnesia, ana
olIvine which latter is natural silicate of mag
nusia. The cylinder composed of these eartiis u
compressed by hydraulic pressure, III manner ho'
VCry different IRON tie metnod employed lIr ioiH-
ing the FLINDERS used IN the DIummond hght.
MANUFAcTURE OF CARBoLIc ACID.-The following
process for separating carboc acid from the cTcsyc
and other Equid tar acids recently patented by
Lowe and GIL ia England. The partially or wholly
hydrated mixtures of tar acids are submitted for
sufficiently prolonged time 10 temperature varying
between lJo and $50 Fair. The carbohc scid
crystals thus formed separated from the mother
Liquors containing the liquid tar acid, and rosldue
of carboic acid dissolved in them. Complete pulIl-
ca ION 0f the carboc acid crystals thus ohtlned Is
Ell cted by rCy ystailzat.on either ty partil iuson
or soiuton IN water, with subsequent refriseraioi;
Carlollc acid OF high degrees OF purity Is oDtu'"u
by dehydsatiug these carbOlic acld crystals
SUBSTITUTE FOR PERSIAN INsECT-PowDER. The
wild rosemary (Lodam pdiast'o) has been suggested
~ a substitute for Persian msect-powder. When
dried as wsll fresh it ia destructive to ce bugs
feas moths, &c. The tinctuTe prepared from 1t Is
alsn rerue,ly for the bites of gnats, and insect
generally not only relieving the itching III short
time but also the pain, when applied to wound.
The tiucture rcpes gnats when mixed with glycerine
and rubbed upon the skin. lt seems To deserve no zee
on account of tIese properties and tS pos'Ib!e SUD
sriiution for the more expensive ana 1ftque"il!
adulteratcd Persian nect-p,wuei' ,ih IN h,Is, t
effective when fresh ami in bioOm and should he
gathered IN the latter cG'di'icll
KAofIy IN NFsRAsKA-It has lately been reported
that deposit Of ka, lin, nf not less than 30 ie't
In thickness and underlying about 100 acres has
been discovered in the ncighbOrlood Of Omaha. II
appears that the deposit crops out along bluh Tor
over half mile, with but IA few inches OF earth
covering t. The character Of the material IL SAID v"
improve with the depth the upper portions helng
.oaf,e and Crauu az in teXtarc, wh,ie lower GOWN IL
ecomes py excessively finer and whiier IL l. rep
escntcd be remarkably free fron toreiSa liiV,H.
ics and adapted for the manufacture oi great
.arietv of articles in large dstdaHd thIoughout te
'Ves,ern G mntry. There Is aTailroad aud an abund
ance Of timber and water IL tLe neig gIboihood
DRFDGING FOR ANBER.-AccOrding to an official
report from Mcmel, Germany, an establish nent has
been organized for gaining aubcr by dredging Tor II
in the Kurlsche Han, near the village Oh SchWarl-
orts. situated about 10 miles south Of Mcmol. 1t
has been known for many years that amber existed
in the soil of this place, from the Tact that the
dredger employe by tle Government for tae pur-
pose If clearing away the shallow spots near
schwarzorts which impedrd uavg ,tion brought up
pieces of amber which were duly appropriated by
the workmen aud at the ii ne no p r ocular attcn-
tcn was pail e. The matter. Some time afterwards
However 80 Ise speculItOTs associated, and male an
offer 10 the Government not only 10 do tie dire glng
wherever required "a, their own expense, but 10 pay
Gally rent, provided tne amber whicl thev miSdt
fftSh Sh,.ul ltslO spt v.
was accepted, aid the rent nXed at II thaiefs, ai
later at 2j t1alcts, FOR each worh ~ daH. n
dredging Nds begun with fOIr machines woi ked by
men and worked by horses < x ilph IN"
extended bt-dcss ia ,saetlonS IA ibIs iidtIr, MS
result, must nave been extremely prOhtahle. Al
pfrerpt the work l. carried with lS steam
drrdges and two ig-boats the whole managed by
about 1000 laborcis.
THIS RESISTING MEDIUM EXISTING ~ SPAcF.-
The argument for the existence oi wedIum ia the
intei-stellT spaces which 10 sufficiently dense u"
affect the movements of the planets. comets %c
ba, for a Ionr time been based solely upon the sup
posed retardation 0f the movements of LncheS
comet. This body completes its orbit around the sun
III about tr,e years, but has of latcaways al cared
So exceedingly faint as 80 bc invisible excerpt III the
most powerful telescopes. The accurate compute
tons of v0n'Ascn haNiIg shown Liza that the IN We
nens OF this boy, as observed during the Last Ten
year, cOul1 be urltely accounted ior by care
fu computation OF the disturbing attractions of the
planets he was led pred CT tine positions ia winch
The comet should .pp.u during the SIrIng of 1879.
III which Prtui Ons 40 allowance was made for the
resistance offered 10 u m0,iOh Encaoa BypO.ht =
ical ethereal medIim. the hrs. glimpse oi IN
comet during TINS season N'is "'taihc Ny the o.
scrycrs al Washington IN cIargs of the great
equatorial. According To Tn 81 and other aSti0H0-
n'ers. the comet passs IN Tie heaNe'is lnrngh Il
lions 10 all l al! arg inentS III iaVOr 0I i;"'ke
hypothesis un1csS, in'eeI 1T be 50 mo'hhc'i AS 20
attribute 10 tLl5 cthtI "a density lar cSe 'hdh he
suppOs ii IL 10 p,isses&
CHAxGrs oF CoLORAnoV IL FLOWERS BY ARTI-
PICIAL MrANs.-1he French JoIHG' Of HOrt,caitUe,
ia an article upon the changes If coloration which
certain natural flowers undergo, remarks thai 4
violet flowers are exposed 10 The smoke from bum
inc cigar they change color aud a,sll.ne tint o.
green, which is decided IN proportion To the biil-
Iancy of t4.r original color THIS dGe TO the AMI
nouia ia the smoke. Starting ont with this tact,
Prof Gubba has made series Of experiments for
tie purpose of Determining the changes which ain-
monia produces in the cOlors of different trwers.
lor thIs purpose he merely Wakes use of dish Ia
which Is poured small quantity Of common aqua
ammonia. Over ,hls lie places a funnel, IN Che tube
of vhieh are in rted the dowcrs be experimental
upon. la this way lie has sbGWn tiiat blue, violet,
aud purple flowers change IL "a beautiful ere,h deep
rel carmine flowers to black white to yellow, etc.
These changes are most striking where the flowers
have severd didoIent unts, IL which the Ie. i'he'
tUrpcti green, tut NIilc AcIiON, ttC. ~
ing example u n. OF the tuch,a>. with Wi |ud
red flowers, whicL- in consequence of the a;nn MIA
Vst4r, become yellow, blue, ana gIoel III, "heh
these changes A;tse taken place, the upwrts aIt !iu-
inersed u pure wafer they preserve tieu new colon :
fOr several hours, aft,r which, they gradually tfs ne
their on ginal lnts Another Olsrv atoa ,ue tG Mr..
Gobba il that tire flowers OF the asterH wl.cI are
naturally unOdOrou-, acquire a very Agreeable per
fui.ie under the Inliue.cc a ammonia The nov Is
OF tse violet asIcrs also become rd wien they ayc
Uo.stegsed with q diluted sOluiiOd OF nitric acid.
Again these same fo~erN, exp sed III aii open bon