New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1875-01-01

of stones of considerable size to the ols'ao0 " '
n oral feet
IMPROVED CHROME GREEN.-Practcal chemists
have for long time, had their attention ulio0Vo
TO the problem of manufacturing perhlaue"'
greens. otherwise than "a combinations OF arsehici
/ and it is now announced that very hhe anu III
tense chrome green con be prepared by hea'ines
mixture of equal parts of sulphur and Dlchromate OF
notasb IN redness in a crucibe. Inc product Is
then to be leached with hot water when uissoDS d
the suphide and suphate OF potaSs my Doygder
and leaves the oxide of chromium as hue pOWuSr'
of an intense green color
Nox,oUs CIVILIZATIONS FROM TIE MEADOW
sArrRoN-Isidore Pierre communicates to the Paris
Academy an interesting fact in regard TO certain ex
halations from the fowerof the COichicHm dutumnde
or meadow saffron In passing through garden
where these plants were in full bloom, he accident
ay held his hand near the flower, and found, after
n few seconds that his fingers had changed color
and assumed yellowish green tint similar to that
of the decomposing human subject In short time
however the skin resumed its natural color Inc
precise character of this emanatOn Pierre was I'M
able to determine. 1t could not be any solld SUD
stance as it would have been much more persistent
He thinks, therefore, 1t Is some extremely VoISeie
liquid which he proposes to investigate nelcle od
He is convinced also, that exposure 10 III produce1
certain uncomfortable sensations both IN ms hand
and his mouth, calling to mind the toXcal eecls ol
the meadow saffron, which under CERTAIN clrcum-
MAGNETIC ORE SEPARATOR.-A magnetlc ORC seP"
rator has lately been invented by MI hns' - IL
gland for the purpose of separating lon Wv - /
other minerals when associated with tneih' IL 10 "
,roso,t eInnloved at the Balycorkish Mines on the
Isle Of Man where the ore consists OF l1iA'u'0O'
pyalena blendc and spathose iron ORE ne s'ion'
can easily be set free, In consequence VI i
naoiec gravity Int the bendo and the spathlc ore
cannot be separated by any modern means n 70
rectlv satisfactory result is obtained however oy
o,s f rho MAGNETIC ore separator The ore, after
lhi crpsbcd is roasted at dull red heat IN IcvolV
inc Teforts when the carbonate of IRON IS ucvui
lnosed and magnetic oxide producou. lno ~, "a an
Then transferred to the hopper oil ne HILL ob"nt
,noratus which consists of large drum WleeI :IS
II i6inehes in diameter and III IN DIealn Luz diit,
i within with a stem OF magnets, d o 81 fonr 9f
n The mixed ore in its passage over ST., r,duaIIv
n those drums has its magnetic portion elduu'y
seSaratcd by attraction and the part that eSV'P's
| clean bende.
! Axr7srprc AND PHYSIOLOGICAL EFFECTS OF
snIcyIIC ACiD-InvestigatiOn by froi koioe lh-
dicate that salicylic acid, like carbohc acid, re-
Grains or even prevents fermentation ana putIelac
!. tion and rossesses general mtiseptc properties
Tins the addition Of 11oo0th, or even less VI 'ne
ooid 70 solution of grape sugar prevents entirely
the action Of Yeast upon IT, very slight quantity
added to milk keeps it sweet for long tihe' WIZ"
, ont being parceptible to the TASTE FRESH hiG''
treated with it has been found to Keep wei Ill 'no
air for weeks and its possible use IN INC
tior Of meat il suggested. Experiments made III
the Ieipsic Hospital By strewing IT, ei'her aio"' u
nixed with starch upon Commissions and cahceGonS
, eo,os showed that il destroys the fe'id Gd9rs
1Sitbont producing perceptible inflammation LIKE
wise in other cases, and IN anputatiohs "a - 49,
Nth such results as to justify the nope tha' my
,V fonnd in the surgery to have all the deslIaoie
nropertes of carbolic acid without its ooJec! ~ .
nc and tbot it may also E9 found ctncaclo.S as
Sa,nedv in certain classes Of diseases Experiments
VIII If br administering it internally or ny eNteI
nal application, in cases OF lnclpien' onoi''"'
/ suggested.
VIDALs APPARATUS (EBUILIKOPl FOR THE De
t. | TERMINATION OF THE AMOUNT OF ALCOHOL IN
. WINE. &c-The following instrument, an improve
; ment on that originally devised by Vidal, 1t is
= claimed will indicate accurately the percentage OF
alcohol in liquids III less than 10 minutes using but
little of the liquid. 1t depends upon the fact that
sugar resin citriC aud taTtarc acids do not change
the boiling point of alcohol in which they may be
dissolved and consequently the determination OF
the boiling point viii determine the amount of aIco-
hol present in an aqueous liquid. 1t consists OF a
concal boiler 81 lsed at the top with a scTew-cap
having two apertures in it, through one of which a
thermometer bent at right angles, is inserted, il
such a way that the bulb can be immersed IN the
LIQUID or the vapor at pleasure, while upon the other
is screwed cOnd enseT, consisting or TWO conCentc
cylinders At tametIlCdllN opposite points NJ Ille
bottom of the boiler the ends of small curved
spiral shaped tuhe are inserted. Ills tube, hled
with the liquid as the boiler, passes directly
through the chimney OF a lamp, and consequently 1c-
ceivcs upon small surface the whole Of the heat of
the lamp. The fluid thus gradually warmed Clrcu-
latps through the tube and the boiler until the
whole of il has reached the boiling uOint, when the
thermometer becomes stationary and will remain so
for 10 minutes. A hOTZ Jnta movable scale j. hXed
\ to the top of the boiler, by comparing which with
the thermometer the amount OF alcohol Is indicated
| III degrees from up TO p.
THE GoUR4Nn IN FRANCE.-An important expert
ment has lately been made by NJ. Carbonnier of
Paris in the successful introduction INTO France of
specimens of the gourami (OsphrOmeaas gWdmy).
The first essay toward this result was made fifteen
years ago by the Acclmatization Society On the
arrival Of the specimens. account Of their pre-
sumed inability to resist cold they placed in
the reptile house of the Garden Of Plants and i'll
. | warm water, where they lived and continued in
good health from April or May to October; but the
furnace fire having been accidentally extnguished.
the water became cooled to about So and they all
, died. Practically the gOuTami is in the habit of
, burying itself IN the mud whenever the water
descends to a temperature below that which it can
readily endure but this fact in its natural history
I not being properly appreciated provision was
= made for il, and the fish persisted
The ish first received procured at the MauTj-
thus, but those now IN possession Of NJ Carbonnier
were forwarded from India. and It is interesting
and important fact that thew have already resisted
a temperature of about A. during winch they have
fed freely Possibly the Chinese species may be still
, more resistant Of cold.
1t is understood TO be the purpose of the L. s.
? Il Nl NIs