New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1864-03-19
SCIENCE AND AIT.
American Institute, Polytechnic As=ocin-
item.

ticu.
a regular meeting was held on Thursday
evening" March 10 the Chairman, S. ID. TILLlAs pre-
siding During the tmo devoted to the examination OF
new nTonton, and discoveries Dr. X. l.. STEVENS &C.
ologst gave lntereseg account OF recent eSpors-
tons made BY him Of the great iron deposits in The State
Of Missouri He presented rot only specimens Of iron
ore from that region but from various other localities
and gave the per centsgs Of iron IN each.
Iron Mountain Is 2eo feet above the surrounding val
lev ard oo6 fee. above ST. Louis II covers an area u
about 800 acres. 1t is nearly pure peeular iron ore.
containing only little slick IL Is massive, without
-sar-- al ses i~-ss
rcposes sandstone and above the sandstone IL layer
Of limestone containing facods. slowing that tho
mountain has been upleaved since these lower Sufian
deposits were laid down.
Inc Pilot Knob is much higher mountain its eeya.
ton being nearly coo feet IL Is composed Of alternate
strata cf POrphyry and spcular ore The mass or ore
opened Il nearly ~ the summit of the mountains the
quarry is 500 feet long by nbon % feet deep and is COM
posed " two MASSES separated from each other by
divisional baud Of slate from two " three Feet deep
The strata Of this mountain dip southwest 100.
Upol It's rks repose tie lover SllraA deposits
O. on the Iron Mountain.
The theory Dr. s. incines 10 is that II Bischocf viz
that GpeCUFr Is the metamo-phosed condition Of an
iron dapost In earlier ago Of tue American Cont
mont and Which was upheaved mot eruped nor injected
after the Silurion period.
Tbs Chairman dion preeented the following interesting
summary OF Scientific and Neurological INVESTIGATIONS
SUBSTITUTE EoE oUSFoWDER.
new explosive compound has been made in En-.
gland b. puYeIHlg, separately II parts 81 choraio 81
potash. - Vfrs Of ferEo'cyanide OF potaSsgm ana
parts Of sulphuri thee are mixed and with water
rincd into PASTE the is allowed to e,aporaie,
and 10 parts 0. India-rubber added These ngre'
dients when miIed and nodded into sny required
shape form solid compact body; ao-i arc said " an
syer the purposes Of ordinary ganpoBder.
IMPROVED DAyY LAMP.
an English improvement on Sir Humphrey Days
Safety Lamp Indispensable IN coal mines sn arrange
neut OF an extngushcr and lever connections viii ts
wge game that the instant the gHuze removed tho
ESSENTIAL OILS.
NJ T. e. Groves method Of separating and collecting
tie essential oil which exists IN minute quantities III lhe
watery solution produced ~ the oistlaon OF aromatic
herbs s to add to such solution proportion Of olive
oil. This Is formed into soapy emulsion by po.ssh
hen the emulsion is destroyed ny adding az acid, u
olive oil rises 70 the surface bringing WIKI al tho aro
matte OIL which may be dissolved oGs By agitation Nih
rootiHed lpiris.
LABORATORIES.
London Journal recounts the scientific benefits con-
ferred by the ROYAL Institution OF Greatsra during
an existence OF sixtyOnr years, and complains that
Will the Universities Of Bonn and Zurich are pending
~ OO Cor Improvements IN the chemical departments
the laboratories Of the Royal Institution ore nj only 10
be called back kitchens.
PRESERVATION OF MEAT.
The Admiralty OF Great Britain are now mak1re eI-
rermcuts with the process OF Dr. Morgan FOR tie pres
cryation II meat lt consists In foro;rS trorgh the
arteries cspilaries and veins q the slaughtered AMI
NAL brine which carries before II the blood and both
make their exit through incison provided for That
purpose The brine tank Is elevated about twenty feet
80 a. 10 give sufficient pressure ~ the fluid, which
pesses through tabe into the ohe, Of the animal. An
other tank ct the same hight contains mixture con-
stnr Of 81 gallons OF brine, 10 lbs OF sugar aud Of
pound of sGpcter vita an infusion OF cloves and pep
per- After tho frat or cleansing OPERATION requiring
bou. ak gallons of brine the fluid from the second tank
4 forced through the same passages The exit being
closed every part OF tho body Is thus raYered by TIE
auid The whole process OF cleaning and iniltration
does not occupy more tlan twenty minutes. The sni.
nal "a soon after skinned and cut IN pieces which ore
thoroughly dried and packed IN snwdust aud charcoal
I, II said meat treated In this manner will stand any
climate and that more of it, nutrtye qualities ore
preserved than by the ordinary process OF caring
WHITE ANTS.
The Admiralty also seeking the best means OF Sc
crnc tie destruction of the white ants Introduced into
enesown twenty years since rum the coat Of Guinea
They have multiplied so Ne 20 ijure every building In
Inc iace and have reduced b such state ~ ruin
as 70 compel The inhabitants n abandon them Similar
rrpe reuce related OF the white ants In india where
~ thcy once gain TO house their eradication Is
inpnssibe unoss tha bouao Ia taken down and rebuilt
Mr. II. W. Bates who hal much experience respecting
these Insects In South America states that They do not
ut ack houses furniture or boxes made OF hard wood
called acapu II customary to project articles OF
softer wood by placing them blocks oacapn He found
they could be expelled by the OF tho srsenca soap
eurloyed IN preserving skins This compound-con-
sisng of common soap corbonste OF potash ana white
asenc-s made into ather and brushed over the arti
cles 10 be protected. This involves the dissemination
OF arsenc in the atmosphere aud must be Dangerous 70
the health Of the inhabitants The rsyages OF tho n-
sects on tho aeepers and woodwork Of the Eas Indian
railways have been prevented by ths use Of creosote
which however, has odor Objectionable as to pre-
Tea, ia gse IN dwelling houses