New-York daily tribune. [volume] (New-York [N.Y.]) 1842-1866, 1864-03-05
SCIENCE AND ART.
American Institute Polytechnic Assscis.
ton.


Chairman. S. D. TrLLNAS, presiding.
An apparatus was exhibited for the anal ytcal deter
mnation Of coal oils, petroleum, &C.. by fractional d.
tiIation, according to W. Regnaut the dstinguisha
french chemist 1t consists of a cylindrical rescn
made Of copper Of about 800 cubic centineters caps
IT, provided with tabulature at the top for introducing
thermometer and bent neck. entering into tie tabs
lature of condenser by ground joint. The sa
denser has an interior cylinder Of brass. which tern
mates at the top and bottom in open tubes hA
whole being fastened alright In an olter cylinder
the same metal A continual current of cod water q
poured into the condenser through funnel which opens
near the bottom Of the same. The hot water is carried
of by a tube at the top. Tho whole apparatus is sup
ported by iron tripod at the base OF which 10 an A.
rangomeat with five glass cylinders. graduated ls
cubic centimeters, and standing in row on moTabk
support.
| Ihe mode OF operation is as follows: by means Of
ppette 100 cubic ceutme,5rs Of the oil to be tested az
introduced through the tabUature Of the reou, which
should not be filed to mere than onethlrd VI It's o.
pncity A thermometer Centigrade) is inserted into
the tabuature Of the reort and adjusted so as oEt
vent IL from touching the liquid Inc dlsslatoh ofrs
LIQUID IL carried on by means OF gas burner
an alcohol lamp. H. for exainpe, wish 10 separates
mixture OF cude oil. LIST. into oils dstiDg over at llp
c. or 2i2o Fab. 2d AZ from 1902 to 1902 Sd. from lAp
Do 1902: 4th from 1902 20 1900; 5h from lC0s 70 lS
Ae Inst term corresponding with 800 FAM tae rOcs
of operation Is TO side the first graduated cylinder
condensed from the distilation at the tst degreed
temperature mentioned, when the second eylisder
placed under the outlet 20 receive the distaoa tie
second temperature required thus the renal inc hrs
walls passed under tie outlet The oils thus eo.
lcoted being condensed III uniform manner by cod
water VIII he Of the same temperature, and the volume
in cubic centmeters in each cylinder viii represent ia
per eeItage OF each oil contained in the mixture
Mr.. GARyEY inquired If II was well-esablshed that
petroleum is mixture OF oils that be separated
different boiling points-hls Own experiments slored
o. ff,rff avtaf in off
ierent oil. which on being again heated passed into
vapor at a lower temperature
Or. PAR,nLEE remarked that he used about 900 gal
Ions Of benzne per week. having 81. or. Of ron p
10 sOo Baume and found IL very difficult TO get e.
tirely free from raphtha by heat. Petroleum dealers
have 10 other means OF estimating the different e9aa
ties OF oil than the heat test Stil there is dividing
line between the oils-they can be obtained st l2o
any specific gravity between certain limits.
Ike CHAIRMAN read his usual summary OF SCENTS.
news commencing with subject bearing upon the oN
Inst discussed
The Boiling Point Test--The boiling point Is nj
always o test Of purity, according 10 report 70 ~
French Academy by NJ Alnard. OF experiments, nr
lures OF two liquids which mutually dissolve ean
oher In al proportions. Having discovered that eEhs
dissolved With IlOth lis weight Of Suphite OF carDa
boiled at the same temperature with ether. AinA1
made similar observations on mixture OF alcohol ia
suphide OF carbon also mixture OF alcohol and ethe
He admits that 10 determine the purity Of hquhr
course must be had to NJ Regnauts method Of deiern
lining the elastic force OF It's yapOr The presence OF a
SUBSTANCE uu0eU tkther 10 tkcolOA
to the amount Of l.0OOth part thus be detected
4 N-s Disedse-It is now admitted by medical a.
thorites that disease is added to the catalogues
human ills. Isolated cases OF 1t in Europo have ~,
tluo Ia time been reported, but communication iro1
DR.. Muller Of Homberg in The London Lancer contains
account Of It's propagation rs an epidemic IN heF
saedt, small town OF i've or siy thousand HlaDisA
In Prussia where it originated in consequence OF ~
frstinfected persons having eaten kind OF ssassss
not thoroughly cooked. Ii was made OF pofE WIZ
the microscopic worm known as tr1,Ams r.
rails. These trichine make their way through nea
ing Of the human intestnes and arc found II immens
uumbe in the muscles DIR. Miller states that HIes
hc was called to the town 20 patient eighteen .,
twenty persons bad died, and eighty more we're an4
with al the symptoms OF trichinD fever IheguP
toms Il the disease correspond with those ofthe yPl1
with the addition OF Oh enlargement OF the spleen ~
Intense pain in the muscles particularly in ile %.
he leg. On examining small portions OF nus,
rom living patients with the microscope opEds "
hese trchinG could be seen. Picric acid was adu.a
cred without success Leuckart states that tFcllns
not killed in pork BY sailing or freezing IL noI -
is becoming putrid. Imperfect smoking AID ihPelI.'
cooking OF the pork will rot destroy them. Ther eon
plete destruction is only effected when every
pork las been raised 10 temperature above sA' UO
point .,-v
Ths Lalsnde Prf.e-The priso OF the French Academy
which. it will be remembered was last year awareea
Alya Clark of Cambridge, Mass, has TINS year 80
given TO NJ. Chacornae for bis astroDonlcai oUsss
lions. He has discovered seven small planets an su
and first reported 30 the Academy the curious pn.
non Of variable ncbua in tie constellation Iauip IA.
SPONTANEOUS Gerergfion.-This question Whlen 80
ong been discussed in the French Academy Is 500
% settled. NJ. Pasteur and NJ. P0uchet the nsos
lisputants, TO repeat their experiments oesOy I'm
Committee OF prominent members whose deel''OH '-~
10 regarded as final t.r
Al5Eneu Tran storwSnos.-M Schutzurbergeh hS:
lorted % the Academy experiments Which plSb ~
cagulated albumen and oasein may be tTsnsiOi. |
ayss into soluble albumen coagulable py hca.
4 Great GEn-An iron gun has just been sueee'pI
asst ut the Fort Pitt Foundry, and cooled on tne IN.
nan plan OF circulating cold water IN the eolet
mold being set perpendiculary 600 pounas de-
nus melted for this purpose In three furnaces A'1
curing was completed in - minutes
The following is a statement Of the dimensios
Weight Of gun in the rough. -.-..--
Weight when finished. .-......-.-.---llZWp
Total length finished
Length OF bore =.
Diameter OF bore. ..-.-.....--.--.UE IL,
Maximum diameter Of gun. -...-..... IN. oi
Minimum diameter. ...-.-.---.--.:- II
The gun viii use spherical shot OF !. wv 10, IN
Ael ESQ n. II the gun Is rifed II Ii thodgnsH
,rry o shot Of ono tnn weight The charge =. -
owder viii weigh from 80 TO 100 .. Ins sun
, be the largest In the world, and 10 Pittsnmsa
ngs the honor OF producingit Report ss.n w.
aced on some Of the defonses Of the harDos VI N'"
oTk. ,,,ss
Prir..-The French Academy OF Science oner IT, -,
a gold medal value B. 600 francs for tho pcst Psp
, ,'rbe Comparatiye Anstomy Of the Nervous s!ss,
Fishes --latest day for the reception OF papers tx
1904 Also 1900 francs for the best paper on ,eisI
80 ALL Ma o. a