The sun. [volume] (New York [N.Y.]) 1833-1916, 1893-04-23
NOTES o. SCIENCE AND uxDusrn1.

N1eNt VI thAntt VI tAfo OhethstI
appears to be met by q recent French inven-
tion. This new pipette is formed In two parts
one. the. portion to contain the measured vol.
nme Of ln'i. being Of the same share as has
sHs ish Is the Do ,afn% festuro eS ef the issG ipstF R1d5,Ga.
blown On the end; which CYLINDER ats over the
bulb o; the piPette. 2 tight Joint being made
cock Ries snd 81 . r fSssrho ,Sol n the S''h side e q DiIn e:
iss Sssn q the G,s end o r" the "n sare Stsf IN %" the s,' ila nSti.
ii Ia The eu nsTaI way AVN until NH tho ini a f dos et over the Il.
s snies II e sss mf sSs pinsh eSelif Is n lasS Closed sss S,l X:
pipette. placed. 10 the vessel into which the
through the ingerhoie in the side:.u under this
arrangement. the liquid In the pipette flows
out and positive exactness is obtained.
Some OF the finest results in the nothing
Of iron are now obtained by the following
UNIQUE process: The iron parts to be case
hardened. in gun making, are brightly pol.
r. an iron ,, So x, And soysE Sst either ss with hons
It Is allowed to rcmsin about one hour. or until
RRaSvss S Sesn b sx'ssih t To q red red heat heats The RI con- %eents sfas
OF the box are then dumped quickly into
fore It reaches the water. Special apparatus
hi from ls%he dssir alS s' bise ! !. notified soi ta:
ior 4 the Air reaches the iron Il assumss
as The operation has been more or less imper.
feet. Alter cooling. tho iron is vanished.
Trials made at Chicago aud It's suburbs with
the naphtha motor for street railways have de-
veloped UNEXPECTED efficiency. this being
largely due. doubtless. TO the PECULIAR systeY
adopted. as compared with methods resorted
nent q cylisdriesl tank is located a any con;
yenient place on the car. and e%ncloses q second
hiiied with water. which nows through pipes 10
sHh"sss i sf Is hs .as 'G SS S fssdiatios. q sn adS sasi the
tanks. pipes; ant spaces nSD"s The cyI,ndsI.
,s 4; drawn ie S sssSHsa The sSsro !%ass s ssa.sss:d
tGh' ssh alsindsas. ve ISsro ah e fsen ed snisss q
and exploded By an electric spark e.neratsd
plstons are attached to the crank shaft at dif-
fcrept ANGLES. and the shaft 8 carries . hea,y
inches In diameter. sSupperted on 3 vertical
snata,i S GIss. ana dft this %r aRa { Il ' afsssp e ss t {:
moved up and doTp non on It's shaft y means 81
power. By means Of bevei gears and . sproctss
chain to the wheels Of the car. The engine be.
rate. the speed and direction Of The car being
controlled by q system Of levers which moves
the lTlctlOp Wneel over tho surface OF the Qlbk.
The prize offered some time ago By the Mol
house Society for a red. or rose. developed on
textile fibre from q salt OF gold. has been won.
1t appears. by NJ. Ordernheimer. In this case
e eEss q sG sSii i iSFf eh g s ssss an P ssss lasssss III + n I'M:
pregnatei: or the tissues printed. with 2 dilute
purpose. as: fer i1sta5es: the weli-known
when the .gold forms ,instantsnseusly on
e cray h pearl. IN very = adssrent. and O. un esSsasi.e!
able. under the influence Of acids and aiiaiies
dist .'s ssins ct fh SsFe ee sfHy; si'a as v s|q'' 'TS Ss f F5S,
itself has sufficient reducing power to accom-
But it's Precipitation 81 reducing agents i;
more c9mrletSs, , and more certain; Further;
he's te Or e1po 81! e't to e q hot n sun cha Sas tens the the
operation. and the VARYING OF the concentra:
t HDa q The en material a ! i'iG Is allowed q to % remain 1%n afnf n tn ..
rsdddsinG val; gives no;nt range ~ o. most + y "a %
ssssfA na An1Sn' that Ro' r.. o. s1t lnssasi i5n Is 80 q q
s!IS% FL =; sssH ssIs sEsS "a: 81 ssiS + b SiesSs'a
Avery ingenious method is resorted to By
ton Of lead. After converting the lead into
chloride he dissolves tho lead chloride in
s ss:sI thisssf . .1S ]ss!ss,f e d 5GS tSD o. soS %.:h g;
Fl R5's SsPssisif.t,s sisS IT, issd from !: t BB:ro sIs::
& 3; s sss 1si3s;xiss s s:;'S5 fsi SIs:s; W.: &, sss: :S;si
into a flask. with two perforations for the In
tSs entranse tube above the llkguid.' the later
posted as peroxide. Filtration is best effected
placed Setween two discs Of ASBESTOS paper.
At the terminal stations Of many OF tho Eng.
lish railways a great economy Of space in the
means Of hydrauIin mac6inery: that ia. st al
these stations the movements OF the cars. as .
thus controlled. ~ HeeordHin asAf to T this se arrange sss
hy Or Il sapstans. " raised from h'onH on nef le 'fae 70 an. q.
other or, hydraulic, elevators. and moved from
Hn' t stass 70 The 4 en pewer G ies al 81 a tho mseSi f1ssi I:
s sepip 7 ,S Ssp epIs d, s sS. d Mrssr act pun onII
pumps ,ioicins water into an una seo sasse
!ec.ed to q pressure which, sometimes rises
to 100 pounds Per SQUARE inch.and from the
the different machines which mare are ali ii 6 E5ssa
by rams. Their action Is very simple-the end
which 'i passes = a rope aa,t or chain. o Ma'e end sf Ssins
fastened to s?me stationary. object: II tho
T P5f.9hi e rs n tSsSSt 70 's so or eHs; 1se ara las' ts snd S Sd fes
is transmitted to the machines In any desired
manner. The pressure pipes. In all cases. are
made Of cast iron. with tho Joints bolted to-
gether. and no trouble has been experienced
ON accoun. OF frost.
The new bearing which has been introduced
lately. 10 n considerable extent. In foreign en-
cheering construction. Is formed Of pIu N
or graphite. mixed with n certain Quantity Of
steatite. a combination by means Of which the
soft rlumbago is hardened so that 1t may be
mONldaA into any desired SnaDo and turnad nr
worked to lit any Kind OF a box. As described.
this mixture. which Is compressed. by. a n.y.
draulic press and afterward baked. Is slightly
heavier than carbon. but much more tough.
and is said TO be adapted for use under heavy
shocks. and the advantages OF thus doing away
with oiled bearings. in many instances. are
declared to be SO great that some loss Of power
In securing them is amply comp ensated for.
Special account Is made OF tho fact that the
coeiicient Of dry hearings Is practically con-