The sun. [volume] (New York [N.Y.]) 1833-1916, 1892-03-13
AolAs oy .se,xscx ...xo 1SDusrsr,

metals and alloys the Same method with which
he dctermined-by means oi the electrical re
sistances the molecular transformations IL
metals ut high temperature. The conclusion
At which he arrives IL that The. metals whicf
shoT no molecular transformation before tns
tons are = ltnea; junction II the temperatures
have sudden variations In Their aw of growth
s"SI Mhs S rnf fsHs
place within crrtsln limits of tempcrature ant
AnctSsr atsrsns made sv Gr Hy tSs
rcsearches u NJ. Ohateller in this direction Il
that The mutations Il eIee;yis rssistanse 70,
analogous t"fh"t d platnnm AMI It's alloys N
One " the n,pst curious developments OF
| commercial enterprise nnd industrial inge-
| nuity recently exhibited Ia tho importation
! into this country OF n peculiar vegetable ma.
trital from Oran. q n Algerian seaport on the
Mediterranean Scn. The nbre 81 this sub
stance Possesses the quality Of being 80 elias
tic that it can hc used as Il substitute for
nr1tTs AMI t the F. IN tns az
indeed. and 80 essi!y affected by higher tenn
grass is that Il. tbrives only. around the vol
within short distance Of tile crat.rs them.
selves tho Inter being always in q semi.
k'tire STATE. ANA inc enrth Aronnii 50 warm
ever soon to grow excert this. steel,liSe prod
, net. ard the practical! v.u. Of which is likely
TO 1e luliy utilized In future.
In DinVho's Tnv,rchnic journal DR.. Schott
calls attention to the necessity. In the manu-
fncture Of glass for scientific pul poses. 81 the
cautious use ~ nlkallcs. in case such glass
contains any ho-ic or rhosphnr acid, tho fact
eng according t. DR. Hchott. Tint II any con-
si.S quantity Of nlksli be,pr"ssnt the sr,
"oring !" this writer II a glass, te a, .ail dis
ssrviceatle by tho n iition Of variable ,Iuanti-
ties Of nlnmina. zine oxide. md similar my
rnss Tho Sxis Of shaa Th
,h.t crow, glass. which contains OXIDE o.
scarcely amy GiSpersiSe action.
For facilitating tho process ~ scourin. and
drcing hanks Of yarn. mechanism is Ivw
proposed consisting OF series OF rollers or
sr'ndles mounted in franc and carrying the
hanks. this frnme having a vertical recirrorat-
ing movement given to II by means OF chains.
three OF these teih. connected to ruleys
mounted on an osoil!ating shaft. the latter re-
ccvnR its movement from another chain con-
nrrte,l by one end to mounted pulley: the
other end OF the chain Is connected to II stud
9Sar"n the striving shalt of the machine. As
tn- dick travels around with he stud toward
int s 1u sne on
hrt withdrawn. a loose copper roller serving
to ke"p each series Of hanks distended. Tho
role, Oh which thew nre mounted by means OF
gearing Unions, the two central plnI2ns being
which Is fixed ratchet wheel: this. wheel is
actnatet by q pn%l AMI lever. tn. latter re-
csynG rs ,b m I'll BY the reel protinG move
The triple expansion mill engine. lately do
scrioed ms having been erected for flax spin
ming mill in Belfast, Ireland. secures close
regulation By means OF two governors. and
each cylinder hns four Coriss valves The use
% n supplementary governor remarks me-
chancnl journal is becoming almost uni
a necessity: the main governor has: OF course.
IA corresponding speed for each position in It's
e tsT w rsns h
would run at the increase corresponding
with the new position Of tn" governor-the
snd varies the lenRth If the rod connecting
the main governor with the detenta. the result
hiring the engine hack to tho normal sneed.
IN practice. the action ot the two governors il
slniutaneous o causing tn l., variation Of speed
mentary. even under widely varying loads.
NJ. Lnpirre. a French artist. states that in
demonstrating that sulphur melted at about
1I5' can be cooled In paper. he happened tonss
II photographic card. of which the edges wer"
turned UP: upon tnklng away the cnrd it was
discovered that the autographed characters
w.re clearly and distinctly impressed uron the
CODED sur!nre 81 tho sulphur. remaining thus
after hnnl friction and washing. by repeated
experiments in this direction he has surceel-
cd in obtaining results "t very satisfactory
character. removing the Paper each time by u
"un IN n ,,"i. thai, smirins will receive i'm,
'ress'onS from and Reproduce. IN faithful
%r ae!Sss w IN n
t';ugnrhical inks. china ink; li!hosraphic
mss wL"th"r c'i'rrd ar uncoioreI varie:ies-
and others H.. a - stnt"- that 1t will rerlo-
t.uce with Iemur bic cNactitude maps.
In IL recent article on meteorological rhe-
nomrna. in their relation to certain questions
now mu,h discussed. a California writer ar
cres that the ano;iGt Of moisture in the atmo-
splern is much greater than is generally sup
posed. its capacity for sustaining moisture de-
pending mainly upon its Temperature: thus.
tho rtn"srh here at 1UO' Fahrenheit ut the
earth srriace ~ "a 'nGir u! sus!ninnC. in nm
invisible form. mnistnr. t" "ne-ffteenth "f IT.
weight. yr an equivalent II ono pound OF water
sorn what nm Immense vo!umn o: water may
POSSIBLY re iii charged over any given area
Y..rn tar' ntnnsrhrre and "locti ir conditions
are "a .,ra'le for its sudden; condensation. as
IN the case NJ WTnI are c,kileHl 'i,bu VI
Tho ia',er. this writer rrnlarl:s in explain tion.
that warn currents % nj. highly charged with
p,.,stuir. are frequently WAITED hy wind over
mountains. wher" they meet withn gold ntm"s-
pne;e Il cold cu-rr1., wiiirh s..,ldrDly - 'nia
d"ner iart elouhs. hat sometimes drop their
moisture in nrndiS 'nns cHtarn"ts OF rain
"riou .hurs;s." .s they nre usually termed
Workers and artisans in metn!u"gy vii b,
in, ore i oil in tho for;iua. lately published. II
Hrry IN n pro.ess f,r coating sheet iron with
lead. by means Of which such !. lmirable :e-
suits nrc obtained. In accomplishing tiis re-
suit. tn. metal is !l-st mad, free OF sraio by
rrr,tns 81 hot dilute su!rNuic ncil. then
VIZ med viii. water. md a!tsrwar transferred
t. N vat containing n collation. 1T lime or other
n!E;l,Hs "on,l"'und. Which -eiXes TO !"evr9t
n w paced ia |. .lilut" "'lution ~ zinc chloride
cont IN ny on thu average tw'nty pounds "f
uxn,i" acid and ten pounds 1T sodium snphite
peg tn ~ icon tr"d;eh these quantities DE-
mi, nnrrs!on the sheets are passed through
melted Lad unl aiiowo! , drain.
The conversion OF coal dust into fuel has for
a lnng time bccn accomplished by various
III.