The sun. [volume] (New York [N.Y.]) 1833-1916, 1899-12-31
NOTES ON SCIENCE AND INDUSTRY.

ton OF tho masterpieces In the galleries OF FroPe'
1t differs in ITS methods from any hi'h'r'o ern
ployed' inasnuch as, by special employment Vi
Co.., r,t.,, 80, I'll, o., noa,o ,r,,. ,oc.Ir,,lo. ~ the
,rs,,,,i 4, ,y,rr ,,,,iro br, .lso to pr,luce tho
don,h M ,o,o-inr az u,,, "a tho pecu,iar,tics OF
,,arror ch,r,c,or,vn. o,ot r,..,.r Tho process In
ouo.,ia, .I,ho,,,h an ,n,r,c.,o and ro.,iv one ia
s.,I No, a., h.vo hoo n.,o,,,l but .tr,, .corecv ia
ton, a. O., ,, r,.,tnni., IN =, tho ria,e. 4, certain
-, Tho .,,,o. ,hr,,,,h ,,b.h ,bev have 10 mas I,
scons ,,,, ,ho co,,.,, oon,rolin, tho rroces. bas
,,.ao .ol,,,o,. s,o,,, ro,, c,,s.ic,i ana madam
n,in,o,s .rci a. p,nh.o, Nr-,I, n ,sm,,n dor.
hal, ona o,,nr, anI ,,,.- on ,ha comn,nv viii
s.i.c, .,o,,i ,.,n,i,,,, no An,orc.n sr,,sts Cor
.inu,r ronro,,c,o,
Hh wen known tnat IN inc manufactured csroon
steel microscopic diamonds are formed. ana the
curious tactH stated 10y the Se'en' frs" that from
the examination OF snumber OF steels from variety
OF processes. Identical results were gwen piece
weighing 100 grams was cut from lump OF st'ei
and treated with nitric ncid tue insolubio residue
corrected oetns manly graphite carbon; AFTER oeng
washed with water. IL was boiled three times with
re.iduc-hydroaroric ncid and then tuning sui.
phuric being u,ed-there then remaining nothing
but graphite. which, after being Washed was melted
with chlorate Of potash. Tho insolube residue OBJ.
Ia ned fell TO the bottom Of q vessel allied with
iodido Of methylene tho little transparent octahe.
drons visible through microscope, which burned
on q sheet OF platinum without any ash, being the
diamonds.
r.. ,...,. -, ,,,,,, l. .,
s, ". ~ ~, "" - ., :, 'usOuo'u :.
a, ~, . -, 80 ~ s, - -
-, 1, -. 49,, - 49,, -. "a
80. . . ,''e'' 80 $40 ~
- s.,a1r, , -. =. - -, -, ~. a.
", a." ~ ,"n oo w
p ,' no ,' ''o'o W. So, - "
'''"'''' "'''"" '''' ~ ''''N"' '"s''
" ~ "''ne w" =, ~ ~.
80 =. '' -
49,, ", ,"'' ~, Wv eAs ".
l.'o, VI e''a,'' '"-i',' u"''n@ .'.eu. 'o"'' "
pressurca Is but the part Of reason 20 admit that
the discovery, by means Of LIQUID air. OF q way 10
attain vast initial air pressures opens the door 10
higher efcon, les and greatly extended utilities in
the use OF air power. A. liz we'll known Of course,
the common practice is to compress air 20 pressure
OF say two thousand pounds a SQUARE inch for
OF s,orag, and transport and then allow
Il to cSpand I, a much lower pressure and to bo.
come heated in water APPARATUS before Il en-.
tsrs the working Grinder
Sir william White has stated before the British
Assochtpn or srienee hi7 belef that tho maximum
ofsp'ed in steam navigation has by no means been
reached yet and tiat both increase In length and
weight !avors tho better maintenance OF speed at
sea- anu ths oeing the case the tendency Will he to
even greater regularity OF service than at present,
and thus quicker passages will. 10 some extent d.
mnish risks A Indicating the progress made In
this line he in'tanees tho fact that in isAo tho side
wheel ship Britannia. 2oI feet long, 75ohorse
poNV, "a.h.aneu s,, Npeeu VI Ao'u. "'ah' Aua
{ a., -, 49,. -, ,.., -, :. =, w.,
49,, 49, a"' u.o
20 -. no 80 aH" Wv
-. a., ,s,o .,.,u,... 80. -. 60. ,n,,'
| ,.,,, 80, 800. a. 800 Wv. I $3.50 -
49,, q. ,..,', 49, - -
| -, -. -, -. - =, -, ~,
80, - $50, 80, 'N So v.
| $500,
by mcansof IN ingenious. though somewhat com.
pick process. II II now found possible TO extract
| quicksIver from cinnHhar The ore is in the frst
place crushed TO fnc powder and then treated TO a
hot solution Of sodium sulphido containing caustc
soda The watts in which the el'ctrolytic treatment
takes plH'o are o: iron and serve ne the catholics,
while tie aroi's are pieces nj sheet steel The mer
cuy Is said TO he rca lily separated in tho upper part
n the cell aud Ia mixed with equivalent amounts OF
tho lower or ,nodic commandments tn. solution .,ter
le,yin. ,h4 cell p,s.e. through s,,ie. OF yes,cl.
/ IN which m. silver ia dtsnl,,.d nv conner co,uo.
canal 10 about oue.tnu teeuta OF the vcvh, Of lin.
alloy is here consumed 10 secure the prec,ita,ion OF
the silver very small trace OF tho latter remain no
! in the conner After passpr through n scrics ~
| sulphIde solution BY ,l.in- a current density OF n
| 10 Amper, per sluar. dccinet., aud an electro
motive force OF two volts III. elcctrolyt. can b.,
nae AGAIN for IN. n,nt Of crcsb or. After IN.
! addition Of suIphur
-,
. , '' " w s'N,''"s amp
Us '"'"S", ny e'''''' WIZ "'sc'i'u-N ",i",h''hed
rot liIh' simultaneously by simply turning on the
current tho rod o. refractory oxides EaS hrst to DO
4 heated Tor "'i'h purpose two devices are used.
namely snail spirit lamp that requires TO no
lighted WIN match ana turned out when the elec-
tr"lyt' las become hot and begun To glow, ald, fur
th"r. hthtFin III" form ~ a col surrounding but
not touching the in'And sent glnwcr-thiS heater
/ being supplied hy the clrren' from the moment
when IT'S turned on ana so arranged that on the
rod becoming hoatei an! beginning to glow the
heater automatically cut out Of the circuit rrllps.
ing into d'rs' nn'i' n"eio aga'n to iht the lamp.
tn" Largo expense thus involved ia aser!ous ohiec.
mnn Them TOO. the lie or tho ncandescent glover.
II op'iatd ~ SO hIgh iemp'rainrc as to reach the
otn en'lency, docs ho' exceed 200 hours AZ against
| Uou 10 l'ooO hours OF the carbon h!ament