, 1874-06-20
SPARKS OF SCIENCE,
ExrtEo,unrtNn F}nEs IN ar1rpudfur,

xxrtNou1nntAa f}aEiaa OK an1rroAnp:
DR.. sohuprort, Of Now Orleans, proposes tl1s
! following Ingenious and apparcnt1y-
moti1od for o1t'nenislltng ilrea Oil Bhipboard
| At g!von points III tho bold aro located boxes
containing narhlo.dust and carbonate OF lime
From tho deck d loatl plpo communicates With
| thoBo ho1eH. When fro is discovered in the
hold, diluted sulplnro acid ia poured Into thu
pipes, aud, coming In contact with tho li1ne mt
is'nrtlo-.ll4t, croatos lArge volume Of carbontt
no'd gas, which Is fa'ai to fro. AZ this gas I!
ho9vier than mir. It would remain III tho hold
aud oIeotualEy smothor tho flames.
NEW REMEDY FOR CHOLERA.
During tho lato ol,olora -epomie In pieuna
new remedy, called camphoreln, WAS used with
great SUCCESS In tho hoepita!s. It IN prepared
by pansng CHLORINE gas into pure turpentino oil
until saturated. Tho result is thick, heavy,
oily fluid. Of brown color, and with HttonE
hmoll Of chlorine. It Ia freed from muriatlo acitl
by washing with water. The rctnoav is applied
by placing portion In tiat vossol, a1,tl hold.
Ing II to tho patient to inhn1o. Tho results at-
tonding this method OF trcat,nont nre ropariol
~ indicating that oil Of turpotitino IL tile bost
Absorbent OF chlorine gns, aud thnkt tor0fore,
1t can bo dmptoyod with udvantRgo III operations
piml tasbB wtero chlorine is to be ovaporated In
largo quantities.
1HoH-MASuFhCTUnfSG IN RUSSIA.
Rnnhia abounds in iron ORC, and Inns developed
considerable iron manufacturing industry, baaod
wholly upon charcoal as fuel. Tho waste aud
ultimate extinction Of hor forests aro prevented
by 8gstom Of checking them on into districts
md cutting the tinbor in each district at fixed
intervals. Tho timo gonorally allowed for tho
growth OF wood Tor fuol Ia sixty yeara; but on
tho lards OF Quo eatablialmont in tic central r-
allow eighty years for rogrowth, 1l,a catabl;al-
mont expects to DO nblo to make, from tho char-
coal Of tue surrounding forests, 1900 tons Of
iron annually, without diminishing It's sourcos Of
funls 49,.
FERRIS OF THE sEA,
A return recently presontod to tho British
Parliament shows that 1000 more aoamen were
drowned In 1913 than in the yoar previous. Tho
deaths in the morchant-marine waa In the ratio
OF two By drowning to one from disease or nat
ural causos. Fourtaen mon wero drowned In tho
morohant-sorvico to Que in tho uayal-Bcryice.
For avery nina Of tho homo population who sur
killed. or drowned. Whllo 2,231 aallors vore
drowned by shipwreck, no loBa t.an 1,093 voro
Waslcd overheard or otherwise drowned without
the loas Of the ship. 1t il curious that sailors
eau lo found TO man tho shipping Of tho seas
when their liYoB are subject to auch au excess Of
porl aud lnrdsh!p.
sEA-sICKNEsa.
IL. Pcllorin 1atoly read papor bofore tho
French Academy. combating lilo genorally-
accepted theory regarding aea-Bicknoss, namely:
that 1t IL due either to congeatiou Of tho brain
Or to n comlnotion in tho abdominal yiscorn,
caused by tho motion Of the vessel. IIo attrib-
utea tho malady to a doranged circulation Of tic
blood, produced by the alternate rolling apd
hoaving Of tho vessel. Tho result Of thiR can
not be congestion Of the brain, which is do
prlyad Of some Of the blood necessary to main-
tain stimulus. Tho sensation in sca-sicksioss
resembles that felt Immediately aftor
when the patient Bits or standa,
yi1: 4 disposition to yomit, or act,lnl
vomiting. ii. Pollcriu mentions, in SUP
port OF this opinion, the fact that peraonH who
IN n mich sliEhtsr dcgrce whom tloy nro
IN n horizontal position, Tho rolisf thus Afford
cd being like TINT which is produced IN tho
position Nhen person il in Btato OK syncupe.
1rouTS1Sa-nops.
Prof. John Wfan recently read paper on
" Lightning and Tl,unde,boitB before tho
franklin Institute. Philadelphia; iii which no
expressed tho opinion, deduced from extended
tAas tho lightning-rod is utterly
useless as q protection from tho thunderbolt.
u II the rod" ho remarked. "could do. what il
viz: draw the suroharge Of olcctrlci
ty from the cloud silently, disarm it Of it's forco
BY drawing it III silent stream to The poiut Of
Tho rod, not a bolt should evor losccnd upon IL
building III philadelphia, with its thousands Of
rods pcoring toward tho cloua-rogion.'
Ia tia prnfcssor. thai has yot beon proved ci-
i,cncions il tio metal rnof. rho rreatest dam
nee douo to a building thus protected iu tho
nHfornt;on of tin metal at the noint whore tho
,ot ~ r;tos. md thin is. in tf,o heaviest dix
'harees, not over from q half 10 M incll IN
me- ] oyor n auarter Of q. century, lie Professor
las m noted no difference in thc mechanical ef-
without rods, aaye tint nearly ali tho CAGES Of
igtmtiun wurs presented by buildings having
ID @ htn,nr. .couductors.
49,, 1r,,, ~, m -, -,-,.urn,rs
TIE osaioN ~ '':s ..an.s n.nn h.. ,,,,r
ncar1..n ~ Int Ut iii III ma tin or snail sea]e theTs b.
H ouiy about 20uo 0U0 oysurs to tisl which arc cs-
tMateu to produce uet revenue 10 ln6 doserh-
aens ~, - @4''o.'
Ino soaa. =. ,e';.. ns -" . aa, .,'.;t tr,s
sa Ino i.. in0; :; ios, On noa son ~
pu. ;,.. 20 e.as a,ssa a,nos;+a 49, ;aos