The sun., 1894-04-01

| The attention OF the Royal Society OF Great
Britain has been directed to the electro chem
ical effects on mssnetislnR iron. the ex-
perimsnts being As follows; From long
finely polishei rod two steel bars were cut
adiaeentlS. go that they we're practically alike
IN general composition and structure: these
bars were both weighed. and then immersed
| in euual quantities OF cuprio chloride solu-
tion. one Of them having previously been
magnetized. After a certain time-six to
twenty-iour hours-they were taken out Of the
solution. freed from deposited copper and car
bonaceous matter then. dried, and again
ssnsea 5sr hsS o.t mora IN woiSss ebns
the unmaRnetized bar. that is, an average OF
speas. 81 eorrosios IL the ste. due 10 mag
netic influence. OF about three per cent. un-
der the conditions Of experiment
One OF the most learned Of modern geoio-
| Rists. Sir William Thomson, has expressed
the opinion that for the last e6.O00.O0O years
the rate OF Increase Of the earth's TEN petaturs
under ground has gradually diminished from
about one-tenth to about one-nftieth Of de-
kowerer, as to tho date of o. the % consoiidstion oi
| the earth -based on the assumption that the
] ssrious OSiections one most fopcsls s. be-,
ing that. as the solidincati9I Of the earth prob
,5n. r not S1y sSs
yiscosity. II, then. the interior be viscous some
%u:s s'ss n 'ss s
gensrstsd II the yiseous portion and and The
scisntst viz, that Il X only those strata which
sneass MhsS o% are Nseos while he eenI
portion is rigid. then. when tidal friction does
as ON tss RypotRsss Of the ~seo.s 81 The sS
tire planet; but instead OF being distributed
tss ,hs ssd Be opnS IL
more superficial layers
The Gilbert theory. recently propoundsd By
the well-known scientist OF that name con-
cerning the moons face. assumes that mate
rial constituting the moon once surrounded
ss, ssssth in the form - Oi i sHsurnap sn rinS;
first gathering sSCand q large number Of
nuclei. nnally all uniting In single sphoreT.
resutins res from the % coflision oi the a moonIsS fs
Is argued that this hypothesis rec9neilS. the
pnsr and explains tSs ssund saes Of COZ
ldlnR bodies oflarRe magnitude. such hsystem
sss ssS Ssn hi S tn: dS sS.asS% Snss 81
sse inner % psns snd the sssSsintion OF inner tS
PssaIisritis. % inoWn n ss insiows .caipturs.
rills, and rill pts Further. during the growth
%os snf have saA s s.ss
aud formed impact eraters. Witch have been
I Is suasested d eioa as pSssi that thsss eol:oas
initiated not only the differentiation OF CONT.
cns ct o %sios ta ssooss
structure 10 the record.
The prominence OF nitro-glycsrine a. Q
component In tho manufacture OF explosives
at the present time 10 specially noteworthy. In
view Of the peculiar oircu umstances attending
the discovery or chemical development OF the
nrst-nsmed substance. OF the principal of
siyS;rins and twenty :hvs q infa.ori.l earth;
rock: forty part: nitro. sycsSins., iolsy
q eeiiSio.e. and seyen q Qua psrafins:
giant powder thisty-six parts Of nitro
ash Rh'orsd or soda. eight q suiphur % and eight of
resin or charcoal: mica powder, aity-two parts
led mica soDlss ts. two and q part:
o. Guncotion. and forty. seven and one-hali OF
parts OF pitDo-elycerine and eight Of gun:
cotton; atlas powder. ssventy-fye parts Of
two each Of carbonate Of maRnesia and nitrate
OF soda
Paper tubes for holding yarn or thread are
recent English invention the design being to
punch holes through the sides OF tho tubes. al
the same time keeping them as strong as un-
punched tubes. the holes being for the purpose
OF giving the surface OF the tubes more hold
slipping on 10 accomplish this the tubes are
shape poriqn ot the .res Ssnr me
previous 70 being rolled upon the tube -eOiline
81 P'As paper - for%ine fii W tho last. few s'a Laps l
at the outer outer d,a surface % Of THE the tube is
made by hand fed machine the slips OF paper
are cut in the ordinary manner and number
Oasy % Sunohsd & with holes: but but when % made IN an
antoma,is machine the paper ts fed from
REQUIRED place. before the sliD which is 70 form
the tube e /. cut M from the web: Il I; much pref.
I srior to c the "ppicstion q S the passe Tubes
thus made do not have holes punched entirely
@ ssra. @ and = Il: same " t%s sA rstsiniSs % S The x:
simple method is announced for obtaining
. durable white paint. one that overcomss the
general objection to white paint. viz. that on
exposure TO heat. and especially to gas flames.
lamp shades. ceilings. DC. painted with oil col
ors. II soon turns brown. owing TO the cAlcinA-
tiSn Of the & orEsnis mater al e S sontHinsd nj In the
sS anS sss 1 sno .s
S q s d.s % :Gsq q .ns .aI
to be painted are first thoroughly cleAnsed. and
seid Is as nc The
subsequently cleansed with water, and then
on until the article is deemed sufnciantIy GOV:
cred an interval being allowed. but not of
coat. as such paint soon dries. In case Of .
large surface. such as ceiling 20 be covered.
the chemical action Of water.clsss on zIno
white is soon to render II thick and hard. This
paint Is represented being unaffected. al-
ways remains snowy white. only becoming
soiled By dust and SCOT.
The Interesting fact has lately appeared In
certain chemical operations that prussic acid
10 one OF the products OF tha action OF nitric
acid upon sugar. 1t 10 well known that by
acting upon sugar sawdust. or celluloss with
nitric acid. o1alic acid in tolerable quantity 10
produced. IL seems that. In the course OF an
experiment In this line by English chemists,
nst sstss tba wsasnea s ~ hrst ,eactao 1
ceased and the evolution OF nitrous fumes had
beyond doubt that prussic acid in con
siderable quantity was present IN the
liquid and. on submitting the latter to
tistillation. prussie acid Was found In the cons
densed products, and a larger Yield Of the