, 1877-03-14

gfoHth Of tho eyBtem dbwh to the tln1o when It he.
came perfected In IT. present form, in 17'1. Tho
system had been adopted by Holland, Belgium.
Spain. Portugal, Italy, tho Hcrman Empire,
Greece, 1soumanEa Bsltish India, Mexico, and
nearly ali tho South American Republics. 1thad also
been adopted In part In Switzerland. Denmark, and
Turkey, aud was being used In Great britain In
matters Of international! transactons, Int was for.
b!ddcn by law In the homc trade. Tho eyttctn Ind
been 1cgatixcd in this country by tho aet Of Con.
grcss passcd in 1870. At the present day II was
ID uso In governments representing fully T. 00o, 600
Of people. Willis the change from tho old syrte,na
10 the metric sYstcm In country like Englnnd or
tho unitod States, was dlIcutt as tho subetitu-
ton Of d ncw language, yet the benefits 10 accrue
from snch change were. In the Doctors opfuon,
20 manifest ~ 70 1*rtfiie all obJcctfons and tho
,asr sopon Of ts '5stem hmp
lowing:
hs.o!otd Ths. the Chicago Academy Of Sciences rea
% aSnsaa az s rs
~ ,t " f.
Il; II; ID ''s5 ss':i'Hsas il With
.os @ hrs, s: sss:' ps.1s: 1t ss:. IT, fs" ssss sss
and mound. touiidcrs, c1hibiting several choics
skns fGnna L. b. iqsslty snd to ase
IL the Identical mound. builders.
HUE GLASS.
The special order, a. IT. wtre,-the confederation
ths 1neeiss 6rs from Ftef Eia. S coibsst, ~ho
confined n!mtolf 70 the mechanical brAne!, Of The
eghject For this pnrpoee hs had prepared q
i1nA OF the spectrum. This division wus that Ut-
ses "sd . .''h hsss,s5s ss5 e 4 Nss t9ss ns
en o5 p a ~as Se s. f.
orangu BY n, yeiiow Gy In, greon lT ill., intisu by
40, md violet by 10. EcWttn had Experimental
In the different portlons 'o3 tho s Spectrum. r
In using tho bue light, about II per cent na
yellow light was usct. and tsie lcss Than IL per
cent Of the total force OF The light tay. The seas
rays, were unequai In their heating properties.
For instance there wae very 1ittIo warming powcr
oss IN ths slns sa .ha: u ibo ei te,
oter IN eaeh Of Ike dIvi;Ions i ani notig i G tho
temperatures to which Ii waa raised, Il would bo
found, on.. carrying Il beyond tho vlstbIo
was no iieht yislis,-s showing that tic invisible
rays pos.e,aea greater healing properties tlan so1no
Of he"d SsS s wa. sS dse b, tho speaker a. Tho
slensal effect psoaaee by tAs my pf light. TIE:
tos,aph's ransi: fur tltsamnee. Was % colorsd oas
coloret very raplily. Tasto wero chemical rays,
!a thu resEou beyotl tho Visible spectrum, -beyoni
scsu.s ha.eses thefe Saf e % ~ saaaSo sS 1T
ioe0phy in tic aub1cct Of Hight force,
ana light. actlntstn. It WINS not very
biue ray wes OF my uayttcu,nF benefit in Tho bus
ray ti,sfa wa very small quantity OF ljcht. -
sc4rcely nnE of The foFcp required 10 prOdTCs
changes lii The chemical cpnt!t1uR NJ hudis fInt
tu The ylHIct rny wns OBTAINED d lafrc atnount AZ
actlyc forcc 10 TINT ecicniFnta mirh1 rcrhnns In
prvraynl to hclicyc that tho acttOtl OF that nv
cpnsime thmnnh a snitahia tnn,lt1I,a unmIs nr5,
ducc ' "S@'- f'1
Hrc,rryyyr m rua ararr..
beneficial in soais cl.cs Ind tcrhapa in}ur,ouu in
nfhrrr. A. fh"e. x"rc nt}rrs Il, suent I'-af
t,nihnft rt.fr.f,Mt frn cr'.s.1nv npv xiaw. ~
fIis s,hf,rt "the, linn .hosr ,Ifssst1~ ,..ncSa,I
with II l., liz n,"r."irst ~ ,nshcm }trsi .S"rt
Trof, icufnIy nc ri took m liz kui,irrI IL, hui
seHH Hat kreat uSal WEE ciAamcH IoF Rtbc klass,
Anu hf lau FGml*ed fe max" sotne experiments 10
sec low GaF tlcet clln1t were FNbhtANtiAtct. IIu
had not bxcn Ablc hutYGYcF, to nuke any guch ex.
reriturta nv ia ytlrhf lin hMl rrnd f1cn
rnxnntnns }.onn s,;i -. ,,a =, ttr r1,cSt,r III
|, s" III s, amu eIs ~ tne tnas
ccpt unu-the look IN Murm0n. f.auKhtcr,l If0
rnne Vi crnsennrnco. jlcnrwetf jn,,uhfrr. + Thcso
w.Ts, m iinHs ",.nartfn fnv IL" h,n,s"w ,!ith w.
,.nv,.". ~ " s.."t's IL % %ts"PtSha M'tn .ne
ptasloas etrcntisIMcer. Fro1. rrahody tnuc-
ca ntnn Gen. tlrasont4n's aCcpult Of bis
EfanE- ftnps, 1l14 fpne r[9q utltF b}Ig Rlu1s
uuf hts fnnt MUS nnt nnt1rr I'm
nrc ~ INV sss n ril n,t lin, .fri. cn1t t"t
~ "nss..t .,. .h's'nI. - % ,"tte - .S 80 tas t.,s
..aipsese1 ~ ahu tHc1t1nHcu ~ "ctSAt ~ rc!! shulk
esats. ~ ilonr otttl!sse euscs fhun1it FfUi !sa.