Macon beacon. [volume] (Macon, Miss.) 1859-1995, 1878-09-28
POPULAR SCIENCE.

A MAN in Milan has devised a system
of music photography. He is already
ableto take down some airs us sung
without u mistake.
ULTRAMARINE, with the further addi-
ton of Sulphate of tin and alum, IS sand
to he used for improving the color OF
certain kinds of powdered sugar,
CoTroN goods are now more
and more weighted with chic
ride of magnesium. Certain shirtings
lose on washing from 10 to 40 per cent.
of their original weight. The chloride
Of magnesium is sold for this purpose
sometimes openly under its own
name, and sometimes AS "crystal size
Sulphate Of magueSia Epson salt) is
also used for the same purpose.
TIE Polymicroscope is Germany's la
test contribution to microscopical sci
ence. Ii is q contrivancs which ma
bles the observer, without change of
/ slide or re-adjustment of object glass,to
study sixty preparationsunde his micro
scope, in immediate succession. The
principal of the revolving stereoscope
has haon onr1io1 in tho Construction of
M, II noroI a6noratns Inv Herr Won Len
hossek.
80 i;'fn"mish bo,rocn ron md steel
t1oI, TLoy baro tbn same nolisb and
,yrnrEmonshjr nee viii commonly alone
/ sLn", tho Jin,ronce 70 mako t6e dis.
t];no,ion ,nirkIv nIaco the fool mon q
stano aIId Jr9n' mon il soma dilntq
Miro acid (fonr narts wafer 70 one of
anfaN If t6a toGI ramoins clran if is of
iran if If steel il will show n black spot
whore torcbsd Inv the acid These spots
oan ho oo.iIy rnEhnd off
ApVLTEHAthp NiNh'Ah'-n-coeIu
Ch!cago sent TO Washington more INA
I,VOO DarFe'S OF very sour Nl'eSaI' "lo
81 so cheap It price thay II ctea'ou SuSPl
con Analysis SnoWco tnHv " VoI'IIn'
ca some W grams OF auhyutous 'ulPn''
TIC acid per SaIIon, Oh "nltn o. gram;
were conoileu Win iIlhG' loIiDInS -
grams OF plas'er' noaIu % lle"!'l
SalG very polhteuly lh"V on Oh VlIrlo
lsu'phurlc aci4? coslS . Genus q Poqnu
"uo one Pounu Is enouSh 10 lIIAc " oaI
po,r No Wonder thot II i sold chcop
C,
MENnht'Nt "AENENI9 r~lNE.lNHor
NJ o~IepcI"'n' VI btes"eI' n"s peci
experimenting WIN u yieT 10 nllu SON
GneaP substance INA "oulu PtG'olV ~
UlcS cIlIhiilS lro,i' puILLlS WIN 'ait!o
.'e"h solutiohS ul "IuIu "elo my saV'9
I9cIor{' ouU D per cehI' soIuIIon o
PhoSPHaIS oI a-lnllouIa proved guy,
successful :ne IhPrpS1a.eu cIoVncS ui'
noI ourn WIN name out were nleIeIj
u~tsvIoy'u py catoonlAa'loh, h"olIS' !
solulloh containing percent aIuil aho
. PoI cent phosphate ol "lltloD'% wa
Irlco on LHel ana woolol. s'uI H. ileI['
soo' vueIG was no burning lHo SUN
Ire"leu "ltl PnoSPh"Ie oi "Ii'loil" 9lC
noY eSen pu,n "neI 'uel nau oge'' w vi
orou5Iy ruopeu W'V4 SuhPQ"utr' lh'
powder i"sncu, ouI ieiI the luI!9 ul'
consumes; hG cloInc' Io'g : IN,
c14lpu'ylolIIIy' however y geLLlng we
OF Oeing Washed, II Is a uiS"uyall'age'
TO-, IIAD they can only oe "oI" Ill cel'
TAIN places
EsTMATING MEASURES 1t is often
useful to have a few approximate data
to deduce weights and measures from.
Here is a correct table, which, however,
does not aim ut great accuracy, but
may serve to make a rough estimate
when it is necessary to reduce meas
ures:
A pint of water weighs nearly / pound
anu Is equ'i 70 "oouT - Cuolo lncneS; OF
d Squire DoN . llcHe9 loHs' llches
"IIc ana . IheheS uceP. ,
a gu"'I vi ""'eI WEIGHS nearly j..
PounoS anu - equaI 10 a square o9A OF
"oouI ny llcneS "ho % licheS ueeP,
a CANON Vi "Sler weighs from 90 ~
pounds according 10 llle SIZE OF lhe
S"Iton' "l" Is equa' 10 ooN . oy .
'lcreS Squ"lc' I'LL" " OF % Inches
"etP.
co ouoIc iooI Vi water "C'S"S heariy
oo Pouhu' (liore correctly ga PouhdS)'
ana contains rom , 10 . gallons ac'
corning 10 me Klnu OF gailohS used. ~
"A peek IS equal 10 " ooN . by )
square an1 lhches deep -
a oushel almost ms Il box Il by Il
lhcneS square, ana "a inches deep, or z
cuolG leet;
a parFel Oh water almost mis- a box z
ny = leet square ana - leet oeep' or u
cuDic leeV'
feVrolSum partels contain Az gallons
or nearly 0 cuDlc leet'-MdaY@ctureT
ana D"IsaeT'
THE UTILIZATION OF WEEDS
Ralph Waldo Emerson has described
weeds as plants whose use has not been
discovered. Too often men are content
to call a plant u weed and then proceed
to exterminate it without making any
attempt to find out its possible uses. An
Indian writer, Mr.. George w. Strettell,
considers from his experience gained in
the Indian Forest Department, that a
large revenue might be derived from