, 1877-08-02

once sink to the bottom md colo. the liquid lie.
tilcdy. othcr substances wh hach also ft:c to
En1shc,l frrr, coIrcn hy their appearance mn,
tastr. Another simple Test !. to spread the cof-
fec. ont on t!p Of glass. slightly n'oisscn II
viii "atcr mi, then tncll the laYrr indifferent
rresrnee nf *oft, .no1,.rrtlst!ng. forciIn ingrc-
iilcna@ can he readily tlcteStca !f. on opening
the rasRagc, the contents nrc cskct, OF ahnw n
tendency to rake4 the presence Of ca,lcory 10 III
afcatcti.
HOW rnB cArnr MEN DECEIVE Us.
Tho ARTIFICIAL coloring of confectionery nleo
merits consideration, owing to tftr important
sanitary, effects involved. It has long .hecn
ior thls purpose. aud fron, time 10 time thr at-
tentson Of the puhltc Is directed IL tho subject
BY SONG l,aftir'1ar'y aagriyatc,! eaac rorltn. 10
light. \ lev AlaEs ago live b'stnf, tnnfecttoncss
inRrctlcnts in the manufacture Of candy. and
HostnM confectionery. It germs. Las hitherto en-
loycd very high reputation fer purity. One
Ut Tho most common anil tlcfcterous substances
oflead which Is employed Tor The production Of
yellow color. lac(, another tayorlta l,lc, IL Oh,
talnct1 by tucans OF cochncal, but such robson.
o!ls conlpounds ~ rcd lead and vcrmflton are
and blue colors. which are forturatcytess ntten
met with, are ,,s,.aily. produced by tnenns ot
t'russan blue, brunswick green, schccl's green,
&c., ntl Of which must be clapsei ~ vcrs dan.
JtlCBt EOlITS GILL OE OUkn1nEu
by using vegetable dyes whcl, ART quite har1,l-
less, aud, although the tInts arc then less bril-
liant this fact Is certainly cxcnse Tor resortnE
to Ensspnout pigments. In Tegari 10 the tfcter.
ion Of tho worst of tcsc substorcct. ehroinnteO Of
lead eau Ia recognized by touching tho yellow
oart OF tho cnnay with drop vi hydrothlortc
actti, then nth little sulphfdc Of ammonia,
when black color will be produced. IL the red
colorinR matter prceEnt is corhincnl II will ne-
QIre Rlnlrple color when immersed In solution
Of potassa otherwise there Ia reason TO suspect
The presence Of the more harmful rcd pigments
mentioned. The tcsts for the various kinds Of
blus and green colors arc less simple, bHt
copper, which Is frequently m ingredient Of
these cofors, can be detected BY the method
described while treating Of the acultcration Of
pickles, the candy being dissolved In water and
a little au1phuric acfd aided to the solution be-
fore tho irun ID Immersed.
THE WAT To sfoF THE AnUi.rKMATiON or FOOD.
In most forclgnroisnttfcs effective means hnvo
been adopted to expose and prevent the adul-
teraton Of food, hit with US little Inns been ac-
compllsicd IN thts direction. In Europe Boards
Of Public Analysis are appointed, vino carefully
examine suspected srttclca af fuod; hero tbis
duty usually 1evUlves upon some mrmber Of the
loIal Board Of Health, whose time, ~ rnlc, Is
fully occ1lpied by other employment During
the Inst few years our Custom House officials
hive exercised c0nmendable cart In regard to
the quality Of the drugs admitted through the
eustosns, and the question naturally arIscs,
8hnulti not nt least equal Importance be at.
tached to the subject Of the purity Of the food
sold by our groecrs and consumed By our fanf'
lirA3