The Anderson intelligencer. [volume] (Anderson Court House, S.C.) 1860-1914, 1879-03-06

acid. In this vessel have Gne white
| powder IN mass, ~ yam see: il IL pure
bone powder. Now, this is composed Of
lime and phosphoric acid ii is a phos-
phate, but not n super phosphate Of lime,
because il holds three parts Of lime and
| only one Of acid. If il was like the pow
der in this vessel have in my hand it
would hold only one part or equivalent
OF lime, with the same OF acid, and then
it would be supcr-phosphntc.
! al.imc is a substance the nature Of
which you very well understand. bnt If
| phosphoric acid yor know les. can
sho" you here upoI the table this most
interesting acid in two lor.ns; in Tie
phial have what is known ~ gkrciai
rhosphoric acid. 1t resemble. ice, and
hence its namc--a very beautiful sub
stance, hard, transparent, and intensely
sour. In this pnial we have Il in the
form Of u clear colorlcss liquor, about as
dense as syrup Iliio is prepared from
lie jet black snpcr-pho'piiate ypu see
upon the table. Pho>pluric acil il IN
indispensable constituent Of plants; not
| plant exists which lias i, not ll0" it
happened 10 become necessary III plauts,
this wonderful acid. We 10 no, know. In
bones it exist locked up most firmly
Every mo!rculc or .i,ilc particle i, in The
embrace of three molecules ar atoms Of
liInc, and they hohl it 80 tcnaciou,ly
that we cauuV, make il available fpr
the molecules asun'l'r and drive the line
into new combinations 1'hs we :,crptn-
plish hy the aid uf strvn,; suiphrric ari
oil Of vi,ricl
Now, let " undcrsta.ll this matter, 50
that when Mr. Davi. mixes that fiery
liquid, that carl,uy o. yiiripl, with those
two barrels of bono charcoal, we Shall
know just wha, haprrus. Nitriol, you
say, will hiirn our clothing, our hcoh,
and So it will, and set wc arc gpin., 10
pour it on 10 that bone, and III one hour
not all ounce Of the yitrio. Will eA!st as
such The black liquid wil Sccthc, aml
boil, and hot steam will rise, aud in one
hour you can put your h..nd into the
mass, aud handle il IT, Nuu can sugar
What occnncs of The yitriU. ! viii tci!
you. Th" bone is cnuipnsc,l IL sc haze
said, Of three equivalents, Of lime and one
Of pho-phnric acid %Dw, the vitripi has
strong liking for liinc, or il srizco hold
Of it whenever il can reach il, aiil b..
comes locked up in it,, embrace and .N
ph,tc If Hmc' is ltrmcd I'hi4 is the gvp-
SUM, or plaster wili waic;' YOU are wcil
acquainted The whnic of lnnt ten gal
Ions of acid is ln l,'rnlnc luckr,i ur with
the lime in those bArrrls OF bone, and it.
viii disappear in lis new combination
cpmrlctcly. and now yuu ask, what be-
COME, Of the phoVhorjc acid! Well,
that is II pertinent question. As soon is
the vitriul scizes HE lime, the pho7piioric
acid is set free as it were, but II kind OF
vacuum exists; the condition uf The acif!
is an unnatural uiIr, and hence il asso-
cintcA itself with an amount Of water suf-
iicirnt to replace the lost lime. Thc
yitriol will seize but two Of ho three
atoms of lime, AM! so the Ihoaphoric
acid is left in the form OF what chemists
designate IL mono calcic phosphate: that
is it holds one equivalent Of lime and
two Of water, an'l now il has become ',i-
uJlc We have prepared va, full OF
Supcr yho,Ihrtc, and that i. composed OF
phosphoric acid soluble in water. lime,
and gypsum; hy far the largest proper
ton of the bulk is gypsum.
1t has been my cndcayur to avoid the
use Of technical terms, the true Iaugungr
Of chemistry, in order to render every
statement inlciiigiblc To you. will now
venture to put upon the hlaca board some
make very plain the reactions or changes
There are three forms
Of phosphate OF lime: that is, lime is
held by phosphoric arid in three proper
tons, md in naming thom ! must use
tho chemical terms. Your attention is
called to the illustration upon the black
board: