The Brunswick news. [volume] (Brunswick, Ga.) 1901-1903, 1902-11-15
SEVENTH LETTER ON AGRlcUL-
TURAL CHEMISTRY.
Continuing the Letters of State Chem
jst to Georgia Farmers on AgricuI-
tureal chemistry--D esoEiption Of
Fertilizer Materials
Continued.


much the better term Tor our use Be-
sides the organic sources Of nitrogen
we also have what are known as tie
inorganic sources. | have explained
in previous letter fL1ly the meaning
Of these two terr-s. but lest you may
have forgotten, | viii stop a moment
to say that an organic substance may
be either vegetable or animal. thus
leaf, a seed. piece OF meat or Of skin
are organic substances. An inorganic
substance is the opposite of these
and is mineral in It's nature a piecs
Of rock on Of iron is inorganic. The
chief Inorganic srSgca Of nitrogen.
then. is nitrate Of soda. also commonly
called Chill saltpetre. 5altpetre be
cause 1t has many Of the properties of
real saltpotre. which is nitrate of pc.
ash and Chill because il is imported
from Chill in south America. ,
Nitrate Of potash or trne saltpetra
is ven, valuable fert ilizinz compound
yielding both nitrogen and potash 10
the plant but II is much too expensive
to buy in this form: it rs. therefore
better. or. rather cheaper TO buy nj
trate of soda and muriate Of potash
seBaruely. and then mix them 10.
gether. when we viii accomplish prar.
tically The same results from a forth.
izina standpoint. and for a smaller on.
Law Of money tbar If we bonobt tba
same elements in eorm Of nitrate Of
ootash. nitrate of soda e such nm
important salt for fertilizer purposes
that will 20 into some Titled etaiI
qbout IL
The entire SUNNY nj presaus comes
from the western coast OF Chill If ex.
tends IN a narrow s+rtp ~ lsod RIM.
ming north and south for afont oeo
miles. AT an average distance Of abont
IA miles from the ocean TIE country
where Il is found q deeart Il rove,
rains there and the whole roaton IL
bare of vegetation and destitute n,
water. The nitrate rock ,a can "a.
liche" pronounced ca-lea-ebavl ana
the hest quality has the FOLLOWING con,.
position.
Seldom nitrate IN nor conn eo5t,,o
chloride &c ar cent. sodium .ulnbate
per cent. nagncsirnl sulDbate Z ner
cent insomble matter IA oar cent o..
dunn iodate sodium nitrite maguesi.
am chioride' magnesium nitrate potas-
SUM ehioriae per cent making tho
Waoie
ne average quailty 81 'ealiche' con
tains from So TO ~ per cent OF sodium
nitrate. ana the poorest qnality worked
RANGES from ~ 70 8o per cent sodium
nitrate, me eaIiche occurs from
70 ~ rect Reiow the surface of the
SFonnd. ana 'he VEN or stratum va
F'as from 1901 ana = hat TO twelve
itel 10 '"'oNneSs'
ne process oI extracting and seps.
rating tne 'a'uanie nitrate OF soda
tFoih the rest oW the callehe IS done
Oy means 81 wafer IN ~hlch the NJ
trate o. SOFA aiso'Fes' ana from which
u Is cTyslaiiiAed. a description OF
| me process "ouId De tealons. sur
"ee II 70 say lo"t Costly plant Is re-
4uireo loi One purpose ana thSt the
WIN y 50 we" uone tiat the product
"heh hh'sHeu contains ABOUT 70 per
cent a''ta'e Oh SOFA men IS equiVa-
rent 70 1919 per cent q nitrogen, or
~ per cenS OF am4... An enor
nous and annually increasing amouni
is shipped every year. The amount
exported every year to Europe ana
America is about one million tons.
Method Of Use.
The material has a great number
of uses besides its use as a fertilizer
1t is in the manufacture of nitrate OF
potash. which is needed to make gun.
powder and fireworks; it is also used
TO make nitric acid. is an essential il
the manufacture of sulphuric acid. up
on which tae whole superphosphate o.
avoid phosphate industry depends, be
sides great many other manufactur.
ing processes. Its great Importance
as fertilizer depends upon its high
percentage Of nitrogen and its CON
plete sombility in water. thus being
Immediately available as plant foo /
the nitrogent in it being already in
the form Of a nitrate. the form in