Port Tobacco times, and Charles County advertiser. (Port Tobacco, Md.) 1845-1898, 1854-09-21
"Salss, Potash aud Soda, Sulphuric Acid
&C., $685." and a, another:
"Po,ash and Soda.''

&C.. $685." and a, another
"Po.ash and Soda"
Now if Potash and Soda make per cent.
by themselves, then, Of course, Salts Of Pot
ash and Soda must make al least per cent.
Deduct these 5 per cent. from the whole a.
mount allowed for Salts, Potash and Sods,
Sui lphuric Acid and &C., which is 5.55 as a
bove mentioned, and we have half of one
per cent. for Sulphuric Acid end &C., and
therefore in favorable case one fourth of
one per cent. of "S1." and one fourth OF one
per cent. Of "Sulphurc Acid" This amount
of Sulphuric Acid is so small as must be
considered an incidental impurity, and not
as the agent which had transformed COM
mon Phosphate Of Lime into Soluble BIZ
Phosphate or Superphosphate.
The analysis mentions 1S per cent. Of
Soluble Phosphate Acid, this csnno. be attfi-
bu'ed to the action of sulphuric Acid on
the original Phosphates. Nobody need
however, be as,onished at its presence who
knows the aclisn Of Ammoniacal Salts on
Phospha,es. I Ammoniacal Salts, especially
Sulphate of ammonia, dissolve pretty readi-
| ly Phosphate Of Lime and to this fact the
great effect of Peruvian Guano must to
some extent be attributed. Peruvian Guano,
as we know, contains Phosphate of Lime
besides Ammonia; if this article is mixed
with Sulphate Of Lime Plaster Of Paris, or
applied to soil which contains originally
Plaster of Paris, SuIpha,e Of Ammonia is
formed, which acts as Solvent to The Phos-
phate of Lime. We even know by expert
ments, made with mixtures ofPeruvan Gu
ano and Mexican { Pure Phosphate Of Lime)
that the Sulphale Of Ammonia which is form
ed from 100 lbs. of Peruvian Guano makes
available not only the Phosphate Of Lime
which these 100 lbs. contain, but that i, acts
also on additional qualities Of Phosphate Of
Lime, which the Mexican Guano contained,
and that for this reason the application Of a
mixture OF Peruvian Guano and Mexican is
in all cases far more economical and ration
al than the application Of Peruvian Guano
alone, provided ,hallh soil is de6cien! in
Phosphoric Acid.
DR.. Stewart shows Ammoniacal Salts 10
be present in c. B. DeBurg's Super Phos-
phale Of Lime, and the presence Of l.S per
cent. Of Soluble Phosphoric Acid mustlhere-
fore be The consequence Of the action Of
these Ammonical Salts on Phospha,es the
absence Of Sulphuric Acid or any other slron-
ger acid Than Phosphoric excludes every
other reason for its presence. Blu, if hisis
the case (and no other case is possible from
The analysis) We will at once perceive
great mistake as TO The valuation Of the ar :
ticle. The value Of The Ammoniacal Salts
con,ained in the article is frs! estimated,
then the value of lis Phosphates, and finally
the value OF the Soluble Phosphoric
Acid, which estimated to be equivalent to
five times the proportion of Bone Phosphate
of Lime that represents. By these means
the analyst estimates first the agents which
are Ammolaca Salts and Phosphates, and
secondly their reciprocal effect which pro-
duced Soluble Phosphoric Acid. Such
valuation is however totally wrong and LA
able to mislead Farmers and Purchasers Of
this article. A Hotel-keeper, who would
charge for the Beef and for roasting il, and
finally for the resulting Roas, Beef would
act on the same principle as that BY which
the IN oney value of this article is estimated.
If make ''.he mos, liberal allowance"
as Dr. S. did, in estimating The money value
of this "fer,iIizer," allowing $25 for 1000
lbs. Of raw Bones and $50 for 224O lbs. Of
Peruvian Guano, come to the following
result:
10000 lbs. of raw Bones, containing 23.-
81 per cent. of Phosphoric Acid are worth
$25, then ID. Of Phosphoric Acid is worth
3 cents.
Peruvian Guano containing IA per cent.
OF Phosphate Acid and l6 per cent. OF Am
monia is therefore worth,
For lis Phosphate Acid, SIG 62
And for its Ammonia, 33 38
Total, so 90
And therefore l ID. Of Ammonia is worth
So 81 cents.
The above Super Phosphate Of Lime con-
tains in 1000 lbs, as per DR.. Stewards an
alysis, 373 lbs. of Phosphoric Acid, which
81, s 2 CENTS are worth. $19 76
And 80 lbs. of Ammonia, a, 9 81 Cts, $9 39
Total. value % IA
This is the real money value Of the srt-
Gle as calculated from Dr.. SIS analysis, and
if we estimate Ptruvian Guano al fifty dollars
the short Ton, (;t present price) then at
most the article is not worth more lhan
thirty lone or ,hir,y-.wo dollars per ton,
price very far below al that which it is sold.
ou can buy The materials Of this manure
and spply them to your soil at a far less
sum than The price for which this manureis is
sold here.
The value Of all this class of manures
should be reckoned by this rule: Estimate
the value of The several constituents in the
manure, and then The cost of the labor of
mixing them. (if mixing is necessary before
using ,hem) the sum is the real value Of the
manure. This rule holds good in all man.
ufactuted articles, and why no. in manure.
| do no, deny but that this manure may
produce under any Certain conditions good