, 1873-05-21

pounds carbon, 81 pounds hydrogen, AGA
pounds nitrogen, 263 pounds oxygen so
that near one half is nitrogen, which, if
not collected, soon forms carbonate Of
ammonia, and evaporates.
In every 100 pounds of urine there are
456 pounds heterogeneous matter in the pro-
portion Of 100 to 464, so that in 100
pounds of urine we have about q pounds
of nitrogen.
In 700 pounds of solid feces we have
4 10 pounds nitrogen so that in the year
ly product of a grown person (547 pounds
fluid and 1873 pounds solid feces) We have
in the fluid 123 pounds nitrogen, in the
solid y pounds nitrogen, or 20 pounds
nitrogen per annum, or in 100 pounds of
the mixed feces we have q pounds nitro
gen. Now according to Boussingault and
others, the mixed feces of the horse contain
of nitrogen 0.65 per cent, or 9E5 pound
neat cattle, 0 36, or ] pound; pig, 0.6l, or
'5 pounds sheep, OBJ or 9lo pound,
so that, in respect to nitrogen, the
teces Of man produced in one year are
equal to 27 cWt. s pounds horse-dung /;
so cWt. cattle-dung 20 cwt. 60 pounds
Pig-dung 10 cWt. SO pounds 8heep-dung;
or 100 pounds mixed human feces are
equal to All pounds horse-dung; 1881
pounds OF cattIe-dung 445 Is pounds pig
dung; 29S3 pounds shecp-dung.
AS compared the with best guano, which
contains - per cent. of nitrogen, the year
ly product of a grown person would equal
II cWt. of the latter as regards nitrogen, or
100 pounds of mixed feces would equal
343 pounds of best guano.
AS the albaIies and p~hosphates are Of
the greatest Importance when testing the
value OF manureS, it it necessary in com
pairing the human feces with those of
animals to- find out the relative proportions
OF these substances.
Experiments show that the mixed feces
OF a grown person in one year are equal as
regards the aIkalies to 7 CWt. horse-dung
Z cWt is pounds coW-dung Z cwt. 27
pounds plg-dung; 3 cWt. 70 pounds sheep
dung or 100 pounds human fcces equal to
100 pounds horse-dung III pounds cow
dung; ll2 pounds pig-dung; 81 pounds
sheep-dung.
In respect to phosphoric acid, the years
product OF human feces equals - cwt. Al
pounds horse-dung 90 cwt. 81 pounds
coW-dung - cWt. AZ pounds pig-dung
s cwt. 90 pounds sheep-dung; or 100
pounds human feces equal 2O8 pounds
horSe-dung 4I5 pounds coW-dung; 208
pounds pig-dung 1874 pounds sheep-dung.
In comparing human feces with those of
animals, it would be well to take into con-
sideration the fact that quantities of straw,
&C., are mixed with the latter. A COM
p%arison Of human feces with s~table-manure
will show that 100 pounds of the former
are equal in respect to nitrogen to $50
pounds horse-manure 1873 pounds cow
manure $50 pounds pig-manure 400
pounds sheep-manure. In respect to
alkalies, to 1875 pounds horse-manure ; $40
pounds cOw-mauure; 142 pounds pig
manure; IS pounds s|heep-manure In re-
spect to phosporic acid, to 32Opounds horse
manure; 500 pounds cow-manure; $50
pounds pig-mauure $50 pounds sheep
manure
AS the best guano contains about - per
cent. alkali salts and an equal quantity Of
phosphoric acid, 100 pounds mixed feces
will equal s pounds guano in respect to
alkalies and So pounds in respect to phos-
phoric acid.
Surely further evidence is not needed to
show that if there is one question of nation
al economy which is paramount to all
others, it is that which relates to the saw
ing of human manure and its use In agri-