Purchased Food, and of its Residue as Manw-e. 
225 
Composition of Farm-yard Manure (composed of Horse-, Cow-, and 
Pig-Dung). 
Fresh Rotten 
Dung. nung. 
Wilter 6G17 .. .. .. 75-42 
♦Soluble organic matter 2 '48 .... .. 3*71 
Soluble inorganic matter : — 
Soluble siiica -237 "254 
Phosphate of lime .... -299 -382 
Lime -060 -117 
Magnesia -Oil '047 
Potash -573 -446 
Soda 051 -023 
Chloride of Sodium .... -030 -037 
Sulphuric acid "055 .. .... "058 
Carbonic acid and loss .. '218 .. .... '106 
1-54 .... 1-47 
flnsoluble organic matter 25 ■ 76 .... . . 1 2 • 82 
Insoluble inorganic matter : — 
Soluble silica -967 1-424 
Insoluble siliceous matter .. '561 .. .... l-OlO 
Oxide of iron and alumina,! . ggg . g^y 
with phosphate 
Containing phosphoric acid ( • 178) . . .... ( • 274) 
Equal to phosphate of lime (-386) .. .... ('573) 
Lime 1-120 1-067 
Magnesia -143 -091 
Potash -099 .. .... '045 
Soda -019 -038 
Sulphuric acid -OGl -063 
Carbonic acid and loss .. -484 .. .... 1-295 
4-05 .. .. 6-58 
100 00 .... 100-00 
The manure contains ammonial 
in a free state / 
The manure contains ammonia"! 
in form of salts / 
* Containing nitrogen .. -349 .... -297 
Equal to ammonia . . .. -181 .... '360 
t Containing nitrogen .. '494 .... '309 
Equal to ammonia . . . . - 599 .... • 375 
Total nitrogen .... -643 .... -606 
Equal to ammonia . . .. -780 .... -735 
-034 .. .. -046 
-0S8 .... -057 
It will be observed that both fresh and rotten farmjard- 
manure contain but very small proportions of either free or 
combined ammonia. Nearly the whole of the nitrogen in the 
dung exists as nitrogenous organic matter. In fresh dung the 
greater portion of the nitrogenous substances are insoluble in 
water, and in the rotten dung about one-half of the nitrogenous 
matters are soluble, and the other half insoluble in water. 
As the manure analysed was produced by well-fed animals, 
liberally supplied with cake and corn, in addition to hay and 
chaff, we may presume that manure obtained by the consump- 
tion of all kinds of purchased food, in addition to ordinary 
VOL. XII.— S. S. Q 
