136 
Liquid Manure. 
A portion of the clear liquid was evaporated to dryness, and in 
the residue the amount of fixed ammonia and nitrogen deter- 
mined by combustion with soda-lime. 
Another portion of the filtered liquid was supersaturated with 
hydrochloric acid, and thereby the volatile carbonate of ammonia 
and the humates and ulmates of ammonia, which lose ammonia 
on heating, were converted into chloride of ammonia. Evapo- 
rated to dryness on the water-bath, the acid liquid left a residue 
which, on burning with soda-lime, gave the total amount of 
nitrogen in the liquid. By deducting the amount of nitrogen 
found in the residue left on evaporation without acid from the 
total quantity of nitrogen, and calculating the remainder as 
ammonia, the proportion of ammonia existing as carbonate and 
as humate or ulmate of ammonia was determined. 
A third portion of the filtered liquid was evaporated to dry- 
ness, the residue weighed, and afterwards burned in a platinum 
capsule at a moderate heat. The remaining ash was subsequently 
carefully analysed, according to well-known processes that need 
not be described here in detail. 
This ash tvas found to consist, in 100 parts, of — 
Soluble silica '90 
Oxide of iron 3-24 
Lime 28-52 
Magnesia 1"49 
Potash 4-33 
Chloride of sodium 42'36 
Phosphoric acid - '77 
Sulphuric acid 3"67 
Carbonic acid and loss 14'72 
100-00 
The solid matter in the liquid manure, left in contact with soil 
for 24 hours, had the following composition : — 
Organic matter 30-6G 
Containing 1-62 of nitrogen. 
Inorganic matter 69-34 
Consisting of : — 
Soluble silica '62 
Oxide of iron 2-24 
Lime 19-77 
y Magnesia 1-03 
Potash 3 00 
Chloride of Sodium 29-37 
Phosphoric acid -53 
Sulphuric acid 2-54 
Carbonic acid and loss 10-24 
lOO-OO 
According to these data, an imperial gallon of liquid manure, 
mixed in the proportion of seven parts (by weight) to two parts 
(by weight) of soil, and filtered off after 24 hours, had the 
following composition : — 
