MANURE. 
* 18 
to the earth form mould, which, thus composed of 
carbon, salts, and water, is natural manure. 
7th. Mould consists of two kinds, one of which 
may be, and the other cannot be dissolved by water. 
Alkalies put it into a state to be dissolved, and in pro¬ 
portion as it is dissolved, it becomes valuable as a 
manure. 
8th. If then manure contains only water, carbon, 
and salts, any substance which affords similar pro¬ 
ducts may be substituted for it. Hence we come to 
a' division of manures into natural and artificial. 
The consideration of these is the carting out and 
spreading of our compost. And we shall first con¬ 
sider in detail the natural manures. 
That is, those which are furnished us by the dung 
and urine of animals, and the manure or mould formed 
by the decay of animal bodies or plants. These are 
truly the natural manures, consisting of water, mould, 
and salts. This is all that is found in cattle dung. 
This being premised, we may divide manures, reader, 
for your more convenient consideration, not by their 
origin, but by their composition. We may divide 
manures into these three classes: First, those consist¬ 
ing of vegetable or animal matter, called mould; Se¬ 
condly, those consisting chiefly of salts; Thirdly, 
those consisting of a mixture of these two classes. 
And, beginning with the last first, we will now proceed 
to their consideration. 
SECTION III. 
CARTING OUT AND SPREADING. 
The general chemical information set forth in the 
preceding sections will be of no service to you, reader, 
if it conducts you not, beyond the result arrived at in 
