ertilizers, varying according to the food, the age of the animals, etc.

STABLE MANURE.

By stable manure we mean, usually, that of the horse, and that of
horned cattle. The case described in chap. 2 (of this section), was one
where the animal was not increasing in any of its parts, but returned,
in the form of manure, and otherwise, the equivalent of every thing
eaten. This case is one of the most simple kind, and is subject to many
modifications.

[Is the manure of full-grown animals of the same quality as
that of other animals?

Why does that of the growing animal differ?

Why does not the formation of _fat_ reduce the quality of manure?

What does _milk_ remove from the food?]

The _growing_ animal is increasing in size, and as he derives his
increase from his food, he does not return in the form of manure as much
as he eats. If his bones are growing, he is taking from his food
phosphate of lime and nitrogenous matter; consequently, the manure will
be poorer in these ingredients. The same may be said of the formation of
the muscles, in relation to nitrogen.

The _fatting_ animal, if full grown, makes manure which is as good as
that from animals that are not increasing in size, because the fat is
taken from those parts of the food which is obtained by plants from the
atmosphere, and from nature, (_i. e._ from the 1st class of proximates).
Fat contains no nitrogen, and, consequently, does not lessen the amount
of this ingredient in the manure.

_Milch Cows_ turn a part of their food to the formation of milk, and
consequently, they produce manure of reduced value.

[How do the solid and liquid manure of the horse and ox
compare?

What occasions these differences?]

The solid manure of the horse is better than that of the ox, while the
liquid manure of the ox is comparatively better than that of the horse.
The cause of this is that the horse has poorer digestive organs than the
ox, and consequently passes more of the valuable parts of his food, in
an undigested form, as dung, while the ox, from chewing the cud and
having more perfect organs, turns more of his food into urine than the
horse.

RECAPITULATION.

FULL GROWN animals not }
producing milk, and full } make the best manure.
grown animals fattening }

GROWING ANIMALS reduce the value of their manure, taking portions of
their food to form their bodies.

MILCH COWS reduce the value of their manure by changing a part of their
food