Mud, the slime or miry earth-usually found at the bottom of ponds, and stagnant waters. It also signifies the dust or dirt of streets and roads, rendered fluid by rain.

Mud is chiefly useful as a manure for loamy soils; Though it may also be applied with advantage to any other land. The best kind is that taken from ponds which have received the draining of farm-yards. The sweepings of London streets have likewise been found of considerable service, when mixed with a little horse-dung, in order to ferment, before it is carried on the land. Thus prepared, it has been spread in the proportion of ten or twelve loads per acre, and been productive of the most beneficial effects.—See Manure.