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ought never to be confounded with common roots, which serve to nourish these tubers, bulbs,&c., in common with other parts of the plant.

Earth, as applied to the surface of the globe, one or more of the earths, as lime, clay, sand,&c., in a friable or divided state, and either alone or mixed; but without the addition of much organic matter.

Soil, earth, either of one, or of several sorts, mixed with decomposed organic matters.

Mould, organic matter in a finely divided and decomposed state, with a little earth mixed, as vegetable mould, leaf mould, peat mould,&c.

Loam, any soil in which clay and organic matter exist in considerable proportions, and so as to render it neither very adhesive or hard, or soft and loose.

Land; ground, earthy surface in opposition to water or rocks; the term ground is generally applied to a comparatively limited extent of surface, as garden grounds, hop grounds,&c. in opposition to arable lands, wood lands,&c.