In wide Intervals, we can raise a good Crop with less Labour, less Seed, no Dung, no Fallow, but not without a competent Quantity of Earth, which is the least expensive of any thing given to Corn; the Earth of a whole good Acre being but about the Tenth Part of the common Expence; and of indifferent Land, a Twentieth; and such I count that of Five Shillings and Six-pence _per_ Acre. The Crop enjoys all the Earth; for betwixt the last Hoeing, and the Harvest, there remains nothing but Space empty of Mould in the Middle of the Intervals. ’Tis an Objection, that great Part of those wide Intervals must be lost[137], because the Wheat-roots do not reach it; but as we generally turn the Mould towards the Row at the last Hoeings, there is no Part of it above Two Feet distant from even the middle Row, and Seventeen Inches from either of the outside Rows. [137] They do reach through all the Mould (as shall be proved by-and-by); and yet may leave sufficient Pasture behind; because it is impossible for them to come into Contact with all the Mould in One Year; no more than when Ten Horses are put into an Hundred Acres of good Pasture, their Mouths come into Contact with all the Grass to eat it in one Summer, though they will go all over it, as the Vine-roots go all over the Soil of a Vineyard without exhausting it all; because those Roots feed only such a bare competent Quantity of Plants, which do not overstock their Pasture. The Superficies of the fibrous Roots of a proper Number of Wheat-plants bear a very small Proportion to the Superficies of the fine Parts of the pulverized Earth they feed on in these Intervals; for one cubical Foot of this Earth may, as is shewn in _p._ 29. have many thousand Feet of internal Superficies: But this is in proportion to the Degree of its Pulveration: and that Degree may be such as is sufficient to maintain a competent Number of Wheat-plants, without over-exhausting the vegetable Pasture, but not sufficient to maintain those, and a great Stock of Weeds besides, without over-exhausting it. And this was plainly seen in a Field of Wheat drilled on _Six-feet_ Ridges, when the South Ends of some of the Ridges, and the North Ends of others, had their Partitions Hand hoed, and cleansed of Weeds, early in the Spring, the opposite Ends remaining full of a small _Species_ of Weeds, called _Crow-needles_, which so exhausted the whole Intervals of the weedy Part of the Ridges, that the next Year the whole Field being drilled again with Wheat exactly in the Middle of the last Intervals, the following Crop very plainly distinguished how far each Ridge had its Partitions made clean of those small Weeds in the Spring, from the other End where the Weeds remained till full-grown; the Crop of the former was twice as good as that of the latter, even where both were cleansed of Weeds the next _Spring_. This Crop standing only upon that Part of the Mould, which