Yet it seems, that much of the Earth, contain’d in the clearest Water, is there in too large Parts to enter a Root; since we see, that in a short time the Root’s Superficies will, in the purest Water, be cover’d with Earth, which is then form’d into a terrene Pasture, which may nourish Roots; but very few Plants will live long in so thin a Pasture, as any Water affords them. I cannot find one as yet that has liv’d a Year, without some Earth have been added to it. And all Aquatics, that I know, have their Roots in the Earth, tho’ cover’d with Water. The Pores, Cavities, or Interstices of the Earth, being of two Sorts, _viz._ _Natural_ and _Artificial_; the one affords the Natural, the other the Artificial Pasture of Plants. The natural Pasture alone will suffice, to furnish a Country with Vegetables, for the Maintenance of a few Inhabitants; but if Agriculture were taken out of the World, ’tis much to be fear’d, that those of all populous Countries, especially towards the Confines of the frigid Zones (for there the Trees often fail of producing Fruit), would be oblig’d to turn _Anthropophagi_, as in many uncultivated Regions they do, very probably for that Reason. The artificial Pasture of Plants is that inner Superficies which is made from dividing the Soil by Art. This does, on all Parts of the Globe, where used, maintain many more People than the natural Pasture[16]; and in the colder Climates, I believe, it will not be extravagant to say, ten times as many: Or that, in Case Agriculture were a little improved (as I hope to shew is not difficult to be done), it might maintain twice as many more yet, or the same Number, better.