And these new, young, multiply’d Roots are fuller of Lacteal Mouths than the older ones; which makes it no Wonder, that Plants should thrive faster by having some of their Roots broken off by the Hoe; for as Roots do not enter every Pore of the Earth, but miss great Part of the Pasture, which is left unexhausted, so when new Roots strike out from the broken Parts of the old, they meet with that Pasture, which their Predecessors miss’d, besides that new Pasture which the Hoe raises for them; and those Roots which the Hoe pulls out without breaking, and covers again, are turn’d into a fresh Pasture; some broken, and some unbroken: All together invigorate the Plants. Besides, the Plants of sown Corn, being treble in Number to those of the drill’d, and of equal Strength and Bulk, whilst they are very young, must exhaust the Earth whilst it is open, thrice as much as the drill’d Plants do; and before the sown Plants grow large, the Pores of the Earth are shut against them, and against the Benefit of the Atmosphere; but for the drill’d, the Hoe gives constant Admission to that Benefit; and if the Hoe procures them (by dividing the Earth) Four Times the Pasture of the sown during their Lives, and the Roots devour but one half of that, then tho’ the ho’d Crop should be double to the sown, yet it might leave twice as much _Pabulum_ for a succeeding Crop. ’Tis impossible to bring these Calculations to Mathematical Rules; but this is certain in Practice, that a sown Crop, succeeding a large undung’d ho’d Crop, is much better than a sown Crop, that succeeds a small dung’d sown Crop. And I have the Experience of poor, worn out Heath-ground, that, having produc’d Four successive good ho’d Crops of Potatoes (the last still best), is become tolerable good Ground. In a very poor Field were planted Potatoes, and, in the very worst Part of it, several Lands had them in Squares a Yard asunder; these were plowed four ways at different times: Some other Lands adjoining to them, of the very same Ground, were very well dung’d and till’d; but the Potatoes came irregularly, in some Places thicker, and in others thinner: These were not ho’d, and yet, at first coming up, looked blacker and stronger than those in Squares not dung’d, either that Year, or ever, that I know of; yet these Lands brought a good Crop of the largest Potatoes, and very few small ones amongst them; but in the dung’d Lands, for Want of Hoeing, the Potatoes were not worth the taking up; which proves, that in those Plants that are planted so as to leave Spaces wide enough for Repetitions of Hoeing, that Instrument can raise more Nourishment to them, than a good Coat of Dung with common Tillage.