274 Of Differences between the Ch. XVII. 



titions at Six Inches (d\ the Intervals Five Feet •, 

 Five Parts in Six of the whole Field may be pulve- 

 riz'd every Year, and at proper times all round the 

 Year. 



The Partions being one Sixth-part for the Crop to 

 Hand on, and to be nourifhcd in the Winter, one 

 other Sixth-part being well pulveriz'd, may be jfuffi- 

 cient to nourifh it from thence till Harveft (e) \ the 

 Remainder, being Two-thirds of the Whole, may be 

 kept unexhaufted, the One-third for one Year, and 

 the other Third of it Two Years •, all kept open for 

 the Reception of the Benefits defcending from above, 

 during ib long a time ; whilfl the lowed Land is fhut 

 againft them every Summer, except the little time in 

 which it is fallow'd, once in Three Years, and a little, 

 perhaps, whilft they plow it for Barley in the Winter, 

 which is a Seafon feldom proper for pulverizing the 

 Ground. 



Their Land mud have been exhaufted as well by 

 thofe fupernumerary Plants of Wheat, while they 

 lived, as by thofe that remain for the Crop, and by 

 the Weeds. Our Land muft be much lefs exhaufted, 

 when it has never above one Third-part of the Wheat- 

 plants to nourifh that they have, and generally no 

 Weeds -, Co that our ho'd Land having much more 

 vegetable Pafture made, and continually renewed, 

 to ib much a lefs Stock of Plants (f), muft needs be 



(d) But when it is drilled upon Ridges, the Proportion is lefs, 

 by how much the Partitions, being thicker in Mould, contain 

 more than a Sixth-part of' the whole Six Feet of Earth, and the 

 Proportion of unexhaufted Earth will be alter'd likewife ; and I 

 only mention thefe Distances to avoid Fractions. 



(e) This may be done, tho" 1 the Roots of a competent Number 

 of Plants run through the Whole, in the manner herein befora 

 explained. 



if) Therefore, whenever a Soil receives more Supplies of fine 

 Earth from the Atmofphere, than is exhaufted by all the Plants 

 that grow in the Soil, it becomes richer; but if the contrary, then 

 it becomes poorer. 



left, 



