2 3° Mifcellanea Curiofa. * 



After all which, that very Tra6r. of Land 

 may be brought to produce another Series of 

 the fame Vegetables ; but never till 'tis fupplied 

 with a new Fund of Matter, of like fort with 

 that it at firft contain'd. This Supply is made 

 fevera! ways : By the Grounds lying fallow for 

 fbme time, till the Rain has pour'd down a frefli 

 Stock upon it : Or, by the Tiller's Care in ma- 

 nuring of it. And for farther Evidence that 

 this Supply is in reality of like fort, we need on- 

 ly reflect a while upon thofe Manures that are 

 found by conftant Experience beft to promote 

 Vegetation, and the Fruirfulnefs of the Earth. 

 Thefe are chiefly either parts of Vegetables, or 

 of Animals ; which indeed either derive their 

 own Nourifhment immediately from Vegetable 

 Bodies, or from other Animals that do lb. In 

 particular, the Blood, Urine, and Excrements of 

 Animals ; Shavings of Horns, and of Hoofs ; 

 Hair, Wool, Feathers ; calcin'd Shells ; Lees of 

 Wine, and of Beer ; Afhe? of ali lorts of Ve- 

 getable Bodies ; Leaves, Srraw, Roots, and Stub- 

 ble, turn'd into the Earth by Plowing* or other- 

 wife, to rot and diflblve there : Thefe, 1 (ay, 

 are our belt Manures ; and, being Vegetable 

 Subftances, when refunded back again into- the 

 Earth, ferve for the Formation of other like 

 Bodies. 



Not wholly to confine our Thoughts to the 

 Fields, let us look a while into our Gardens ; 

 where we mall meet with ftill further Confir- 

 mations of the fame thing.' The Trees, Shrubs, 

 and Herbs cultivated in thefe, after they have 

 continued in one Station, till they have deri- 

 ved thence the greater part of the Matter fit 

 for their Augment, will decay and degenerate, 



unlefs 



