To make tryal of the growth of Plants, in all kinds of simple Soils; either Earthy or Mineral, as Clay, Marl, Oker, Fullers Earth, Bole Armeniac, Vitriol, Allum, &c. or Vegetable, as Rotten Wood, Brans, Starch, or Flower, &c. or Animal, as Dungs, pounded Flesh, dried and powdered Blood, and the like; that it may appear, how far any of these may contribute to the growth of a Plant; or to one, above another