nUdfd hy Mixtures of a more fuUen foyi An^ fometimes the Nd^ 
turalfurfaceisfofuffen,asto ftvallotp and devour the riehe^ Com* 
fofl'y hfore it rewards the indu^riotd^ Hu^h^ndman or Gardner : 
And feme do highly fretendto make by Nitri-fodinas perpc- 
tuas ^ to devife the Magnets, which (hall draw to our Ufe the Ali- 
mental Nitre of the Air. / [hall not flay to engage for or againfl 
either of thefe \ but by thofecuriousUtenfth we may feon examine, 
what may be done in good earnefl, and how far eiear Experiments 
mi anfwer to thofe alluring promifes . And though we fhould fail of 
the Particulars) yet thence we may chance to dive into fome Secrets 
^fvery ufeful Philofophy^ and fnd other Influences, than are either 
Ele^ricalj tfr in the common fen fe Magnetical, hut f regnant to 
Sfclofe the Caufes, and to remove the DefeSls of Fertility^ and to 
impart other no lef valuable vertnes. For there are more kinds of 
Fig^tables than are commonly fo cdVd, or fo confiderd as our Hi- 
flory (?/ Ofteo-colla, and the beautiful Stont'^\mi^ growing on the 
hard Rocks in Jamaica (to omit mmj other Inflances ) do teftifie. 
And we fee by Experience, that peculiar Earths, Fullers Earth, 
TmasforFeJfels, and feme kinds of Atones, and of Mineral Ores, 
have their real Increafe of Subflance in their times of Seafons,and 
f roper places, uany Noble Perfons are Lovers of Gardens^ and 
are willing to entertain Exoticks > and are provided of the Rocks, 
Grots, 4;;^CryptaV ; Pofjbly^ if they [hall have a dcftre to fear ch 
intOtheCaufes of thefe over-hot ferments ^and of the flow-pacd duller 
Edrth, they may happily find unexpected Treafures in their own pri- 
vate Inckfures. The Spade and Plck-ax will jhew the proximate 
Caufes, or at leafl fome of the Concomitants of every kind of Ferti- 
lity^ and of every kind of Barren^^efs ^ and the Scales will drfiinguilh 
real and [tthfiantial growth, and the feafons of it^ from deceiving 
Exfanfom: And then:, by Arches and Faults, by opening Springs, 
by heaps tf Stones, here of Lime- fl ones, thereof Marl-flones^ and in 
feverals of Pebbles, white and black F lints, Marcafites, Mineral Ores, 
I^lagmtSyand Bodies of the (Irongefl EleHricity^ where they may be 
hadf fo?nelaid as in their Natural Beds, ax d fome dislodged in an^ 
unkind poflurey we may Artificially frame fuch fubterraneom Fur- 
naces and Stov s,as may, by a calm Procejs, afford us fome of the 
Wonders of Divine Chymifi:ry. And thus we may have refrigera- 
ting Confcrvacories/(7r cooling Lenitives. Here we may feed moift- 
