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furface of the ground, and employed to collet the Dew ? And 
whether the Rain that falls there 5 and may be fuppofed to come 
thither from elfewhere , will difeolour fuch Clothes , or afford 
any refidence of a Mineral Nature ? 
1 6. Whether the Place be more than ordinarily lubjeft to 
Thunder and Lightning, and to fudden Storms or Earthquakes 3 
as like wife to Nofturnal Lights and fiery Meteors, 
17. Whether Mifts ufe to rife from Grounds ftored with Mi- 
nerals? What is obfervable in them , and what Minerals they 
fignify , and may be fuppofed to be produced by ? 
18. Whether the Virgula Divinatoria be ufed to find out the 
Veins of propofed Mines 3 and , if it be, with what fuccefs? 
19. What other Signs above ground afford probability of 
Mines p or Direction for following a Vein over Hills , Valleys 9 
Lakes, Rivers, &c . 
The ftcond fort of Signs belonging to thefe Quarks^ are fuch ' 
as follow. 
20. Whether there be any Clayes, Maries, or other Mineral 
Earths, yellow or liquid matters , that ufu ally give notice of 
the Gre ? And if there be more than one , how and at what 
depths they are wont to lye refpe&ively ?. Of what thicknefs- 
arid confiftence they ares and in what Order the Diggers meet 
with them ? 
2 1. Whether there beany Stones or Marchajhes to be found 
neer, or not very far from the furface of the ground,, by which 
one may have ground to expect a Mine ? As is often obferved io 
the Tin-Mines of Cornwall 9 over which fuch kind of Stones 
are divers times found lying above ground ? 
. 22. Whether all Stones of that kind do equally fignify that 
Mine ? And, if not, how the fignificant Stones are to be known, 
as by Colour , Bignefs , Shape, Weight , Depth under 
ground, &c.. 
23. Whether there be any Earths of peculiar kinds , as to 
Colour , Confiftence, that indicate a Mine beneath or near 
them 3 and , if there be, what they are, and what is their con- 
fecution , if they have any ? 
* . 24. Whether Heat or Damps give any affurancc or a proba- 
■ bility of finding a Mine? 
25. Whether 
