farface of the ground, and employed to colled the Dew ? And 
whether the Rain that falls there^and may be fuppos'd to come 
thither from elfewliere^ will difcolour (uch Clothes, or aflford 
any refidenceof a Mineral Nature ? 
16. Whether the place be more thanor<3inary fubjedt to 
Thunder and Lightning,and tofuddenStormsorEarthquakes, 
as hkewife 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 y 
fignify, and may be fuppofed to be produced by ? 
18. Whether the Vtrgula Divinatoria be uled to find out the 
Veins of propofed Mines ; andjif it be, with what fuccefs ? 
19. What other Signs above ground afford probability of ^ 
Mines 3 or Diredion for following a Vein over Hills, Valleys^^ 
Lakes, Rivers, (ic. 
The fecondfort of belonging to thefe ^miesy^rc luck 
as follow. 
20. Whether there be any Clayes, Marles^or other Mineral ^ 
Earths, yellow or liquid matters, that ufually give notice of 
the Ore ? and if there be more than one , how and at what 
depths they are wont to lye refpec^iively > Of what thicknefs 
and confiftence they are $ and in what order the Diggers meet 
with them? 
2U Whether there be any Stones or Marchafites to be found j 
neer, or not very^ far from the furface of the ground, by which 
one may have ground to exped a Mine ? As is often obferved 
in the Tin-mines oi Cornwall^ over which fuch kind of Scones ^ 
are divers times found lying above grounds 
a 2* Whether all Stones of that kind do equally fignify that 
Mine ? Andjifnot^how the fignificant Stones are to be knowng 
as by Colour, I^ignefsj Shape, Weight, Depth under ground^ 
25 J Whether there be any Earths ol peculiar kinds ^ as to 
Colour^ Confifteneej ^c, that indicate a Mine beneath or near 
them i and if there be, what they are^ and what is their eonfe- 
cutiouj^ if they have any f 
24. Whether Heat or Damps giy^^ any affurance or a pro- 
bability of finding a Mine ? 
35^ Whether 
