. Whether there be any Stones or _Marchasites_ to be found neer, or not
very far from the surface of the ground, by which one may have ground to
expect a Mine? As is often observed in the Tin-Mines of _Cornwall_, over
which such kind of Stones are divers times found lying above ground?

22. Whether all Stones of that kind do equally signify that Mine? And, if
not, how the significant Stones are to be known, as by Colour, Bigness,
Shape, Weight, Depth under ground, &c.

23. Whether there be any Earths of peculiar kinds, as to Colour,
Consistence, &c. that indicate a Mine beneath or near them; and, if there
be, what they are, and what is their consecution, if they have any?

24. Whether Heat or Damps give any assurance or a probability of finding a
Mine? {334}

25. Whether Water of any kind, met with in Digging, especially at this or
that depth, do betoken a Mine?

26. Whether there be any Signs of the neerness of the Mine, and what they
are?

27. Whether there be any Signs of ones having miss'd the Mine, either by
being past above, or beneath, or having left it on either hand; and what
they are?

28. Whether there be any Signs not only of the distinct and determinate
kind of Metals or Minerals; but of the Plenty and Goodness of the Vein; and
what they are?

29. Whether there be any Signs of the depth of the Vein beneath the surface
of the Earth; and what they are?

30. Whether there be any proper or peculiar Signs, that show it to be
hopeless, or at least unlikely, to find a Vein in the place where it is
digg'd for; and what those are?

_About the fourth Title._

31. What is the depth of the Shaft or Groove (which though named in the
_singular_ Number; the Questions about it are _generally_ applicable) till
you come at the Vein or Ore?

32. Whether the Vein run or lye Horizontal, or dippe? And if it dippe, what
_inclination_ it hath, how deep the lowest part lies; and consequently how
much deeper than the uppermost? As also, what it's Flexures, if it have
any, are? And whether it runs directly _North_ or _South_, _East_ or
_West_; or seem rather to have a Casual tendency, than any determinate one
by Nature? and how far it reaches in all?

33. What is the Wideness of the Groove at the Top, and elsewhere? Whether
the Groove be perpendicular or crooked; and if crooked, after what manner,
and with what distance it winds?

34. How the Groove is supported? What are the kinds, length, bigness, and
way of placi