cm 
f6, Whetherthe Vein be inclofed every way in Its CoatS'Or 
whether it only lie between them ? 
57. Whether the Vein be every way of an uniform breadth^ 
and thicknefs ; and^ it bcj what thefe Dimenfions are 5 and , 
rf not, in what places it varieSj and in what meafures f ( The 
like Queftions are to be made concerning the Sparre ^ Caulk^^ 
and other Tegnments or mixtures of the Ore r^) 
58. Whether the Vein be un-interrupted^ or in fome places 
broken off , and whether it be abruptly or not; and whether 
it be by Valesj Brooks, GulletSj 
59. How wide the Interruptions are ; what figns whereby 
to find the Vein again ; whether the ulterior part or divifioa 
of die Vein be of the fame Nature , and hold on in the fame 
Courfe^as to its tendency upwards or downwards, or Horizon- 
tally, Northward, Southward, (3c. with the Vein ^ from whicb 
k is cutoff? 
60. Whether^ in cafe the laft end of the Vein be found ^ it 
terminate abruptly^ or elfe end in fome peculiar kind af Rock 
or Earthj which does as it were 3 clofe or Seal it up , without 
leaving any crack or cranny^or otherwife f And whether the 
terminating parrof the Vein tend upwards^downwards^or nei- 
rher ? And whether in the places where the Vein is interrupted 
there be any peculiar Stone or Earth5 that does^ as it were,lea! 
lip the Extremity of it ? 
6u Whether it be obferved, that the Ore in Traft of time 
ir.ay be brought to afford any Silver or Gold^which it doth not 
afford, or more than it would afford , if it were not fo ripe ? 
And whether it have been found^that the Metalline part of the 
Vein grows fo, that fome part of the Mine will afford Ore or 
Metal in traft of timej that did not fo before ? and whether to 
this Maturation of the Mine^ the being expofed to the free Air 
be neceflary i or, whether at ieafl: it conduce to the Accelerati* 
on of ir ; or otherwife > 
67. Whether all the Ore, contained in the Mine, be of the 
fclf-fame natnre and goodnefs v and if not , what are the dif- 
fering kinds j and how to be difcriminated and eflimated/ 
What is the finenefs and goodnefs of the Ore,by which 
fiic Miiie is wont to be (^ftimated f And what are the marks and 
charaders, 
