Agricola, Georgius, De re metallica, 1912/1950

List of thumbnails

< >
101
101
102
102
103
103
104
104
105
105
106
106
107
107
108
108
109
109
110
110
< >
page |< < of 679 > >|
1
In the next place, venae profundae differ not a little in the manner in
which they intersect, since one may cross through a second transversely, or
one may cross another one obliquely as if cutting it in two.
If a vein which cuts through another principal one obliquely be the
harder of the two, it penetrates right through it, just as a wedge of beech or
iron can be driven through soft wood by means of a tool.
If it be softer, the
principal vein either drags the soft one with it for a distance of three feet, or
perhaps one, two, three, or several fathoms, or else throws it forward along
the principal vein; but this latter happens very rarely.
But that the vein
which cuts the principal one is the same vein on both sides, is shown by its
having the same character in its foot walls and hanging walls.
30[Figure 30]
A—PRINCIPAL VEIN. B—VEIN WHICH CUTS A OBLIQUELY. C—PART CARRIED AWAY.
D—THAT PART WHICH HAS BEEN CARRIED FORWARD.
Sometimes venae profundae join one with another, and from two or
more outcropping veins4, one is formed; or from two which do not outcrop
one is made, if they are not far distant from each other, and the one dips
into the other, or if each dips toward the other, and they thus join when they
have descended in depth.
In exactly the same way, out of three or more
veins, one may be formed in depth.

Text layer

  • Dictionary
  • Places

Text normalization

  • Original

Search


  • Exact
  • All forms
  • Fulltext index
  • Morphological index