Stock Photo: Prospecting for metals using divining rods (A,A) and trenching (B). Divining rods were used in exactly the same manner for water divining (dowsing). From De re metallica, by Agricola, pseudonym of Georg Bauer (Basle, 1556). Woodcut

Stock Photo: 1746-1906 Prospecting for metals using divining rods (A,A) and trenching (B). Divining rods were used in exactly the same manner for water divining (dowsing).   From De re metallica, by Agricola, pseudonym of Georg Bauer (Basle, 1556).  Woodcut